膜科学与技术

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Effect of the air-gap distance on CA/PES ultra-filtration blend membrane

Authors： GU Zhi-Yun, XU Zhen-Liang, WEI Yong-Ming, YANG Hu

Units： State Key Laboratory of Chemical Engineering, Membrane Science and Engineering R&D Laboratory, Chemical Engineering Research Center, East China University of Scienceand Technology, Shanghai 200237, China

KeyWords： Air–gap distance; blend; ultra-filtration membrane; cellulose acetate;polyethersulphone

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(5):31-35

Abstract：

CA/PES hollow fiber ultra-filtration (UF) membranes were prepared via non-solvent induced phase separation (NIPS)method with air gap. Based on the previous experiments, the total concentration of cellulose acetate (CA)/ polyethersulphone (PES) blend solution was chosen as 25wt% and the mass ratio of CA/PES was 9:1. The effect of the air-gap distance on the performance of CA/PES UF membranes was investigated. The results showed that the UF membrane has a pure water flux of 73.3L•m-2•h-1, a PEG20000 rejection of84.2% and 4.6 nm pore size when the UF membrane was prepared with an air gap of9 cm.

Funds：

2013年国家新材料研发及产业化专项(GX1301)、国家科技支撑计划项目(2014BAB07B01)和江苏省科技工业支撑计划(BE2013031)。

AuthorIntro：

作者简介：顾志云（1990-），女，江苏泰州人，硕士研究生，主要从事膜分离技术的研究工作。通讯联系人：魏永明，Tel：021-64253670；Email：ymwei@ecust.edu.cn

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