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Preparation of a novel poly(ether sulfone) adsorptive ultrafiltration membrane containing a crosslinked quaternary chitosan salt and chromate removal
Author(s) -
Huang ZhengQing,
Yang TianQi,
Zhou KaiMei,
Chen JunPing,
Wei Peng,
Zhang Zhi,
Xu HongTao
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45198
Subject(s) - membrane , ultrafiltration (renal) , hexavalent chromium , langmuir adsorption model , sulfone , polymer chemistry , adsorption , chromate conversion coating , ether , salt (chemistry) , nuclear chemistry , chitosan , chemistry , materials science , chromium , chromatography , organic chemistry , biochemistry
ABSTRACT To improve the removal performance of low‐concentration hexavalent chromium [Cr(VI)] in the ultrafiltration (UF) process, adsorptive UF membranes were prepared from suspensions consisting of poly(ether sulfone), N,N ‐dimethylacetamide, poly(vinyl pyrrolidone), and crosslinked quaternary chitosan salt (CQS). The results show that the contact angle of the membrane increased from 67 to 83° when the content of CQS was changed from 0 to 10 wt %. Meanwhile, the initial rejection of bovine serum albumin decreased from 90 to 61%, and the pure water fluxes of the membranes showed no obvious change. The rejection of Cr(VI) increased from 20% to 87% when the content of CQS was changed from 0 to 10 wt % in the membrane. Adsorptive UF membranes could be generated by a 1 mol/L solution of NaCl. The adsorption data were more applicable for a pseudo‐second‐order kinetic model and the Langmuir isotherm model. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45198.