期刊
JOURNAL OF MEMBRANE SCIENCE
卷 491, 期 -, 页码 132-137出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2015.05.002
关键词
Nanofiltration; Regenerated cellulose membrane; Trimethylsilyl cellulose; Zero NaCl rejection; Organic molecule separation
资金
- King Abdullah University of Science and Technology (KAUST)
We report a new synthetic route of fabricating regenerated cellulose nanofiltration membranes. The membranes are composite membranes with a thin selective layer of cellulose, which was prepared by regeneration of trimethylsilyl cellulose (a hydrophobic cellulose derivative) film followed by cross-linking. Filtration experiments using mixtures of sugar and sodium chloride showed that solutes above 300 Da were highly rejected whereas practically no rejection was observed for NaCl. This is a big advantage for a complete desalination as the existing commercial nanofiltration membranes typically exhibit NaCl rejection in the range of 30-60%. Membranes with zero NaCl rejection are required for recovery and purification applications in food, chemical and pharmaceutical industry. (C) 2015 Elsevier B.V. All rights reserved.
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