High Performance Thin-Film Composite Forward Osmosis Membrane

Handle URI:
http://hdl.handle.net/10754/598476
Title:
High Performance Thin-Film Composite Forward Osmosis Membrane
Authors:
Yip, Ngai Yin; Tiraferri, Alberto; Phillip, William A.; Schiffman, Jessica D.; Elimelech, Menachem
Abstract:
Recent studies show that osmotically driven membrane processes may be a viable technology for desalination, water and wastewater treatment, and power generation. However, the absence of a membrane designed for such processes is a significant obstacle hindering further advancements of this technology. This work presents the development of a high performance thin-film composite membrane for forward osmosis applications. The membrane consists of a selective polyamide active layer formed by interfacial polymerization on top of a polysulfone support layer fabricated by phase separation onto a thin (40 μm) polyester nonwoven fabric. By careful selection of the polysulfone casting solution (i.e., polymer concentration and solvent composition) and tailoring the casting process, we produced a support layer with a mix of finger-like and sponge-like morphologies that give significantly enhanced membrane performance. The structure and performance of the new thin-film composite forward osmosis membrane are compared with those of commercial membranes. Using a 1.5 M NaCl draw solution and a pure water feed, the fabricated membranes produced water fluxes exceeding 18 L m2-h-1, while consistently maintaining observed salt rejection greater than 97%. The high water flux of the fabricated thin-film composite forward osmosis membranes was directly related to the thickness, porosity, tortuosity, and pore structure of the polysulfone support layer. Furthermore, membrane performance did not degrade after prolonged exposure to an ammonium bicarbonate draw solution. © 2010 American Chemical Society.
Citation:
Yip NY, Tiraferri A, Phillip WA, Schiffman JD, Elimelech M (2010) High Performance Thin-Film Composite Forward Osmosis Membrane. Environ Sci Technol 44: 3812–3818. Available: http://dx.doi.org/10.1021/es1002555.
Publisher:
American Chemical Society (ACS)
Journal:
Environmental Science & Technology
Issue Date:
15-May-2010
DOI:
10.1021/es1002555
PubMed ID:
20408540
Type:
Article
ISSN:
0013-936X; 1520-5851
Sponsors:
The work was supported by a Graduate Fellowship (to N.Y.Y.) made by the Environment and Water Industrial Development Council of Singapore; the WaterCAMPWS, a Science and Technology Center of Advanced Materials for the Purification of Water with Systems under the National Science Foundation Grant No. CTS-0120978; Oasys Water Inc.; and the KAUST-Cornell Center for Energy and Sustainability. We thank Eric Hoek and his research group at UCLA for useful guidance on protocols for interfacial polymerization.
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Full metadata record

DC FieldValue Language
dc.contributor.authorYip, Ngai Yinen
dc.contributor.authorTiraferri, Albertoen
dc.contributor.authorPhillip, William A.en
dc.contributor.authorSchiffman, Jessica D.en
dc.contributor.authorElimelech, Menachemen
dc.date.accessioned2016-02-25T13:21:25Zen
dc.date.available2016-02-25T13:21:25Zen
dc.date.issued2010-05-15en
dc.identifier.citationYip NY, Tiraferri A, Phillip WA, Schiffman JD, Elimelech M (2010) High Performance Thin-Film Composite Forward Osmosis Membrane. Environ Sci Technol 44: 3812–3818. Available: http://dx.doi.org/10.1021/es1002555.en
dc.identifier.issn0013-936Xen
dc.identifier.issn1520-5851en
dc.identifier.pmid20408540en
dc.identifier.doi10.1021/es1002555en
dc.identifier.urihttp://hdl.handle.net/10754/598476en
dc.description.abstractRecent studies show that osmotically driven membrane processes may be a viable technology for desalination, water and wastewater treatment, and power generation. However, the absence of a membrane designed for such processes is a significant obstacle hindering further advancements of this technology. This work presents the development of a high performance thin-film composite membrane for forward osmosis applications. The membrane consists of a selective polyamide active layer formed by interfacial polymerization on top of a polysulfone support layer fabricated by phase separation onto a thin (40 μm) polyester nonwoven fabric. By careful selection of the polysulfone casting solution (i.e., polymer concentration and solvent composition) and tailoring the casting process, we produced a support layer with a mix of finger-like and sponge-like morphologies that give significantly enhanced membrane performance. The structure and performance of the new thin-film composite forward osmosis membrane are compared with those of commercial membranes. Using a 1.5 M NaCl draw solution and a pure water feed, the fabricated membranes produced water fluxes exceeding 18 L m2-h-1, while consistently maintaining observed salt rejection greater than 97%. The high water flux of the fabricated thin-film composite forward osmosis membranes was directly related to the thickness, porosity, tortuosity, and pore structure of the polysulfone support layer. Furthermore, membrane performance did not degrade after prolonged exposure to an ammonium bicarbonate draw solution. © 2010 American Chemical Society.en
dc.description.sponsorshipThe work was supported by a Graduate Fellowship (to N.Y.Y.) made by the Environment and Water Industrial Development Council of Singapore; the WaterCAMPWS, a Science and Technology Center of Advanced Materials for the Purification of Water with Systems under the National Science Foundation Grant No. CTS-0120978; Oasys Water Inc.; and the KAUST-Cornell Center for Energy and Sustainability. We thank Eric Hoek and his research group at UCLA for useful guidance on protocols for interfacial polymerization.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleHigh Performance Thin-Film Composite Forward Osmosis Membraneen
dc.typeArticleen
dc.identifier.journalEnvironmental Science & Technologyen
dc.contributor.institutionYale University, New Haven, United Statesen
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