期刊
WATER RESEARCH
卷 35, 期 13, 页码 3260-3264出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0043-1354(01)00020-3
关键词
nanofiltration; defluorination; selective demineralization; transfer mechanisms
Nanofiltration is generally used to separate monovalent ions from divalent ions, but it is also possible to separate ions of the same valency by careful application of the transfer mechanisms involved. Analysis of the retention of halide salts reveals that small ions like fluoride are the best retained, and that this is even more marked under reduced pressure when selectivity is greatest. The selectivity desalination of fluorinated brackish water is hence feasible and drinking water can be produced directly at much lower cost than using reverse osmosis by optimizing the pressure for the type of water treated. (C) 2001 Elsevier Science Ltd. All rights reserved.
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