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Fabrication of High Performance Thin Film Composite Forward Osmosis Membranes and Its Application for Juice Concentration

Authors： AN Xiaochan, ZHANG Xiangyu, ZHOU Zongyao, HU Yunxia

Units： (1. CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, P. R. China. 2. State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Research on Membrane Science and Technology, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, P. R. China. 3. University of Chinese Academy of Sciences, Beijing 100049, P. R. China.)

KeyWords： Forward osmosis; High performance; Carbon nanotubes; TFC membranes; Juice concentration

ClassificationCode：TQ028.8; TB43

year,volume(issue):pagination： 2018,38(4):99-106

Abstract：

The conventional technology for juice concentration often leads to severe nutrition loss and high costs. Recently, forward osmosis (FO) shows great potential for juice concentration. However, the lack of efficient FO membranes is one of the critical challenges for the development of FO technology. Thus, to fabricate high performance thin film composite (TFC) forward osmosis membrane, we deposited carbon nanotubes on the back surface of PSF support to shrink the surface pores and synthesized the polyamide on top surface of the PSF support. The impacts of CNT deposition on the performance of TFC polyamide membranes were investigated, and our results found that the TFC membrane with CNT (TFC-CNT20) achieved the best performance. After 4200 min FO operation for juice concentration, the TFC membrane with CNT exhibited a lower flux decline percentage and a higher recovery percentage, compare with control membranes without the CNT.

Funds：

国家自然科学基金委(No. 21476249, No. 51708408), 烟台市重大研发计划 (No. 2015ZH063)和天津市重大平台项目资助，山东省重点研发计划(2016ZDJS04B03)。

AuthorIntro：

第一作者简介：安晓婵（1987-），女，河北省邢台市人，博士生，研究方向为新型正渗透膜，E-mail: anxiaochan@163.com 通讯作者，E-mail: yunxiahu@yic.ac.cn

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