W.S. Winston Ho Laboratory

The Ho Lab specializes in membranes and separations including polymer and liquid membranes, carbon dioxide capture, hydrogen purification, fuel cell fuel-processing and membranes, facilitated transport, supported liquid membranes, reverse osmosis, gas treating, and pervaporation.

Professor Ho is an expert in molecularly-based separations including definition of approaches, design of practical systems, scale-up and commercialization.

Ho speaking with two students next to equipment — Professor Ho with researchers working on his membrane-fabrication equipment.

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Professor Ho, a member of the National Academy of Engineering, is a global leader in molecularly-based separations including definition of approaches, design of practical systems, scale-up and commercialization, and in the development of innovative membranes for molecular and chemical separations, including CO₂ separation and capture, hydrogen purification, water desalination and purification, antibiotic recovery, and wastewater metal recovery.

He specializes in membranes and separations, including polymer and liquid membranes, carbon dioxide capture, hydrogen purification, fuel cell fuel-processing and membranes, facilitated transport, supported liquid membranes, reverse osmosis, gas treating, and pervaporation. These membrane technologies could increase energy efficiency and provide zero-carbon electricity generation.

Ho's signature achievement is in the area of membrane development for carbon capture:

Ho was the first to propose, synthesize, and experimentally demonstrate novel CO₂-selective membranes capable of possessing high CO₂ permeability and CO₂/H₂ selectivity (>80) at relatively high temperatures (100 – 180^oC) for H₂ purification and CO₂ capture. The membranes have been synthesized by incorporating amino groups in polymer networks. Also the first to elucidate the unusual phenomenon of both permeability and selectivity increases with temperature. He and his students removed H₂S to <10 ppb in syntheses gas. They were also the first to obtain <10 ppm CO in the H₂ product with a water-gas-shift (WGS) membrane reactor using the membrane to drive the WGS reaction to the product side via CO₂removal. The data were in good agreement with their model prediction. This was the first CO₂-selective membrane WGS reactor. The membrane is being scaled up for commercialization, including its use in H₂ purification for fuel cells.

Developed the novel concept of incorporating hydrophilic groups chemically into membrane structure to provide an additional pathway for water transport and to overcome the low hydrophilicity/flux issue inherent in interfacially polymerized membranes. This work has resulted in >100% increase in water flux vs. the industry standard Film-Tec FT-30 membrane while maintaining a high NaCl rejection of >99%. Working with an industrial partner, he has recently scaled up this membrane successfully to the commercial size of 42 inches in width and a length of about 2000 ft. The membrane modules fabricated from this scale-up membrane are being tested by the U. S. Bureau of Reclamation at the Brackish Groundwater National Desalination Research Facility in Alamogordo, NM. The initial results have confirmed the superior performance.
Developed novel supported liquid membranes with strip dispersion for removal and recovery of indium from aqueous solutions and antibiotic (Cephalexin) from enzymatic synthesis mixtures. This work has resulted in effective recovery of indium for reuse in a commercial plant and effective Cephalexin recovery from enzymatic mixtures without enzyme deactivation, which commonly occurs when complexation is conducted in enzymatic reaction mixtures.

Developed novel proton-exchange membranes (PEMs) synthesized from copolymers containing sulfonated hard segments for proton conductivity and hydrophilic soft segments for water retention. The PEMs have shown very high conductivity (0.1 S/cm at 0 – 50% relative humidity, exceeding DOE’s target), which is much higher than Nafion® at 120^oC, and they have also exhibited effective conductivity at 25^oC. The novel membranes have also exhibited high fuel cell performance and can enable the widespread use of PEM fuel cells.
Developed biocompatible and biodegradable poly(caprolactone) membranes with ~55 nm pores capable of a constant drug release rate for implantable drug delivery devices. This work has resulted in disappearance of cancer tumors in mice.
Ho's membrane work for CO₂ capture from flue gas in power plants has drawn significant DOE funding.

More news about Professor Ho.

Professional Activities

Chair, AIChE Executive Board of Program Committee, 2015, Immediate Past Chair, 2016, First Vice Chair, 2014, and Second Vice Chair, 2013.
Academician, Academia Sinica, Taiwan, 2014.
Fellow, American Institute of Chemical Engineers, 2009-now.
Meeting Program Chairman (invited), AIChE Annual Meeting in Nashville, TN, November 8-13, 2009 – a great success with excellent program and attendance in spite of the tough economic situation.
Director of Board, North American Membrane Society, 2005-2011.
Chairman, Board of Directors, Chinese-American Chemical Society (CACS), 2002-2008.
Member, the National Academy of Engineering, U.S.A., 2002.
Meeting Program Chairman (invited), AIChE Spring National Meeting in Atlanta, GA, March 5-9, 2000 – set record numbers of attendees, topical conferences and technical sessions in the AIChE Spring National Meeting history so far, up to this meeting.
Chairman, AIChE Separations Division, 1997 (elected in 1994 for Second Vice-Chairman in 1995 and First Vice-Chairman in 1996).
Director, AIChE Separations Division, 1992-1993.

KEY DISTINCTIONS

National Academy of Engineering, 2002
>60 U.S. patents

NATIONAL HONORS

American Institute of Chemical Engineers:

Leadership Award for Innovations in Green Process Engineering, AIChE Program Committee, 2018
Lawrence B. Evans Award in Chemical Engineering Practice, 2012
Advisor Recognition for Graduate Research Paper Award in Separations, Separations Division of the American Institute of Chemical Engineers, 2011
AIChE Excellence and Appreciation Award, 2009
AIChE Fellow, 2009
Clarence G. Gerhold Award, AIChE Separations Division, 2007
Co-winner of Graduate Research Paper Award in Separations, AIChE Separations Division, 2007
AIChE Institute Award for Excellence in Industrial Gases Technology, 2006
AIChE Excellence and Appreciation Award, 2000

North American Membrane Society:

First Place Graduate Research Poster Paper Award, NAMS Annual Meeting, Charleston, SC, June 21-24, 2009

INTERNATIONAL

Academia Sinica:

Elected member, the highest form of academic recognition in the Republic of China in Taiwan, 2014

Indian Institute of Chemical Engineers:

Chemcon Distinguished Speaker Award-Prof. G. S. Laddha Medal, 2015
Chemcon Distinguished Speaker Award-Perkin Elmer Professor R. Kumar, 2004

National Taiwan University:

Outstanding Alumnus Award, National Taiwan University, Taipei, Taiwan, 2020
Distinguished Alumnus Award, the 70th Anniversary of the Department of Chemical Engineering, Taipei, Taiwan, 2015

New Taipei City:

Distinguished Alumnus Award and Keynote Speech, Centennial Celebration of Wan-Li Elementary School, Wan-Li, Taiwan, March 31, 2013

INDUSTRY

Industrial Research 100 Award for Flexsorb SE gas treating research and development, 1985
Honorable Mention of the Kirkpatrick Chemical Engineering Achievement Award for Flexsorb SE, 1985

REGIONAL

New Jersey Investors Congress and Hall of Fame:

Inventor of the Year, 1991

The Ohio State University:

Institute for Materials Research Innovation Award for Most Invention Disclosures Filed, 2017
Office of Technology Commercialization Accelerator Award, 2017
College of Engineering Lumley Research Award, 2010
College of Engineering Innovators Award, 2008

_____

ADDITIONAL HONORS

Honorary Faculty, Indian Institute of Technology Guwahati, Guwahati, India, 2020-2022.
Honorary International Chair Professor, Tianjin Polytechnic University, Tianjin, China, 2017-now.
Invited Visiting Professor, Beijing University of Chemical Technology, Beijing, China, 2017-now.
Invited Chief Science Advisor, Center for Membrane and Water Science and Technology, Zhejiang University of Technology, Hangzhou, Zhejiang, China, 2016-now.
Honorary Professor, Tianjin University, Tianjin, China, 2015-now.
Three Sessions in Honor of Winston Ho at the Annual Meeting of the American Institute of Chemical Engineers in Atlanta, GA, November 16-21, 2014.
Invited Lecturer, Bent Seminar, “New Developments on Membranes for CO2 and Water Separations”, Department of Chemical Engineering, University of Missouri, Columbia, MO, March 18, 2014.
Invited Member, National Research Council panel on energy and water, 2013.
Invited John A. Quinn Lecturer in Chemical Engineering, “Facilitated Transport Membranes for CO₂ and Antibiotic Separations”, Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, April 25, 2012.
Invited Distinguished Lecturer, “New Membranes for CO₂ Separation and H₂ and Water Purification”, Waterloo Institute for Nanotechnology at the University of Waterloo, Waterloo, Ontario, Canada, April 14, 2011.
Invited Commencement Speaker, Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, June 5, 2010.
Invited Guest Distinguished Chair Professor, Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, 2010-now.
Invited Guest Professor, Zhejiang University, Hangzhou, Zhejiang, China, 2007-2018.
Invited Member, National Research Council panel on alternative liquid transportation fuels, 2007-2009.
Invited Member, Advanced R&D Advisory Committee, Industrial Technology Research Institute, Hsinchu, Taiwan, 2007-2009.
Invited Shell Chair Professor, Tsinghua University, Beijing, China, 2006, 2008.
Invited Guest Chair Professor of Membranes, R&D Center for Membrane Technology, Chung Yuan University, Chung-Li, Taiwan, 2005-2018.
Invited University Advisor, Chung Yuan University, Chung-Li, Taiwan, 2005-2018.
Invited Member, National Research Council panel on carbon sequestration, 2004-2005.
Co-editor of Membrane Handbook, Recipient of the Professional and Scholarly Publishing Award for the most outstanding engineering work, 1993.

_____

Chronological Listing of Awards:

Outstanding Alumnus Award, National Taiwan University, Taipei, Taiwan, 2020
Leadership Award for Innovations in Green Process Engineering, AIChE Program Committee, 2018.
Accelerator Award, Office of Technology Commercialization, The Ohio State University, 2017.
IMR Innovation Award for Most Invention Disclosures Filed, Institute for Materials Research (IMR), The Ohio State University, 2017.
Chemcon Distinguished Speaker Award – Prof. G. S. Laddha Medal, Indian Institute of Chemical Engineers, 2015.
Distinguished Alumnus Award, the 70th Anniversary of the Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, 2015.
Distinguished Alumnus Award and Keynote Speech, Centennial Celebration of Wan-Li Elementary School, Wan-Li, New Taipei City, Taiwan, March 31, 2013.
Lawrence B. Evans Award in Chemical Engineering Practice, American Institute of Chemical Engineers, 2012.
Advisor Recognition for Graduate Research Paper Award in Separations, Separations Division of the American Institute of Chemical Engineers, 2011.
Lumley Research Award, College of Engineering, The Ohio State University, 2010.
American Institute of Chemical Engineers’ Excellence and Appreciation Award, 2009.
First Place Graduate Research Poster Paper Award, the Annual Meeting of North American Membrane Society, Charleston, SC, June 21-24, 2009.
Clarence G. Gerhold Award, Separations Division of the American Institute of Chemical Engineers, 2007.
Co-winner of Graduate Research Paper Award in Separations, Separations Division of the American Institute of Chemical Engineers, 2007.
Institute Award for Excellence in Industrial Gases Technology, American Institute of Chemical Engineers, 2006.
Chemcon Distinguished Speaker Award, Indian Institute of Chemical Engineers, 2004.
American Institute of Chemical Engineers’ Excellence and Appreciation Award, 2000.
Co-editor of Membrane Handbook, Recipient of the Professional and Scholarly Publishing Award for the most outstanding engineering work, 1993.
Inventor of the Year, New Jersey Inventors Congress and Hall of Fame, 1991.
Industrial Research 100 Award for Flexsorb SE gas treating research and development, 1985.
Honorable Mention of the Kirkpatrick Chemical Engineering Achievement Award for Flexsorb SE, 1985.

Ho, W.S. Winston

Distinguished Professor of Engineering, Chemical and Biomolecular Engineering

Instructor, Materials Science and Engineering

Directory Categories

Faculty

-Sustainability, Energy, Environment, Process Engineering

-Bioengineering, Biotechnology

-Polymers, Nanomaterials

-Membrane Separations

(614) 292-9970

ho.192@osu.edu

The research in Professor Ho’s group is on new membranes and materials for energy, environmental and biochemical applications, including CO₂ capture from flue gas in power plants, H₂ purification for fuel cells and from syngas, supported liquid membranes with strip dispersion for environmental and biochemical applications, water purification, and fuel-cell membranes.

CO₂ Capture from Flue Gas in Power Plants

Professor Ho and his students and researchers have synthesized and demonstrated novel amine-containing membranes capable of possessing both high CO₂ permeability and CO₂/N₂ selectivity at relatively high temperatures (> 57^oC) for CO₂ capture from flue gas in coal- and natural gas-fired power plants. The membranes are based on the facilitated transport mechanism, in which CO₂ transport through the membrane is enhanced via reversible reaction with amine whereas N₂ is rejected due to the absence of reaction in the membrane. His group has elucidated the unusual phenomenon of both permeability and selectivity increases with temperature. They have also demonstrated and elucidated the effect of amine steric hindrance in the solid membrane, showing significant enhancement for CO₂ transport. Moreover, they have shown the membranes stable to 1 – 5 ppm SO₂ and NOx in real flue gas. The membranes have exhibited an exceptionally high CO₂/N₂ selectivity of > 150, combined with a very high CO₂ permeance of > 3500 GPU, achieving the highest combined performance. One of the membranes is being scaled up and demonstrated at 1 MWe scale (20 tonne/day CO₂) with commercial-size 8′′-diameter modules toward commercialization for flue gas CO₂ capture with support of ~$15 million to Ohio State and its partners from DOE, American Electric Power, and Ohio Development Services Agency. This membrane can capture CO₂ at a lower cost than ever before.

H₂ Purification for Fuel Cells and from Syngas

His group has tuned the novel amine-containing membranes to possess both high CO₂ permeability and CO₂/H₂ selectivity at relatively high temperatures (100 – 180^oC) for H₂ purification for fuel cells and from synthesis gas. They have demonstrated the removal of H₂S to <10 ppb in the treated synthesis gas needed for water-gas-shift (WGS) reaction as H₂S deactivates commercially available WGS catalysts. They obtained < 10 ppm CO in the H₂ product with a WGS membrane reactor using the membrane to drive the WGS reaction to the product side via CO₂ removal. The data were in good agreement with the prediction of their non-isothermal model. They have also investigated the membranes for hydrogen purification in conjunction with solid oxide fuel cells for zero carbon electricity generation. Furthermore, investigation of the membranes for the removal of CO₂ and H₂S from coal-derived synthesis gas at a relatively high pressure of ~35 atm, i.e., in integrated gasification combined cycle (IGCC), is in progress with funding from DOE and Ohio Development Services Agency. Extending the membrane applicability to high-pressure separations including natural gas sweeting is underway.

Other Separations

The investigation of CO₂-selective membranes for other separations is underway. The other separations include the removal of CO₂ and H₂S from syngas and biogas as well as CO₂ from confined space air.

At The Ohio State University, Columbus, OH, 2002 to present:

The first to propose, synthesize, and experimentally demonstrate novel CO₂-selective membranes capable of possessing high CO₂ permeability and CO₂/H₂ selectivity (>80) at relatively high temperatures (100 – 180^oC) for H₂ purification and CO₂ capture. The membranes have been synthesized by incorporating amino groups in polymer networks. Also the first to elucidate the unusual phenomenon of both permeability and selectivity increases with temperature. He and his students removed H₂S to <10 ppb in syntheses gas. They were also the first to obtain <10 ppm CO in the H₂ product with a water-gas-shift (WGS) membrane reactor using the membrane to drive the WGS reaction to the product side via CO₂ removal. The data were in good agreement with their model prediction. This was the first CO₂-selective membrane WGS reactor. The membranes are being scaled up for H₂ purification for fuel cells and CO₂ capture from flue gas and syngas.
Developed the novel concept of incorporating hydrophilic groups chemically into membrane structure to provide an additional pathway for water transport and to overcome the low hydrophilicity/flux issue inherent in interfacially polymerized membranes. This work has resulted in >100% increase in water flux vs. the industry standard Film-Tec FT-30 membrane while maintaining a high NaCl rejection of >99%. Working with an industrial partner, he has recently scaled up this membrane successfully to the commercial size of 42 inches in width and a length of about 2000 ft. The membrane modules fabricated from this scale-up membrane have been tested by the U. S. Bureau of Reclamation at the Brackish Groundwater National Desalination Research Facility in Alamogordo, NM. The results have confirmed the superior performance.
Developed novel supported liquid membranes with strip dispersion for removal and recovery of indium from aqueous solutions and antibiotic (Cephalexin) from enzymatic synthesis mixtures. This work has resulted in effective recovery of indium for reuse in a commercial plant and effective Cephalexin recovery from enzymatic mixtures without enzyme deactivation, which commonly occurs when complexation is conducted in enzymatic reaction mixtures.
Developed new proton-exchange membranes (PEMs) synthesized from copolymers containing sulfonated hard segments for proton conductivity and hydrophilic soft segments for water retention. The PEMs have shown very high conductivity (0.1 S/cm at 0 – 50% relative humidity, exceeding DOE’s target), which is much higher than Nafion^® at 120^oC, and they have also exhibited effective conductivity at 25^oC. The new membranes have also exhibited high fuel cell performance and can enable the widespread use of PEM fuel cells.
Developed biocompatible and biodegradable poly(caprolactone) membranes with ~55 nm pores capable of a constant drug release rate for implantable drug delivery devices. This work has resulted in disappearance of cancer tumors in mice.

University of Kentucky, Lexington, KY, Professor of Chemical Engineering, Teaching and Research, 1999-2002.

Effective transition from the industrial R&D of 28 years to academic teaching and research.
Initiated research on a CO₂-selective water-gas-shift membrane reactor for hydrogen purification for fuel cells.

Commodore Separation Technologies, Inc., Kennesaw, GA, Senior Vice President, Technology, 1998-1999.

Invented and developed novel supported liquid membranes (SLMs) with strip dispersion for removal and recovery of heavy metals (including chromium, copper, zinc, cobalt, nickel, mercury) and radionuclides (e.g., Sr-90) from waste waters and process streams. The strip dispersion provides the constant supply of organic membrane solution for solving the long-standing stability problem of SLMs and increases the surface area for stripping. The SLM technology is one of the most effective and very few zero-discharge processes for treating heavy metals and radionuclides in wastewaters.
Invented and developed the novel SLM technology for toxic hexavalent chromium – it removes Cr(VI) down to less than 0.05 ppm and concentrates to ~20% Cr(VI) (~63% Na₂CrO₄) as a product, a zero discharge process.

Exxon Research and Engineering Company, Corporate Research, Annandale, NJ, Senior Scientist, 1977-1998.

Jointly invented, developed, and commercialized 4 gas treating processes: (1) Flexsorb SE for selective H₂S removal from CO₂-containing gases, e.g., sulfur plant tail gas and natural gas, (2) Flexsorb SE Plus for low-leak, selective H₂S removal down to less than 10 ppm H₂S in the treated gas, (3) Flexsorb HP for CO₂ removal in H₂ and NH₃plants, and (4) Flexsorb PS for simultaneous removal of H₂S and CO₂from natural gas and synthesis gas; commercialized in more than 40 plants with a net present value of $500 million in 1985 dollar. The Flexsorb SE Plus solves the sulfur emission/acid rain problem from refineries and natural gas plants.
Invented and developed the membrane process based on newly synthesized, novel polyimide-polyester segment copolymers for the separation of aromatic from saturated molecules via pervaporation, which was the first membrane technology for organic systems in the world. Elucidated the functions of hard and soft segments for high temperature molecular separations.
Jointly developed new theoretical models for membrane separations, including solubility, diffusivity and transport models for pervaporation. These models have guided the molecular design of new copolymer membranes and given good prediction for aromatics/saturates separations.
Invented and synthesized new separating agents, novel membranes, and complexing solutions for olefin/paraffin separations with high selectivity and flux / capacity. Jointly elucidated the carrier saturation phenomenon under high olefin pressures. This work has provided novel approaches for the separation of olefins, which are important petrochemical feedstocks.
Invented and developed the synthesis of new separating agents including the new compositions of matter of sterically hindered amines for gas treating and polyimide-polyester copolymers for aromatics/saturates separations.
Developed the new advancing front model for emulsion liquid membranes (ELMs) and the fluid dynamic model for core-annular flow. The advancing front model provided the first quantitative description of ELMs without adjustable parameters. The fluid dynamic model gives a quantitative description of core-annular flow.
Developed novel fluids for fracturing and controlling oil and gas wells.
Held various supervisory and team leadership positions (for 12 years) including section/group head and project leader.

Xerox Corporation, Wilson Center for Technology, Webster, NY, Scientist, 1974-1977.

Developed film coating processes for commercialization of new organic photoreceptors; investigated the processes theoretically and experimentally for scale-up and commercialization.
Elucidated the diffusion of solvents in polymeric films for drying of organic coatings; investigated the dispersion of inorganic pigments into binder, solvent, and coating systems.

Allied Chemical Corporation, Central Research Laboratories, Morristown, NJ, Research Engineer, 1971-1974.

Invented and developed the novel concept of using a membrane as the interface stabilizer for the membrane solvent extraction process to eliminate dispersing, entrainment, back mixing, and flooding problems and to overcome density difference and mass transfer limitations. This concept has been used for membrane contactors and led to their commercialization for carbonization of beverages, stripping of oxygen from water for boilers and metal vessels to prevent them from corrosion, and blood oxygenation for lung disease patients.
Developed new polymeric membranes and membrane solvent extraction processes for wastewater treatment, organics removal, and hydrometallurgical extraction.

Han, Yang

Research Scientist, Chemical and Biomolecular Engineering

Directory Categories

Researchers

-Sustainability, Energy, Environment, Process Engineering

han.779@osu.edu

Zou, Changlong

Post Doctoral Scholar, Chemical and Biomolecular Engineering

zou.153@osu.edu

Huang, Yi Chen

Graduate Research Associate, Chemical and Biomolecular Engineering

Graduate Teaching Associate, Chemical and Biomolecular Engineering

PhD Student, Chemical and Biomolecular Engineering

huang.3916@osu.edu

CBE Department News

Papers and Book Chapters

J. A. Quinn, J. L. Anderson, W. S. W. Ho, and W. J. Petzny, “Model Pores of Molecular Dimension: The Preparation and Characterization of Track-Etched Membranes”, Biophys. J., 12, 990-1007 (1972).
W. S. W. Ho and F. A. Holland, “Between-Rolls Metering Coating Technique: A Theoretical and Experimental Study”, TAPPI, 61, 53-56 (1978).
W. S. W. Ho, T. A. Hatton, E. N. Lightfoot, and N. N. Li, “Extraction with Liquid Surfactant Membranes: A Diffusion Controlled Model”, Proceedings of the Second World Congress of Chemical Engineering, Montreal, Canada, Volume IV, pp. 209-215 (1981).
R. E. Terry, N. N. Li, and W. S. W. Ho, “Extraction of Phenolic Compounds and Organic Acids by Liquid Membranes”, J. Membr. Sci., 10, 305-323 (1982).
W. S. W. Ho, T. A. Hatton, E. N. Lightfoot, and N. N. Li, “Batch Extraction with Liquid Surfactant Membranes: A Diffusion Controlled Model”, AIChE J., 28, 662-670 (1982).
J. Bock, R. R. Klein, P. L. Valint, and W. S. W. Ho, “Liquid Membrane Extraction of Uranium from Wet Process Phosphoric Acid”, in Sulfuric/Phosphoric Acid Plant Operations, American Institute of Chemical Engineers, New York, pp. 175-183 (1982).
H. C. Hayworth, W. S. W. Ho, W. A. Burns, and N. N. Li, “Extraction of Uranium from Wet Process Phosphoric Acid by Liquid Membranes”, Separ. Sci. Technol., 18, 493-521 (1983).
W. S. W. Ho and N. N. Li, “Modeling of Liquid-Membrane Extraction Processes”, in Hydrometallurgical Process Fundamentals, R. G. Bautista, ed., Plenum Press, New York, pp. 555-597 (1984). (invited).
W. S. W. Ho and N. N. Li, “Membrane Processes”, in Perry's Chemical Engineers’ Handbook, R. H. Perry and D. Green, eds., McGraw-Hill Book Co., New York, 6th Edition, Section 17, pp. 14-35 (1984). (invited).
M. E. Edgerton, G. D. Byrne, and W. S. W. Ho, “Numerical Calculation of the Simultaneous Absorption of Two Gases with Reversible Chemical Reactions”, Comput. Chem. Eng., 10, 551-556 (1986).
D. W. Savage, G. R. Chludzinski, S. Wiechert, J. L. Kaufman, L. L. Ansell, W. S. W. Ho, and G. Sartori, “New Absorption Processes for Selective Hydrogen Sulfide Separation and Other Gas Treating Applications”, Inst. Chem. Eng. Symp. Ser., 104, A347-A358 (1987).
G. Sartori, W. S. W. Ho, D. W. Savage, G. R. Chludzinski, and S. Wiechert, “Sterically-Hindered Amines for Acid Gas Absorption”, Separ. Purif. Methods, 16, 171-200 (1987).
W. S. W. Ho, G. Doyle, D. W. Savage, and R. L. Pruett, “Olefin Separations via Complexation and Transport with Cuprous Diketonate”, Proceedings of the 1987 International Congress on Membranes and Membrane Processes, Tokyo, Japan, pp. 783-784 (1987).
G. T. Rochelle, P. C. Tseng, W. S. W. Ho, and D. W. Savage, “H₂S Vapor-Liquid Equilibrium Measurement by the Electrode Method”, Ind. Eng. Chem. Res., 27, 195-197 (1988).
P. C. Tseng, W. S. W. Ho, and D. W. Savage, “Carbon Dioxide Absorption into Promoted Carbonate Solutions”, AIChE J., 34, 922-931 (1988).
W. S. W. Ho, G. Doyle, D. W. Savage, and R. L. Pruett, “Olefin Separations via Complexation with Cuprous Diketonate”, Ind. Eng. Chem. Res., 27, 334-337 (1988).
W. S. W. Ho, “Emulsion Liquid Membranes: A Review”, Proceedings of the 1990 International Congress on Membranes and Membrane Processes, Chicago, IL, Vol. I, pp. 692-694 (1990).
S. J. Doong and W. S. W. Ho, “Sorption of Organic Vapors in Semicrystalline Polyethylene”, Polymer Preprints, 31 (2), 580 (1990).
S. J. Doong and W. S. W. Ho, “Sorption of Organic Vapors in Polyethylene”, Ind. Eng. Chem. Res., 30, 1351-1361 (1991).
S. J. Doong and W. S. W. Ho, “Diffusion of Hydrocarbons in Polyethylene”, Ind. Eng. Chem. Res., 31, 1050-1060 (1992).
W. S. W. Ho and N. N. Li, “Recent Advances in Emulsion Liquid Membranes”, Proceedings of the First AIChE Separations Division Topical Conference on Separations Technologies: New Developments and Opportunities, Miami Beach, FL, pp. 762-767 (1992).
W. S. W. Ho and K. K. Sirkar, “The State of the Art of Membrane Processes: An Overview”, Ibid., pp. 782-787 (1992).
S. J. Doong and W. S. W. Ho, “Sorption and Diffusion of Aromatic Hydrocarbons in Semicrystalline Polyethylene”, Proceedings of the Fifth Annual Meeting of the North American Membrane Society, Lexington, KY, Paper 4E (1992).
W. S. W. Ho and K. K. Sirkar, “Overview of Membrane Processes”, in Membrane Handbook, W. S. W. Ho and K. K. Sirkar, eds., Chapman & Hall, New York, pp. 1-15 (1992).
W. S. W. Ho and N. N. Li, “Definitions for Emulsion Liquid Membranes”, Ibid., pp. 597-610 (1992).
W. S. W. Ho and N. N. Li, “Theory for Emulsion Liquid Membranes”, Ibid., pp. 611-655 (1992).
Z. M. Gu, W. S. W. Ho, and N. N. Li, “Design Considerations for Emulsion Liquid Membranes”, Ibid., pp. 656-700 (1992).
W. S. W. Ho and D. C. Dalrymple, “Facilitated Transport of Olefins in Ag⁺-Containing Polymer Membranes”, J. Membr. Sci., 91, 13-25 (1994).
W. S. W. Ho and N. N. Li, “Core-Annular Flow of Liquid Membrane Emulsion”, AIChE J., 40, 1961-1968 (1994).
G. Sartori, W. S. W. Ho, W. A. Thaler, G. R. Chludzinski, and J. C. Wilbur, “Sterically-hindered Amines for Acid Gas Absorption”, Spec. Publ.-R. Soc. Chem., 153, 205 (1994).
S. J. Doong, W. S. W. Ho, and R. P. Mastondrea, “Prediction of Flux and Selectivity in Pervaporation through a Membrane”, J. Membr. Sci., 107, 129-146 (1995).
L. J. Shulik, G. Sartori, W. S. W. Ho, W. A. Thaler, G. E. Milliman, and J. C. Wilbur, “A Novel, V⁺⁵-Stable K₂CO₃ Promoter for CO₂ Absorption”, Sep. Sci. Technol., 31, 1663 (1996).
J. D. Way and W. S. W. Ho, “A Tribute to Norman N. Li”, in Chemical Separations with Liquid Membranes, R. A. Bartsch and J. D. Way, eds., American Chemical Society, Washington, DC, ACS Symposium Series, 642, 11-15 (1996).
W. S. W. Ho and N. N. Li, “Recent Advances in Emulsion Liquid Membranes”, in Chemical Separations with Liquid Membranes, R. A. Bartsch and J. D. Way, eds., American Chemical Society, Washington, DC, ACS Symposium Series, 642, 208-221 (1996).
J. Zhou, W. S. W. Ho, and N. N. Li, “Separation Processes”, in Encyclopedia of Applied Physics, G. L. Trigg, ed., VCH Publishers, Brooklyn, NY, pp. 599-641 (1996).
W. S. W. Ho, G. Sartori, W. A. Thaler, D. C. Dalrymple, R. P. Mastondrea, and D. W. Savage, “Hard/Soft Segment Copolymer Membranes for Aromatics / Saturates Separation”, Proceedings of the 1996 International Congress on Membranes and Membrane Processes, Yokohama, Japan, Keynote Lecture Paper S-20-1-K (1996).
D. W. Zhou, C. R. Huang, N. N. Li, and W. S. W. Ho, “Removal of Strontium from Wastewater by Emulsion Liquid Membrane”, Ibid., Paper S-8-1-5 (1996).
W. S. W. Ho, G. Sartori, W. A. Thaler, D. C. Dalrymple, R. P. Mastondrea, and D. W. Savage, “Thin Membranes of New Hard/Soft Segment Copolymers”, Proceedings of the First Joint Topical Conference on Processing: Structure and Properties of Polymeric Materials at AIChE Annual Meeting, Chicago, IL, pp. 135-137 (1996).
W. S. W. Ho and N. N. Li, “Recent Advances in Emulsion Liquid Membranes”, Proceedings of the Second Joint China/USA Chemical Engineering Conference, Beijing, China, pp. 578-584 (1997).
W. S. W. Ho and G. Sartori, “Advances in Gas Treating and Membrane Separation”, Ibid., pp. 593-598 (1997).
W. S. W. Ho and R. G. Luo, eds., Proceedings of the Topical Conference on Separation Science and Technologies at AIChE Annual Meeting, Los Angeles, CA (1997).
W. S. W. Ho, G. Sartori, H. L. Fang, W. A. Thaler, D. C. Dalrymple, and R. P. Mastondrea, “Crosslinked Polyimide-Polyester Copolymer Membranes for Aromatics/Saturates Separation”, Proceedings of the Topical Conference on Separation Science and Technologies at AIChE Annual Meeting, Los Angeles, CA, pp. 745-750 (1997).
G. Sartori, H. W. Deckman, W. S. W. Ho, J. R. Livingston, E. J. Mozeleski, “Membrane-Confined Rh Catalyst for Oxo Reaction”, Ibid., pp. 665-667 (1997).
G. Sartori, W. S. W. Ho, R. E. Noone, and B. H. Ballinger, “Poly(fluoroolefin) Membranes for Aromatics/Saturates Separation”, Ibid., pp. 1403-1407 (1997).
W. S. W. Ho, T. K. Poddar, R. Pusic, and J. Roller, “Unique Membrane Technology for Removal/Recovery of Metals from Wastewaters and Process Streams”, Proceedings of the American Electroplaters and Surface Finishers Society/EPA Conference, Lake Buena Vista, FL, Jan. 25–27, 1999, pp. 141-148.
W. S. W. Ho, T. K. Poddar, R. Pusic, and J. Roller, “Supported Liquid Membrane Process for Chromium Removal and Recovery”, Proceedings of the 1999 International Congress on Membranes and Membrane Processes, Toronto, Canada, June 12–18, 1999.
R. Song, W. S. W. Ho, N. N. Li, and R. J. Petersen, “Polyamide TFC Membrane Formation Studies”, Ibid., (1999).
W. S. W. Ho, T. K. Poddar, and J. Roller, “New Membrane Technology for Chromium Removal and Recovery”, Proceedings of the 4th Topical Conference on Separation Science and Technologies at AIChE Annual Meeting, Dallas, TX, Paper 12e (1999).
W. S. W. Ho, B. Wang, T. E. Neumuller, and J. Roller, “Supported Liquid Membranes for Removal and Recovery of Metals from Waste Waters and Process Streams”, Ibid., Paper 200d (1999).
W. S. W. Ho, S. Kalini, and T. K. Poddar, “Cobalt Removal and Recovery with Supported Liquid Membranes”, Proceedings of the Topical Conference on Membrane and Extraction Science and Technologies for Environmental Applications at AIChE Spring National Meeting, Atlanta, GA, pp. 10-15 (2000).
W. S. W. Ho and T. K. Poddar, “New Membrane Technology for Removal and Recovery of Metals from Waste Waters and Process Streams”, Ibid., pp. 38-43 (2000).
M. A. Kuehne, R. Q. Song, N. N. Li, W. S. W. Ho, and R. J. Petersen, “Flux Enhancement in TFC RO Membranes”, Proceedings of the Third Joint China/USA Chemical Engineering Conference, Beijing, China, pp. 04-041 – 04-044 (2000).
W. S. W. Ho and T. K. Poddar, “New Membrane Technology for Removal and Recovery of Metals from Waste Waters”, Ibid., pp. 04-120 – 04-128 (2000).
W. S. W. Ho and T. K. Poddar, “New Membrane Technology for Removal and Recovery of Chromium from Waste Waters”, Environ. Prog., 20, 44-52 (2001).
W. S. W. Ho, B. Wang, T. E. Neumuller, and J. Roller, “Supported Liquid Membranes for Removal and Recovery of Metals from Waste Waters and Process Streams”, Environ. Prog., 20, 117-121 (2001). (invited).
W. S. W. Ho and B. Wang, “strontium Removal by New Alkyl Phenylphosphonic Acids in supported liquid Membranes with strip dispersion”, Ind. Eng. Chem. Res., 41, 381-388 (2002). (invited).
W. S. W. Ho, T. K. Poddar, and T. E. Neumuller, “Removal and Recovery of Copper and Zinc by Supported Liquid Membranes with Strip Dispersion”, J. Chin. Inst. Chem. Engrs., 33, 67-76 (2002). (invited).
W. S. W. Ho, “Recent Developments and Applications for Hollow-Fiber Membranes”, J. Chin. Inst. Chem. Engrs., 34, 75-89 (2003). (invited).
W. S. W. Ho, “Removal and Recovery of Metals and Other Materials by Supported Liquid Membranes with Strip Dispersion”, in Advanced Membrane Technology, N. N. Li, E. Drioli, W. S. W. Ho, and G. G. Lipscomb, eds., New York Academy of Sciences, New York, pp. 97-122 (2003).
W. S. W. Ho, “Development of Novel Water-Gas-Shift Membrane Reactor”, Proceedings of DOE Hydrogen, Fuel Cells & Infrastructure Technologies Program 2003 Annual Merit Review, Berkeley, CA, May 19-22, 2003, Paper/Project 108.
J. Huang, J. Zou, and W. S. W. Ho, “Facilitated Transport Membranes for Environmental and Energy Applications”, Proceedings of the International Symposium on Emerging Environmental Technology, Kwangju Institute of Science & Technology, Gwangju, Korea, November 4, 2003, pp. 32 – 38. (invited).
J. Zou, G. Shil, and W. S. W. Ho, “Carbon Dioxide-Selective Membranes for Hydrogen Purification and Gas Separation”, Proceedings of Topical Conference on Advanced Membrane-Based Separations at AIChE Annual Meeting, San Francisco, CA, November 16-21, 2003, Paper 74t.
J. Huang and W. S. W. Ho, “A Modeling Study of CO₂-Selective Water-Gas-Shift Membrane Reactor for Fuel Cell”, Ibid., Paper 171c.
W. S. W. Ho, “Development of Novel CO₂-Selective Membrane for H₂ Purification”, Proceedings of DOE Hydrogen, Fuel Cells & Infrastructure Technologies 2004 Program Review, Philadelphia, PA, May 24-27, 2004, Project No. 107, Paper FC-P3.
W. S. W. Ho, “Recent Developments on Membranes for Water Purification”, Proceedings of 10th International Workshop on Drinking Water Quality Management and Treatment Technology, Taipei, Taiwan, June 1-2, 2004, Keynote Lecture, Paper No. B4-1, pp. 1-17. (invited).
J. Huang, J. Zou, and W. S. W. Ho, “Carbon Dioxide-Selective Water-Gas-Shift Membrane Reactor: A Modeling Study for Fuel Cells”, Proceedings of North American Membrane Society 2004 Annual Meeting, Honolulu, Hawaii, June 26-30, 2004, Keynote Lecture, pp. 197-198.
J. Huang, J. Zou, and W. S. W. Ho, “Engineering Membranes for Environmental and Energy Applications”, Proceedings of 10th Congress of Asia Pacific Confederation of Chemical Engineering, Kitakyushu, Japan, October 17-21, 2004, Keynote Lecture, Paper No. 3F-01. (invited).
J. Zou, J. Huang, and W. S. W. Ho, “Facilitated Transport Membranes for Environmental and Energy Applications”, Proceedings of First India-USA Joint Chemical Engineering Conference, Mumbai, India, December 28-30, 2004, Keynote Lecture, Paper No. 12.6.2.
M. C. Nagel and W. S. W. Ho, “CO₂-Selective Membranes for Hydrogen Purification”, Technical Insights, Section 8 (June 30, 2005).
J. Corman, C. Christopher, R. L. Espino, G. M. Hidy, W. S. W. Ho, D. Keith, L. W. Lake, M. E. Q. Pilson, J. J. Wise, and J. M. Wootten, “Report of the Panel on Benefits of Sequestration R&D”, in Prospective Evaluation of Applied Energy Research and Development at DOE (Phase One): A First Look Forward, National Research Council, The National Academies Press, Washington, DC, 2005.
J. Huang, L. El-Azzami, and W. S. W. Ho, “Modeling of CO₂-Selective Water-Gas-Shift Membrane Reactor for Fuel Cell”, J. Membr. Sci., 261 (1-2), 67-75 (2005).
J. Zou, J. Huang, and W. S. W. Ho, “A Modeling and Experimental Study of Novel CO₂-Selective Membrane Reactor with Water Gas Shift Reaction for Fuel Cells”, Proceedings of 2005 International Membrane Conference, Chung-Li, Taiwan, August 18-19, 2005, Keynote Lecture, Paper No. PL-III.
J. Huang, J. Zou, and W. S. W. Ho, “CO₂-Selective Water-Gas-Shift Membrane Reactor for Fuel Cells: A Modeling and Experimental Study”, Proceedings of 2005 International Congress on Membranes and Membrane Processes, Seoul, Korea, August 21-26, 2005, Keynote Lecture, Paper No. Mo02D-1.
J. Huang, J. Zou, and W. S. W. Ho, “A Modeling and Experimental Study of CO₂-Selective Water-Gas-Shift Membrane Reactor for Fuel Cells”, Proceedings of Topical Conference on Fuel Cells Technology at AIChE Annual Meeting, Cincinnati, OH, October 30 - November 4, 2005, Paper 501b.
Y.-H. Tee, J. Zou, and W. S. W. Ho, “CO₂-Selective Membranes Containing Dimethylglycine Mobile Carriers and Polyethylenimine Fixed Carrier”, J. Chin. Inst. Chem. Engrs., 37 (1), 37-47 (2006). (invited).
J. Huang, J. Zou, and W. S. W. Ho, “CO₂-Selective Membranes for Hydrogen Purification”, Proceedings of 2006 Conference on Membrane Science and Technology, Chung-Li, Taiwan, June 8-9, 2006, Keynote Lecture, Paper No. KL. (invited).
W. S. W. Ho, “Removal and Recovery of Metals by Supported Liquid Membranes with Strip Dispersion”, Proceedings of 2006 Workshop on Membrane Science and Technology, Chung-Li, Taiwan, June 8, 2006, Invited Lecture, Paper No. 5. (invited).
X. Ye, H. Bai, and W. S. W. Ho, “Synthesis and Characterization of New Sulfonated Polyimides as Proton-Exchange Membranes for Fuel Cells”, J. Membr. Sci., 279 (1+2), 570-577 (2006).
J. Zou, J. Huang, and W. S. W. Ho, “CO₂-Selective Membranes with Water Gas Shift Reaction for H₂ Purification”, Proceedings of International Workshop on Process Intensification in Fluid and Particle Engineering, Kobe, Japan, October 15-18, 2006, Invited Keynote Lecture, Paper No. K201, pp.12-13. (invited).
G. Shil and W. S. W. Ho, “Synthesis and Characterization of Interfacially Polymerized Membranes for CO₂Separation”, J. Environ. Eng. Mgmt., 16 (4), 233-241 (2006). (invited).
J. Zou and W. S. W. Ho, “CO₂-Selective Polymeric Membranes Containing Amines in Crosslinked Poly(vinyl alcohol)”, J. Membr. Sci., 286, 310-321 (2006).
J. Zou, J. Huang, and W. S. W. Ho, “CO₂-Selective Water Gas Shift Membrane Reactor for Fuel Cell Hydrogen Processing”, Ind. Eng. Chem. Res., 46 (8), 2272-2279 (2007).
L. B. Lave, C. Christopher, G. M. Hidy, W. S. W. Ho, D. Keith, L. W. Lake, M. E. Q. Pilson, J. J. Siirola, J. E. Smith, R. H. Socolow, and J. M. Wootten, “Report of the Panel on DOE’s Carbon Sequestration Program”, in Prospective Evaluation of Applied Energy Research and Development at DOE (Phase Two), National Research Council, The National Academies Press, Washington, DC, 2007.
H. Bai and W. S. W. Ho, “New Membranes for Fuel Cells”, Proceedings of Fourth Conference of Aseanian Membrane Society, Taipei, Taiwan, August 16-18, 2007, Plenary Lecture, Paper No. PL-I. (invited).
B. Mandal and W. S. W. Ho, “Synthesis Gas Purification by Polymeric Membranes Containing Fixed and Mobile Carriers”, Int. J. Chem. Sci., 5 (4), 1938-1946 (2007).
J. Zou and W. S. W. Ho, “Hydrogen Purification for Fuel Cells by Carbon Dioxide Removal Membrane Followed by Water Gas Shift Reaction”, J. Chem. Eng. Japan, 40 (11), 1011-1020 (2007). (invited).
J. Huang, J. Zou, and W. S. W. Ho, “Carbon Dioxide Capture Using a CO₂-Selective Facilitated Transport Membrane”, Ind. Eng. Chem. Res., 47 (4), 1261-1267 (2008).
H. Bai and W. S. W. Ho, “Carbon Dioxide-Selective Membrane for Hydrogen Purification and Carbon Dioxide Capture”, Proceedings of the TMS (The Minerals, Metals & Materials Society) Annual Meeting, Supplemental Volume 1: Materials Processing and Properties, New Orleans, LA, March 9-13, 2008, Invited Plenary Lecture, 1, 529-535 (2008). (invited).
H. Bai and W. S. W. Ho, “New Poly(ethylene oxide) Soft Segment-Containing Sulfonated Polyimide Copolymers for High Temperature Proton-Exchange Membrane Fuel Cells”, J. Membr. Sci., 313 (1-2), 75-85 (2008).
J. Huang and W. S. W. Ho, “Effects of System Parameters on the Performance of CO₂-Selective WGS Membrane Reactor for Fuel Cells”, J. Chin. Inst. Chem. Engrs., 39 (2), 129-136 (2008). (invited).
W. S. W. Ho, “Recent Developments on Membranes for Water Purification”, Proceedings of International Membrane Conference, Chung-Li, Taiwan, June 27-28, 2008, Invited Keynote Lecture. (invited).
H. Bai and W. S. W. Ho, “New Polymer Membranes for Hydrogen Purification and Proton Transport for Fuel Cells”, Proceedings of Macro 2008, Polymers at Frontiers of Science and Technology, Taipei, Taiwan, June 29-July 4, 2008, Invited Keynote Lecture. (invited).
C. Yen, H. He, L. J. Lee, and W. S. W. Ho, “Synthesis and Characterization of Nanoporous Polycaprolactone Membranes for Controlled Drug Release”, Proceedings of 2008 International Congress on Membranes and Membrane Processes, Honolulu, Hawaii, July 12-18, 2008, Paper No. Asymmetric Polymeric Membrane Formation – 2.
M. E. Vilt and W. S. W. Ho, “Supported Liquid Membranes with Strip Dispersion for the Recovery of Cephalexin”, Proceedings of 2008 International Congress on Membranes and Membrane Processes, Honolulu, Hawaii, July 12-18, 2008, Paper No. Biomedical and Biotechnology II – 6.
X. Zhang, H. He, C. Yen, W. S. W. Ho, and L. J. Lee, “A Biodegradable, Immunoprotective, Dual Nanoporous Capsule for Cell-based Therapies”, Biomater., 29 (31), 4253-4259 (2008).
J. Zou, J. Huang, and W. S. W. Ho, “Facilitated Transport Membranes for Environmental, Energy and Biochemical Applications”, in Advanced Membrane Technology and Applications, N. N. Li, A. G. Fane, W. S. W. Ho, and T. Matsuura, eds., John Wiley & Sons, New York, Chap. 28, pp. 721-754 (2008).
R. Xing and W. S. W. Ho, “Synthesis and Characterization of Cross-linked Polyvinylalcohol/Polyethyleneglycol Blend Membranes for CO₂/CH₄ Separation”, Conference Proceedings of AIChE Annual Meeting, Philadelphia, PA, Nov. 16-21, 2008, pp. 367/1-367/5 (2008).
H. Bai and W. S. W. Ho, “Synthesis and Characterization of New Sulfonated Polyimide Copolymers and Blends as Proton-Exchange Membranes for Fuel Cells”, J. Environ. Eng. Mgmt., 18 (5), 289-300 (2008). (invited).
H. Bai and W. S. W. Ho, “New Carbon Dioxide-Selective Membranes Based on Sulfonated Polybenzimidazole (SPBI) Copolymer Matrix for Fuel Cell Applications”, Ind. Eng. Chem. Res., 48 (5), 2344-2354 (2009).
L. Zhang, I.-S. Park, K. Shqau, W. S. W. Ho, and H. Verweij, “Supported Inorganic Membranes: Promises and Challenges”, J. Minerals Metals Mater. Soc., 61 (4), 61-71 (2009).
H. Bai and W. S. W. Ho, “New Sulfonated Polybenzimidazole (SPBI) Copolymer-based Proton-Exchange Membranes for Fuel Cells”, J. Taiwan Inst. Chem. Engrs., 40 (3), 260-267 (2009). (invited).
M. E. Vilt and W. S. W. Ho, “Supported Liquid Membranes with Strip Dispersion for the Recovery of Cephalexin”, J. Membr. Sci., 342 (1-2), 80-87 (2009).
H. Bai, K. Ramasubramanian, and W. S. W. Ho, “H₂S- and CO₂-Selective Membranes for Fuel Processing for Fuel Cells”, Preprints of Symposia - American Chemical Society, Division of Fuel Chemistry, 54 (2), 820-822 (2009).
H. Bai and W. S. W. Ho, “New Fuel Cell Membranes for Hydrogen Purification and Proton Transport”, Proceedings of Euromembrane 2009 Conference, Montpellier, France, September 6-10, 2009, Paper OF.1.9.
M. E. Vilt and W. S. W. Ho, “Supported Liquid Membranes with Strip Dispersion for the Recovery of Cephalexin”, Proceedings of Euromembrane 2009 Conference, Montpellier, France, September 6-10, 2009, Paper OF.7.5.
C. Yen, H. He, L. J. Lee, W. S. W. Ho, “Synthesis and Characterization of Nanoporous Polycaprolactone Membranes via Thermally- and Nonsolvent-Induced Phase Separations for Biomedical Device Application”, J. Membr. Sci., 343 (1-2), 180-188 (2009).
W. S. W. Ho, “Facilitated Transport Membranes for Environmental, Antibiotic and Energy Applications”, Chinese-American Chemical Society Communications, 3 (2), 13-18 (2009). (invited).
R. Xing and W. S. W. Ho, “Synthesis and Characterization of Crosslinked Polyvinylalcohol/Polyethyleneglycol Blend Membranes for CO₂/CH₄ Separation”, J. Taiwan Inst. Chem. Engrs., 40 (6), 654-662 (2009). (invited).
R. Xing and W. S. W. Ho, “Crosslinked Polyvinylalcohol-Polysiloxane/Fumed Silica Composite Membranes Containing Amines for CO₂/H₂ Separation”, Conference Proceedings of AIChE Annual Meeting, Nashville, TN, Nov. 8-13, 2009, pp. xing1/1-xing1/8 (2009).
J. Huang, J. Zou, and W. S. W. Ho, “CO₂-Selective Membranes for Hydrogen Fuel Processing”, in Hydrogen and Syngas Production and Purification Technologies, K. Liu, C. Song, and V. Subramani, eds., John Wiley & Sons, New York, Chap. 9, pp. 385-413 (2010). (invited).
H. Bai, K. Ramasubramanian, Y. Zhao, and W. S. W. Ho, “New Membranes for Fuel Cells and Carbon Capture”, Proceedings of International Membrane Conference, Chung-Li, Taiwan, May 26-28, 2010, Paper KL-3. (invited).
M. E. Vilt, W. S. W. Ho, and N. N. Li, “Liquid Membranes”, in Comprehensive Membrane Science and Technology, Enrico Drioli and Lidietta Giorno, eds., Elsevier, Amsterdam, Chap. 4.1.4, pp. 79-107 (2010). (invited).
C. Yen, H. He, Z. Fei, X. Zhang, L. J. Lee, and W. S. W. Ho, “Surface Modification of Nanoporous Poly(ε-caprolactone) Membrane with Poly(ethylene glycol) to Prevent Biofouling: Part I. Effects of Plasma Power and Treatment Time”, Int. J. Polym. Mater., 59 (11), 923-942 (2010).
C. Yen, H. He, Z. Fei, X. Zhang, L. J. Lee, and W. S. W. Ho, “Surface Modification of Nanoporous Poly(ε-caprolactone) Membrane with Poly(ethylene glycol) to Prevent Biofouling: Part II. Effects of Graft Density and Chain Length”, Int. J. Polym. Mater., 59 (11), 943-957 (2010).
M. E. Vilt and W. S. W. Ho, “Selective Separation of Cephalexin from Multiple Component Mixtures”, Ind. Eng. Chem. Res., 49 (23), 12022-12030 (2010).
M. E. Vilt and W. S. W. Ho, “In situ Removal of Cephalexin by Supported Liquid Membrane with Strip Dispersion”, J. Membr. Sci., 367 (1–2), 71-77 (2011).
R. Xing and W. S. W. Ho, “Crosslinked Polyvinylalcohol-Polysiloxane/Fumed Silica Mixed Matrix Membranes Containing Amines for CO₂/H₂ Separation”, J. Membr. Sci., 367 (1–2), 91-102 (2011).
H. Bai and W. S. W. Ho, “Recent Developments on Fuel Processing and Proton-Exchange Membranes for Fuel Cells”, Polym. Int., (wileyonlinelibrary.com), 60, 26-41 (2011). (invited).
W. Liu, X.-L. Yang, and W. S. W. Ho, “Preparation of Uniform-Sized Multiple Emulsions and Micro/Nano Particulates for Drug Delivery by Membrane Emulsification”, J. Pharm. Sci., 100 (1), 75-93 (2011).
Y. Zhao, K. Ramasubramanian, and W. S. W. Ho, “Carbon Dioxide-Selective Membranes for Hydrogen Purification for Fuel Cells”, Preprints of Symposia - American Chemical Society, Division of Fuel Chemistry, 56 (1), 343-346 (2011).
H. He, V. Grignol, V. Karpa, C. Yen, K. LaPerle , X. Zhang, N. B. Jones, M. I. Liang, G. B. Lesinski, W. S. W. Ho, W. E. Carson III, and L. J. Lee, “Use of a Nanoporous Biodegradable Miniature Device to Regulate Cytokine Release for Cancer Treatment”, J. Control. Release, 151 (3), 239-245 (2011).
W. V. Chiu, I.-S. Park, K. Shqau, J. C. White, M. C. Schillo, W. S. W. Ho, P. K. Dutta, and H. Verweij, “Post-synthesis Defect Abatement of Inorganic Membranes for Gas Separation”, J. Membr. Sci., 377 (1-2), 182-190 (2011).
K. Ramasubramanian and W. S. W. Ho, “Recent Developments on Membranes for Post-combustion Carbon Capture”, Curr. Opinion Chem. Eng., 1 (1), 47-54 (2011). (invited).
H. Bai and W. S. W. Ho, “Carbon Dioxide-Selective Membranes for High-Pressure Synthesis Gas Purification”, Ind. Eng. Chem. Res., 50 (21), 12152-12161 (2011).
H. Bai and W. S. W. Ho, “Carbon Dioxide-Selective Facilitated Transport Membranes for Hydrogen Purification”, in Production and Purification of Ultraclean Transportation Fuels, Y. H. Hu, X. L. Ma, E. B. Fox, and X. Guo, eds., ACS Symposium Series, Washington, DC, Vol. 1088, 115-141, Chap. 7 (2011). (invited).
M. E. Vilt and W. S. W. Ho, “Applications and Advances with Supported Liquid Membranes”, in Membrane Technologies and Applications, K. Mohanty and M. K. Purkait, eds., Taylor & France Group, LLC, Boca Raton, FL, Chap. 16, pp. 279-303 (2012). (invited).
B. Mandal and W. S. W. Ho, “Carbon Dioxide-Selective Membranes”, in Membrane Technologies and Applications, K. Mohanty and M. K. Purkait, eds., Taylor & France Group, LLC, Boca Raton, FL, Chap. 21, pp. 381-396 (2012). (invited).
W. S. W. Ho and K. Li, “Recent Advances in Separations”, Curr. Opinion Chem. Eng., 1 (2), 1-3 (2012).
Y. Zhao and W. S. W. Ho, “Steric Hindrance Effect on Amine Demonstrated in Solid Polymer Membranes for CO₂ Transport”, J. Membr. Sci., 415-416, 132-138 (2012).
K. Ramasubramanian, H. Verweij, and W. S. W. Ho, “Membrane Processes for Carbon Capture from Coal-Fired Power Plant Flue Gas: A Modeling and Cost Study”, J. Membr. Sci., 421-422, 299-310 (2012).
L. Zhao, P. C.-Y. Chang, and W. S. W. Ho, “High Flux Membranes for Brackish Water Desalination”, Preprints of Symposia - American Chemical Society, Division of Polymeric Materials: Science and Engineering, PMSE-11, 244th ACS National Meeting, Philadelphia, PA, August 19-23, 2012.
E. B. Fox, H. R. Colón-Mercado, Y. Chen, and W. S. W. Ho, “Development and Selection of Ionic Liquid Electrolytes for Hydroxide Conducting Polybenzimidazole Membranes in Alkaline Fuel Cells”, ACS Symposium Series, 1117 (Ionic Liquids), 129-143; in Ionic Liquids: Science and Applications, Visser et al., eds., ACS Symposium Series, Washington, DC, Chap. 5, pp. 129-143 (2012).
L. Zhao, P. C.-Y. Chang, C. Yen, and W. S. W. Ho, “High-Flux and Fouling-Resistant Membranes for Brackish Water Desalination”, J. Membr. Sci., 425-426, 1-10 (2013).
L. Zhao, P. C.-Y. Chang, and W. S. W. Ho, “High-Flux Reverse Osmosis Membranes Incorporated with Hydrophilic Additives for Brackish Water Desalination”, Desalination, 308, 225-232 (2013). (invited).
K. Ramasubramanian, Y. Zhao, and W. S. W. Ho, “CO₂ Capture and H₂ Purification: Prospects for CO₂-Selective Membrane Processes”, AIChE J., 59 (4), 1033-1045 (2013). (invited).
K. Ramasubramanian, Y. Zhao, and W. S. W. Ho, “AIChE J. Highlight: CO₂-Selective Membranes for Carbon Capture”, Chem. Eng. Prog., 109 (4), 20 (April 2013).
W. S. W. Ho and K. Li, “Recent Advances in Separations”, Curr. Opinion Chem. Eng., 2 (2), 207-208 (2013).
Y. Zhao and W. S. W. Ho, “CO₂-Selective Membranes Containing Sterically Hindered Amines for CO₂/H₂ Separation”, Ind. Eng. Chem. Res., 52, 8774-8782 (2013).
K. Ramasubramanian, M. Song, and W. S. W. Ho, “A Spiral-Wound Water-Gas-Shift Membrane Reactor for Hydrogen Purification”, Ind. Eng. Chem. Res., 52, 8829-8842 (2013).
L. Zhao and W. S. W. Ho, “Novel Reverse Osmosis Membranes Incorporated with a Hydrophilic Additive for Seawater Desalination”, J. Membr. Sci., 455, 44-54 (2014).
Y. Zhao, B. T. Jung, L. Ansaloni, and W. S. W. Ho, “Multiwalled Carbon Nanotube Mixed Matrix Membranes Containing Amines for High Pressure CO₂/H₂ Separation”, J. Membr. Sci., 459, 233-243 (2014).
W. S. W. Ho and K. Li, “Recent Developments on Separation Science and Technology”, Curr. Opinion Chem. Eng., 4, vii-ix (2014).
M. A. Severance, B. Wang, K. Ramasubramanian, L. Zhao, W. S. W. Ho, and P. K. Dutta, “Rapid Crystallization of Faujasitic Zeolites: Mechanism and Application to Zeolite Membrane Growth on Polymer Supports”, Langmuir, 30 (23), 6929-6937 (2014).
Z. Hao, Z. Wang, W. Zhang, and W. S. W. Ho, “Supported Liquid Membranes with Organic Dispersion for Recovery of Cephalexin”, J. Membr. Sci., 468, 90-97 (2014).
Z. Hao, M. E. Vilt, Z. Wang, W. Zhang, and W. S. W. Ho, “Supported Liquid Membranes with Feed Dispersion for Recovery of Cephalexin”, J. Membr. Sci., 468, 423-431 (2014).
H. Dong, L. Zhao, L. Zhang, H. L. Chen, C. J. Gao, and W. S. W. Ho, “High-Flux Reverse Osmosis Membranes Incorporated with NaY Zeolite Nanoparticles for Brackish Water Desalination”, J. Membr. Sci., 476, 373-383 (2015).
Z. Tong, V. K. Vakharia, M. Gasda, and W. S. W. Ho, “Water Vapor and CO₂ Transport through Amine-Containing Facilitated Transport Membranes”, React. Funct. Polym., 86, 111-116 (2015). (invited).
B. Wang, C. Sun, Y. Li, L. Zhao, W. S. W. Ho, P. K. Dutta, “Rapid Synthesis of Faujasite/Polyethersulfone Composite Membrane and Application for CO₂/N₂ Separation”, Microporous Mesoporous Mater., 208, 72-82 (2015).
W. Salim and W. S. W. Ho, “Recent Developments on Nanostructured Polymer-Based Membranes”, Curr. Opinion Chem. Eng., 8, 76-82 (2015). (invited).
V. K. Vakharia, K. Ramasubramanian, and W. S. W. Ho, “An Experimental and Modeling Study of CO₂-Selective Membranes for IGCC Syngas Purification”, J. Membr. Sci., 488, 56-66 (2015).
K. Ramasubramanian, M. A. Severance, P. K. Dutta, and W. S. W. Ho, “Fabrication of Zeolite/Polymer Multilayer Composite Membranes for CO₂ Capture: Deposition of Zeolite Particles on Polymer Supports”, J. Colloid Interf. Sci., 452, 203-214 (2015).
L. Ansaloni, Y. Zhao, B. T. Jung, K. Ramasubramanian, M. Giacinti Baschetti, and W. S. W. Ho, “Facilitated Transport Membranes Containing Amino-Functionalized Multi-Walled Carbon Nanotubes for High-Pressure CO₂ Separations”, J. Membr. Sci., 490, 18-28 (2015).
W. S. W. Ho and K. Li, “Recent Progress in Separation Science and Technology”, Curr. Opinion Chem. Eng., 8, vii-x (2015).
B. Wang, W. S. W. Ho, J. D. Figueroa, and P. K. Dutta, “Bendable Zeolite Membranes: Synthesis and Improved Gas Separation Performance”, Langmuir, 208, 72-82 (2015).
Y. Chen, B. Wang, L. Zhao, P. Dutta, and W. S. W. Ho, “New Pebax^®/Zeolite Y Composite Membranes for CO₂ Capture from Flue Gas”, J. Membr. Sci., 495, 415-423 (2015).
V. K. Vakharia and W. S. W. Ho, “Separation and Purification of Hydrogen Using CO₂-Selective Facilitated Transport Membranes”, in “Hydrogen Production from Renewable Resources”, Zhen Fang, Richard L. Smith, Jr., and Xinhua Qi, eds., Springer Book Series – Biofuels and Biorefineries, Springer, Dordrecht, Germany, Chap. 12, pp. 315-338 (2015). (invited).
W. Salim, Z. Tong, V. Vakharia, D. Wu, and W. S. W. Ho, “New Scale-up Membranes for CO₂ Capture and Separation”, Proceedings/Program Book of CHEMCON 2015 (Annual Meeting of the Indian Institute of Chemical Engineers), Guwahati, Assam, India, Dec. 27-30, 2015, pp. 61-67 (2015). (invited).
Y. Chen, L. Zhao, B. Wang, P. Dutta, and W. S. W. Ho, “Amine-containing Polymer/Zeolite Y Composite Membranes for CO₂/N₂ Separation”, J. Membr. Sci., 497, 21-28 (2016).
L. Zhao, Y. Chen, B. Wang, C. Sun, S. Chakraborty, K. Ramasubramanian, P. K. Dutta, and W. S. W. Ho, “Multilayer Polymer/Zeolite Y Composite Membrane Structure for CO₂ Capture from Flue Gas”, J. Membr. Sci., 498, 1-13 (2016).
H. Bai and W. S. W. Ho, “Proton-Exchange Membranes for Fuel Cells”, in “Encyclopedia of Membranes”, Enrico Drioli and Lidietta Giorno, eds., Springer-Verlag Berlin Heidelberg, Germany, doi:10.1007/978-3-642-40872-4_1309-3 (2016). (invited).
D. Wu, L. Zhao, V. K. Vakharia, W. Salim, and W. S. W. Ho, “Synthesis and Characterization of Nanoporous Polyethersulfone Membrane as Support for Composite Membrane in CO₂ Separation: From Lab to Pilot Scale”, J. Membr. Sci., 510, 58-71 (2016).
W. S. W. Ho and K. Li, “Recent Advances in Separation Science and Technology”, Curr. Opinion Chem. Eng., 12, vii-xi (2016).
Y. Chen and W. S. W. Ho, “High-Molecular-Weight Polyvinylamine/Piperazine Glycinate Membranes for CO₂ Capture from Flue Gas”, J. Membr. Sci., 514, 376-384 (2016).
Z. Tong and W. S. W. Ho, “Facilitated Transport Membranes for CO₂ Separation and Capture”, Sep. Sci. Technol., doi:10.1080/01496395.2016.1217885, 52 (2), 156-167 (2017). (invited).
Z. Jia, G. Wu, D. Wu, Z. Tong, and W. S. W. Ho, “Preparation of Ultra-Stable ZIF-8 Dispersions in Water and Ethanol”, J. Porous Mater., doi:10.1007/s10934-017-0405-2, 24 (6), 1655-1660 (2017).
V. Vakharia, W. Salim, M. Gasda, and W. S. W. Ho, “Oxidatively Stable Membranes for CO₂ Separation and H₂ Purification”, J. Membr. Sci., doi:10.1016/j.memsci.2017.03.037, 533, 220-228 (2017).
D. Wu, C. Sun, P. K. Dutta, and W. S. W. Ho, “SO₂ Interference on Separation Performance of Amine-Containing Facilitated Transport Membranes for CO₂ Capture from Flue Gas”, J. Membr. Sci., doi:10.1016/j.memsci.2017.04.003, 534, 33-45 (2017).
Z. Hao, Q. Li, W. S. W. Ho, and N. N. Li, “Liquid Membranes”, in Comprehensive Membrane Science and Technology, Enrico Drioli, Lidietta Giorno, and E. Fontananova, eds., 2nd edition, Vol. 2, pp. 411-439, Chap. 2.14, Elsevier, Oxford (2017). (invited).
Z. Tong and W. S. W. Ho, “New Sterically Hindered Polyvinylamine Membranes for CO₂ Separation and Capture”, J. Membr. Sci., doi:10.1016/j.memsci.2017.08.057, 543, 202-211 (2017).
V. Vakharia, W. Salim, D. Wu, Y. Han, Y. Chen, L. Zhao, and W. S. W. Ho, “Scale-up of Amine-Containing Thin-Film Composite Membranes for CO₂ Capture from Flue Gas”, J. Membr. Sci., doi:10.1016/j.memsci.2018.03.074, 555, 379-387 (2018).
W. Salim, V. Vakharia, Y. Chen, D. Wu, Y. Han, and W. S. W. Ho, “Fabrication and Field Testing of Spiral-Wound Membrane Modules for CO₂ Capture from Flue Gas”, J. Membr. Sci., doi:10.1016/j.memsci.2018.04.001, 556, 126-137 (2018).
W. Salim, V. Vakharia, K. K. Chen, M. Gasda, and W. S. W. Ho, “Oxidatively Stable Borate-Containing Membranes for H₂ Purification for Fuel Cells”, J. Membr. Sci., doi:10.1016/j.memsci.2018.05.020, 562, 9-17 (2018).
D. Wu, Y. Han, L. Zhao, W. Salim, V. Vakharia, and W. S. W. Ho, “Scale-up of Zeolite-Y/Polyethersulfone Substrate for Composite Membrane Fabrication in CO₂ Separation”, J. Membr. Sci., doi:10.1016/j.memsci.2018.05.021, 562, 56-66 (2018).
Z. Hao and W. S. W. Ho “Supported Liquid Membranes in Pharmaceutics and Biotechnology”, in Current Trends and Future Developments on (Bio-) Membranes, Catherine Charcosset and Angelo Basile, eds., Chap. 9, pp. 259-289, doi:10.1016/B978-0-12-813606-5.00009-9, Elsevier, Oxford (2018). (invited).
D. Wu, Y. Han, W. Salim, K. K. Chen, J. Li, and W. S. W. Ho, “Hydrophilic and Morphological Modification of Nanoporous Polyethersulfone Substrates for Composite Membranes in CO₂ Separation”, J. Membr. Sci., doi:10.1016/j.memsci.2018.08.059, 565, 439-449 (2018).
W. Salim and W. S. W. Ho, “Hydrogen Purification with CO₂-Selective Facilitated Transport Membranes”, Curr. Opinion Chem. Eng., doi:10.1016/j.coche.2018.09.004, 21, 96-102 (2018). (invited).
Y. Han, D. Wu, and W. S. W. Ho, “Nanotube-reinforced Facilitated Transport Membrane for CO₂/N₂ Separation with Vacuum Operation”, J. Membr. Sci., doi:10.1016/j.memsci.2018.08.061, 567, 261-271 (2018).
C. E. Bien, K. K. Chen, S.-C. Chien, B. R. Reiner, L.-C. Lin, C. R. Wade, and W. S. W. Ho, “Bioinspired Metal-Organic Framework for Trace CO₂ Capture”, J. Am. Chem. Soc., doi:10.1021/jacs.8b06109, 140, 122662-12666 (2018).
Y. Han and W. S. W. Ho, “Recent Advances in Polymeric Membranes for CO₂ Capture”, Chin. J. Chem. Eng., doi:10.1016/j.cjche.2018.07.010, 26, 2238-2254 (2018). (invited).
W. Salim, Y. Han, V. Vakharia, D. Wu, D. J. Wheeler, and W. S. W. Ho, “Scale-up of Amine-Containing Membranes for Hydrogen Purification for Fuel Cells”, J. Membr. Sci., doi:10.1016/j.memsci.2018.12.022, 573, 465-475 (2019).
Y. Han, D. Wu, and W. S. W. Ho, “Simultaneous Effects of Temperature and Vacuum and Feed Pressures on Facilitated Transport Membrane for CO₂/N₂ Separation”, J. Membr. Sci., doi:10.1016/j.memsci.2018.12.028, 573, 476-484 (2019).
Y. Han, W. Salim, K. Chen, D. Wu, and W. S. W. Ho, “Field Trial of Spiral-Wound Facilitated Transport Membrane Module for CO₂ Capture from Flue Gas”, J. Membr. Sci., doi:10.1016/j.memsci.2019.01.024, 575, 242-251 (2019).
Q. Lyu, X. Deng, S. Hu, L.-C. Lin, and W. S. W. Ho, “Exploring the Potential of Defective UiO-66 as Reverse Osmosis Membranes for Desalination”, J. Phys. Chem. C, doi:10.1021/acs.jpcc.9b01765, 123, 16118-16126 (2019).
Y. Han and W. S. W. Ho, “Recent Developments on Polymeric Membranes for CO₂ Capture from Flue Gas”, J. Polym. Eng., doi:10.1515/polyeng-2019-0298, published online (12/27/2019), 40 (6), 529–542 (2020). (invited)
Y. Han and W. S. W. Ho, “Design of Amine-Containing CO₂-Selective Membrane Process for Carbon Capture from Flue Gas”, Ind. Eng. Chem. Res., doi:10.1021/acs.iecr.9b04839, 59 (12), 5340-5350 (2020). (invited)
K. K. Chen, W. Salim, Y. Han, D. Wu, and W. S. W. Ho, “Fabrication and Scale-up of Multi-Leaf Spiral-Wound Membrane Modules for CO₂ Capture from Flue Gas”, J. Membr. Sci., doi:10.1016/j.memsci.2019.117504, 595, 117504 (2020).
Y. Han and W. S. W. Ho, “Recent Advances in Polymeric Facilitated Transport Membranes for Carbon Dioxide Separation and Hydrogen Purification”, J. Polym. Sci., doi:10.1002/pol.20200187, 58, 2435-2449 (2020). (invited)
R. Pang, K. K. Chen, Y. Han, and W. S. W. Ho, “Highly Permeable Polyethersulfone Substrates with Bicontinuous Structure for Composite Membranes in CO₂/N₂ Separation”, J. Membr. Sci., doi:10.1016/j.memsci.2020.118443, 612, 118443 (2020). (Editor’s Choice Article for June 2020)
K. K. Chen, W. Salim, Y. Han, M. Gasda, and W. S. W. Ho, “Fluoride- and Hydroxide-Containing CO₂-Selective Membranes for Improving H₂ Utilization of Solid Oxide Fuel Cells”, J. Membr. Sci., doi:10.1016/j.memsci.2020.118484, 612, 118484 (2020).
Y. Yang, Y. Han, R. Pang, and W. S. W. Ho, “Amine-Containing Membranes with Functionalized Multi-Walled Carbon Nanotubes for CO₂/H₂ Separation”, Membranes, doi:10.3390/membranes10110333, 10 (11), 333 (2020). (invited)
Y. Han, Y. Yang, and W. S. W. Ho, “Recent Progress in the Engineering of Polymeric Membranes for CO₂ Capture from Flue Gas”, Membranes, doi:10.3390/membranes10110365, 10 (11), 365 (2020). (invited)
X. Deng, C. Zou, Y. Han, L.-C. Lin, and W. S. W. Ho, “Computational Evaluation of Carriers in Facilitated Transport Membranes for Post-Combustion Carbon Capture”, J. Phys. Chem. C, doi:10.1021/acs.jpcc.0c07627, 124, 25322-25330 (2020).
Y. Han, Y. Yang, and W. S. W. Ho, “Polymeric Membranes for CO₂ Capture”, in Scholarly Community Encyclopedia, http://www.encyclopedia.pbu (2020). (invited)
W. S. W. Ho, “Foreword”, in A. K. Pabby, S. R. Wickramasinghe, K. K. Sirkar, and A.-M. Sastre, eds., Hollow Fiber Membrane Contactors: Module Fabrication, Design and Operation, and Potential Applications, CRC Press, Taylor & Francis Group, Boca Raton, FL, p. vii, (online 2020) (2021). (invited)
K. K. Chen, Y. Han, Z. Tong, M. Gasda, and W. S. W. Ho, “Membrane Processes for CO₂ Removal and Fuel Utilization Enhancement for Solid Oxide Fuel Cells”, J. Membr. Sci., doi:10.1016/j.memsci.2020.118846 (2020), 620, 118846 (2021).
K. K. Chen, Y. Han, Z. Zhang, and W. S. W. Ho, “Enhancing Membrane Performance for CO₂ Capture from Flue Gas with Ultrahigh MW Polyvinylamine”, J. Membr. Sci., doi:10.1016/j.memsci.2021.119215, 628, 119215 (2021).
Y. Han and W. S. W. Ho, “Polymeric Membranes for CO₂ Separation and Capture”, J. Membr. Sci., doi:10.1016/j.memsci.2021.119244, 628, 119244 (2021). (invited)
Y. Han and W. S. W. Ho, “Facilitated Transport Membranes for H₂ Purification from Coal-Derived Syngas: A Techno-Economic Analysis”, J. Membr. Sci., doi:10.1016/j.memsci.2021.119549, 636, 119549 (2021). (invited)

L. T. C. Lee, W. S. W. Ho, and K. J. Liu, “Novel High Diffusivity Membranes”, U. S. Patent 3,951,789 (1976).
L. T. C. Lee, W. S. W. Ho, and K. J. Liu, “Membrane Solvent Extraction”, U. S. Patent 3,956,112 (1976).
W. S. W. Ho, L. T. C. Lee, and K. J. Liu, “Membrane Hydrometallurgical Extraction Process”, U. S. Patent 3,957,504 (1976).
G. Doyle, R. L. Pruett, D. W. Savage, and W. S. W. Ho, “Separation of Olefin Mixtures by Cu (I) Complexation”, U. S. Patent 4,471,152 (1984).
E. L. Stogryn, W. S. W. Ho, A. A. Montagna, and G. Sartori, “Process for Preparing Secondary Aminoether Alcohols”, U. S. Patent 4,487,967 (1984).
W. S. W. Ho and J. Bock, “Oxidation-Flocculation Solids Removal from Wet Process Phosphoric Acid”, Canadian Patent 1,185,766 (1985).
F. J. Heinzelmann, N. S. Rothblatt, J. P. Glass, G. R. Say, G. R. Chludzinski, G. Sartori, and W. S. W. Ho, “Absorbent Composition Containing a Severely Hindered Amino Compound and an Amine Salt and Process for the Absorption of H₂S Using the Same”, U. S. Patent 4,618,481 (1986).
E. L. Stogryn, W. S. W. Ho, and A. A. Montagna, “Process for Preparing Di-Amino- Polyalkenyl Ethers”, U. S. Patent 4,665,195 (1987).
L. J. Shulik, G. Sartori, W. S. W. Ho, W. A. Thaler, and G. E. Milliman, “Primary Hindered Aminoacid Compositions for Promoted Acid Gas Scrubbing Process”, U. S. Patent 4,759,866 (1988).
W. S. W. Ho and G. Sartori, “Addition of Severely-Hindered Amine Salts and/or Aminoacids to Non-Hindered Amine Solutions for the Absorption of H₂S”, U. S. Patent 4,892,674 (1990).
W. S. W. Ho, E. L. Stogryn, and G. Sartori, “Absorbent Composition Containing a Severely-Hindered Amine Mixture for the Absorption of H₂S”, U. S. Patent 4,894,178 (1990).
G. Sartori, W. S. W. Ho, and E. L. Stogryn, “Absorbent Composition Containing a Tertiary Amino Azabicyclic Alcohol and an Amine Salt and/or a Severely-Hindered Aminoacid and Process for the Absorption of H₂S Using the Same”, U. S. Patent 4,894,179 (1990).
G. Sartori and W. S. W. Ho, “Addition of Severely-Hindered Aminoacids to Severely- Hindered Amines for the Absorption of H₂S”, U. S. Patent 4,895,670 (1990).
L. J. Shulik, G. Sartori, W. S. W. Ho, W. A. Thaler, and G. E. Milliman, “Primary Hindered Aminoacids for Promoted Acid Gas Scrubbing Process”, U. S. Patent 4,919,904 (1990).
W. S. W. Ho, G. Sartori, W. A. Thaler, and D. C. Dalrymple, “Polyimide/Aliphatic Polyester Copolymers”, U. S. Patent 4,944,880 (1990).
W. A. Thaler, W. S. W. Ho, and G. Sartori, “Crosslinked Copolymers of Aliphatic Polyester Diols and Dianhydrides”, U. S. Patent 4,946,594 (1990).
W. S. W. Ho, G. Sartori, and E. L. Stogryn, “Absorbent Composition Containing a Severely-Hindered Amine Mixture with Amine Salts and/or Aminoacid Additives for the Absorption of H₂S”, U. S. Patent 4,961,873 (1990).
G. Sartori and W. S. W. Ho, “Polyester Membranes for Aromatics/Saturates Separation”, U. S. Patent 4,976,868 (1990).
W. S. W. Ho, G. Sartori, W. A. Thaler, and D. C. Dalrymple, “Polyimide/Aliphatic Polyester Copolymers”, U. S. Patent 4,990,275 (1991).
W. A. Thaler, W. S. W. Ho, and G. Sartori, “Crosslinked Copolymers of Aliphatic Polyester Diols and Dianhydrides”, U. S. Patent 4,997,906 (1991).
G. Sartori, W. S. W. Ho, and R. E. Noone, “Polyphthalatecarbonate Membranes for Aromatics/Saturates Separation”, U. S. Patent 5,012,035 (1991).
G. Sartori, W. S. W. Ho, and R. E. Noone, “Polyarylate Membranes for Aromatics/Saturates Separation”, U. S. Patent 5,012,036 (1991).
W. S. W. Ho, “Polymeric Membrane and Process for Separating Aliphatically Unsaturated Hydrocarbons”, U. S. Patent 5,015,268 (1991).
G. Sartori, W. S. W. Ho, D. W. Savage, R. E. Noone, and R. P. Mastondrea, “Non-porous Polycarbonate Membranes for Separation of Aromatics from Saturates”, U. S. Patent 5,019,666 (1991).
W. S. W. Ho, G. Sartori, W. A. Thaler, B. H. Ballinger, D. C. Dalrymple, and R. P. Mastondrea, “Halogenated Polyurethanes”, U. S. Patent 5,028,685 (1991).
G. Sartori, W. S. W. Ho, R. E. Noone, and A. D. Cohen, “Sulfonated Polysulfone Membranes for Aromatics/Saturates Separation”, U. S. Patent 5,055,631 (1991).
W. S. W. Ho, “Polymeric Membrane and Process for Separation of Aliphatically Unsaturated Hydrocarbons”, U. S. Patent 5,062,866 (1991).
W. S. W. Ho, G. Sartori, W. A. Thaler, B. H. Ballinger, D. C. Dalrymple, and R. P. Mastondrea, “Halogenated Polyurethanes”, U. S. Patent 5,093,003 (1992).
G. Sartori, W. S. W. Ho, and B. H. Ballinger, “Saturated Polyesters and Crosslinked Membranes therefrom for Aromatics/Saturates Separation”, U. S. Patent 5,128,439 (1992).
G. Sartori, W. S. W. Ho, and R. E. Noone, “Unsaturated Polyesters and Crosslinked Membranes therefrom for Aromatics/Saturates Separation”, U. S. Patent 5,138,023 (1992).
G. Sartori, W. S. W. Ho, and R. E. Noone, “Polysulfone Membranes for Aromatics/Saturates Separation”, U. S. Patent 5,159,130 (1992).
G. Sartori, W. S. W. Ho, and B. H. Ballinger, “Saturated Polyesters and Crosslinked Membranes therefrom for Aromatics/Saturates Separation”, U. S. Patent 5,177,296 (1993).
G. Sartori, W. S. W. Ho, and R. E. Noone, “Unsaturated Polyesters and Crosslinked Membranes therefrom for Aromatics/Saturates Separation”, U. S. Patent 5,180,496 (1993).
C. P. Darnell, R. J. Koveal, T. J. Chen, and W. S. W. Ho, “Recovery of Alcohols from n-Paraffins by Pervaporation”, U. S. Patent 5,230,801 (1993).
W. S. W. Ho, G. Sartori, and S. J. Han, “Polyimide/Aliphatic Polyester Copolymers without Pendent Carboxylic Acid Groups”, U. S. Patent 5,241,039 (1993).
J. L. Feimer, C. P. Darnell, and W. S. W. Ho, “Separation of Alcohol from Alcohol / Ether / Olefin / Non-linear Hydrocarbon Mixtures Using Polyester or Polyester Copolymer Membranes”, U. S. Patent 5,294,344 (1994).
G. Sartori, W. S. W. Ho, R. E. Noone, and B. H. Ballinger, “Fluorinated Polyolefin Membranes for Aromatics/Saturates Separation”, U. S. Patent 5,396,019 (1995).
W. S. W. Ho, G. Sartori, W. A. Thaler, and D. C. Dalrymple, “Diepoxide Crosslinked / Esterified Polyimide-Aliphatic Polyester Copolymers”, U. S. Patent 5,550,199 (1996).
W. A. Thaler, G. Sartori, W. S. W. Ho, L. J. Shulik, and G. E. Milliman, “Primary Hindered Aminoacids for Promoted Acid Gas Scrubbing Process”, U. S. Patent 5,602,279 (1997).
W. S. W. Ho, “Membranes Comprising Salts of Aminoacids in Hydrophilic Polymers”, U. S. Patent 5,611,843 (1997).
W. S. W. Ho, G. Sartori, W. A. Thaler, and D. C. Dalrymple, “Separating Aromatics from Non-Aromatics by Polyimide-Polyester Membrane”, U. S. Patent 5,670,052 (1997).
W. S. W. Ho, G. Sartori, W. A. Thaler, and D. C. Dalrymple, “Polyimide Copolymers Containing Polycarbonate Soft Segments”, U. S. Patent 5,756,643 (1998).
W. S. W. Ho, “Membranes Comprising Aminoacid Salts in Polyamine Polymers and Blends”, U. S. Patent 6,099,621 (2000).
W. S. W. Ho, “Supported Liquid Membrane Process for Chromium Removal and Recovery”, U. S. Patent 6,171,563 (2001).
D. W. Savage, W. S. W. Ho, and P. Calcavecchio, and E. N. Drake, “Biowall for Groundwater Remediation”, U. S. Patent 6,224,770 (2001).
W. S. W. Ho and B. Wang, “Combined Supported Liquid Membrane / Strip Dispersion Process for the Removal and Recovery of Metals: Dialkyl Monothiophosphoric Acids and Their Use as Extractants”, U. S. Patent 6,291,705 (2001).
H.-C. Wang, C. S. Chee, and W. S. W. Ho, “Phase Transfer Process with Catalyst Recovery”, U. S. Patent 6,300,431 (2001).
W. S. W. Ho, “Combined Supported Liquid Membrane / Strip Dispersion Process for the Removal and Recovery of Radionuclides and Metals”, U. S. Patent 6,328,782 (2001).
W. S. W. Ho, “Combined Supported Liquid Membrane / Strip Dispersion Process for the Removal and Recovery of Metals”, U. S. Patent 6,350,419 (2002).
W. S. W. Ho, “Combined Supported Liquid Membrane / Strip Dispersion Process for the Removal and Recovery of Penicillin and Organic Acids”, U. S. Patent 6,433,163 (2002).
W. S. W. Ho, “CO₂-Selective Membrane Process and System for Reforming a Fuel to Hydrogen for a Fuel Cell”, U. S. Patent 6,579,331 (2003).
W. S. W. Ho, “Combined Supported Liquid Membrane / Strip Dispersion Process for the Removal and Recovery of Radionuclides”, U. S. Patent 6,696,589 (2004).
S. Randhava, W. S. W. Ho, R. L. Kao, and E. H. Camara, “Dynamic Sulfur Tolerant Process and System with Inline Acid Gas-Selective Removal for Generating Hydrogen for Fuel Cells”, U. S. Patent 6,984,372 (2006).
W. S. W. Ho, “CO₂-Selective Membranes Containing Amino Groups”, U. S. Patent 7,011,694 (March 14, 2006).
W. S. W. Ho, “Water Permeable Membranes and Methods of Making Water Permeable Membranes”, U. S. Patent 8,196,754 (June 12, 2012).
W. S. W. Ho, “Membranes, Methods of Making Membranes, and Methods of Separating Gases Using Membranes”, U. S. Patent 8,277,932 (October 2, 2012).
W. S. W. Ho, H. Verweij, K. Shqua, and K. Ramasubramanian, “Systems, Compositions, and Methods for Fluid Purification”, U. S. Patent 9,216,390 (December 22, 2015).
M. Gasda, A. Ballantine, C. Karuppaiah, and W. S. W. Ho, “Carbon Dioxide Separator, Fuel Cell System Including Same, and Method of Operating Fuel Cell System”, U. S. Patent 10,186,724 (January 22, 2019).
W. S. W. Ho, W. Salim, and V. Vakharia, “Membranes for Gas Separation”, U. S. Patent 10,213,747 (February 26, 2019).
W. S. W. Ho, P. K. Dutta, K. Ramasubramanian, and M. A. Severance, “Composite Membranes for Separation of Gases”, U. S. Patent 10,322,379 (June 18, 2019).
W. S. W. Ho, Y. Chen, and Z. Tong, “Polymer Membranes for Separation of Gases”, U. S. Patent 10,835,847 (November 17, 2020).
W. S. W. Ho, V. Vakharia, and W. Salim, “Borate-Containing Membranes for Gas Separation”, U. S. Patent 11,000,810 (May 11, 2021).

W.S. Winston Ho Laboratory

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