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Preparation of BPPO asymmetric membrane and its pervaporation for ethanol/water solution

Authors： ZENG Xiaoya，JI Shulan，QIN Zhenping，NIU Hongjin，LIU Wei

Units： Environment and Energy Institute of Beijing University of Technology，Beijing　100124，China

KeyWords： bromide PPO；asymmetric membrane；ethanol/water liquid mixture；pervaporation

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2011,31(6):30-34

Abstract：

：In order to get a good membrane material, bromide PPO (BPPO) was made, and BPPO asymmetric membrane was prepared through phase inversion process．The surface and section morphology of the membrane were observed by scanning electron microscopy（SEM）．The effects of additive content, BPPO concentration, feed solution composition and feed solution temperature on the pervaporation performance of dilute ethanol/water solutions were also studied．The results showed that the separation performance of BPPO membrane was excellent．When the additive content was 9.9%, the BPPO concentration was 10%, the feed concentration was 5% and the feed solution temperature was 60℃, the total permeation fiux and the separation factor for ethanol could be 236.4g/（m2•h）and 16.74， respectively．With the increasing of ethanol concentration in the feed solution, the selectivity of BPPO membrane decreased, while the permeation flux increased；with the increasing of feed solution temperature，both the separation factor and the permeation flux increased．

Funds：

国家自然科学基金项目（20876003，20806001）；北京市学术创新团队计划资助（PHR200907105）；北京市教委项目科技创新平台（JX005012201002）

AuthorIntro：

曾小雅（1985-），女，硕士研究生，湖北武汉人，研究方向为膜科学与化工分离技术，010-67391603，Email：zengxiaoya@emails.bjut.edu.cn，通讯地址：北京市朝阳区平乐园100号北京工业大学环境与能源工程学院化工原理实验室 **通讯联系人， Email：jshl@bjut.edu.cn

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