Preparation of a novel poly(ether sulfone) adsorptive ultrafiltration membrane containing a crosslinked quaternary chitosan salt and chromate removal

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 chit...

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Published in:Journal of applied polymer science 2017-09, Vol.134 (33), p.n/a
Main Authors: Huang, Zheng‐Qing, Yang, Tian‐Qi, Zhou, Kai‐Mei, Chen, Jun‐Ping, Wei, Peng, Zhang, Zhi, Xu, Hong‐Tao
Format: Article
Language:English
Subjects:
adsorption
Adsorptivity
Chitosan
Chromates
Contact angle
Crosslinking
Dimethyl acetamide
Fluxes
Hexavalent chromium
Materials science
Membranes
Polymers
porous materials
Rejection
separation techniques
Serum albumin
Ultrafiltration
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Summary: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.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.45198