期刊
JOURNAL OF MEMBRANE SCIENCE
卷 413, 期 -, 页码 82-90出版社
ELSEVIER
DOI: 10.1016/j.memsci.2012.04.021
关键词
Polydopamine; Surface modification; Membrane fouling; Fouling resistant modification; Water purification
资金
- National Science Foundation
- International Research and Education in Engineering (IREE) fellowship [CBET 0553957]
- Advanced Hydro, Inc.
- NSF [CBET-0931761]
- Department of Energy [DE-AC26-07NT2677]
- Gas Technologies Institute
- SMBA project [31200900000560001]
- U.S. National Science Foundation [0423914]
- Korea Ministry of Environment Converging Technology Project [202-101-008]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0931761] Funding Source: National Science Foundation
Surface deposition of polydopamine, PD, using facile aqueous-based chemistry at mild reaction conditions, was accomplished on reverse osmosis, nanofiltration, ultrafiltration, and microfiltration membranes. This surface treatment not only retained much of the membranes' intrinsic pure water permeability, but also improved the fouling resistance of polypropylene microfiltration (MF), poly(tetrafluoroethylene) MF, poly(vinylidene fluoride) MF, poly(arylene ether sulfone) ultrafiltration (UF), polysulfone UF, polyamide (PA) nanofiltration, and PA reverse osmosis membranes, as measured using oil/water emulsion filtration. To demonstrate scalability of this approach, PD was applied to, and improved the fouling resistance of, membrane modules. Following PD deposition, membranes could be further modified by grafting fouling-resistant macromolecules, such as poly(ethylene glycol), to further improve fouling resistance of MF membranes. (C) 2012 Elsevier B.V. All rights reserved.
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