膜科学与技术

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Comparison and analysis of PES ultrafiltration membranes modified by blending graphene oxide and nano-TiO2

Authors： ZHAO Yongjun1,LI Fang1,2*, LI Jiafeng1,MA Chunyan1,2

Units： 1. College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; 2. State Environmental Science and Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China

KeyWords： GO; TiO2; blending modification ultrafiltration membrane; comparison

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(3):13-20

Abstract：

In order to improve the separation performance of ultrafiltration (UF) membranes, PES UF membranes were modified by blending with nano-TiO2 and graphene oxide in this paper. The casting solution of PES was blended with GO and nano-TiO2 or either of them in different loading, and the separation performance and anti-fouling ability of the modified membranes were investigated. The modified membranes were characterized by the analysis methods such as thermal gravity. The water flux measurements were conducted by using the pure water and simulated foulant solution. The results showed that the thermal stability was improved, the mean pore size was increased, and the surface roughness was smaller than that of the modified membranes. Compared to another blending modification reports, the PES ultrafiltration membrane loading GO and nano-TiO2(0.8%GO+0.2%nano-TiO2) have the optimal performance in permeability. The pure water flux of the membrane with 0.8%GO+0.2%nano-TiO2 reached 260LMH, up to 52.1% higher than pristine ultrafiltration membrane, and the contact angle reached 54.7°. During the 180min’s filtration tests of BSA and SA solution, the stable flux reached 67.8 and 68.0LMH respectively, and both of the rejections were more than 99%.

Funds：

国家自然科学基金（51478099），中央高校基本科研业务费专项资金（223215A3-04）

AuthorIntro：

赵永军（1989-），男，硕士研究生，从事膜法水处理研究。通讯作者，Email:lifang@dhu.edu.cn

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