5th Annual International Conference on Material Science and Environmental Engineering | |
Layer-by-Layer Assembly for Preparation of High-Performance Forward Osmosis Membrane | |
材料科学;生态环境科学 | |
Yang, Libin^1 ; Zhang, Jinglong^1 ; Song, Peng^1 ; Wang, Zhan^1 | |
Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing, China^1 | |
关键词: Forward osmosis; Forward osmosis membrane; Forward osmosis membranes; Layer by layer; Layer-by-layer approaches; Layer-by-layer assemblies; Pressure-retarded osmosis; Structure and performance; | |
Others : https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012032/pdf DOI : 10.1088/1757-899X/301/1/012032 |
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来源: IOP | |
【 摘 要 】
Forward osmosis (FO) membrane with high separation performance is needed to promote its practical applications. Herein, layer-by-layer (LbL) approach was used to prepare a thin and highly cross-linked polyamide layer on a polyacrylonitrile substrate surface to prepare a thin-film composite forward osmosis (TFC-FO) membrane with enhanced FO performance. The effects of monomer concentrations and assembly cycles on the performance of the TFC-FO membranes were systematically investigated. Under the optimal preparation condition, TFC-FO membrane achieved the best performance, exhibiting the water flux of 14.4/6.9 LMH and reverse salt flux of 7.7/3.8 gMH under the pressure retarded osmosis/forward osmosis (PRO/FO) mode using 1M NaCl as the draw against a DI-water feed, and a rejection of 96.1% for 2000 mg/L NaCl aqueous solution. The result indicated that layer-by-layer method was a potential method to regulate the structure and performance of the TFC-FO membrane.
【 预 览 】
Files | Size | Format | View |
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Layer-by-Layer Assembly for Preparation of High-Performance Forward Osmosis Membrane | 755KB | download |