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Study of the separation of methanol/methyl acetate mixtures bypervaporation with PVA/PVP blend membranes
Authors: XU Xiaoli  CHENG Xiaofei   XIAO Tonghu*  CHEN Shanmei
Units: Faculty of Materials Science and Chemical Engineering, NingBo University,NingBo 315211,China
KeyWords: pervaporation; PVA ;PVP; methanol; methyl acetate
ClassificationCode:TQ028.8
year,volume(issue):pagination: 2010,1(6):0-0

Abstract:
Abstract: Poly(vinyl alcohol) (PVA)/Poly(vinyl pyrrolidone) (PVP) blend membranes crosslinked with 4,4’-diazostilbene-2,2’-disulfonic acid disodium salt were prepared and used to separate methanol/methyl acetate mixtures by pervaporation. The effects of DAS content, blending composition, operating temperature and feed composition were investigated. WhenDAS/PVP ratio was 1∶3,PVP was crosslinked well and the membrane had a good separation factor. With the increasing of the PVP content in the membrane, permeation flux and separation factor increased and then decreased. Membrane containing 30% PVP exhibited good performance and gave the highest separation factor 17.7. With increasing temperature and methanol concentration in feed, the flux increased and the separation factor decreased.

Funds:
浙江省自然科学基金(Y407353)

AuthorIntro:
徐小莉(1984.10-),女,安徽铜陵人,硕士生,研究方向为膜分离技术。

Reference:
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