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Solvent recovery from soybean oil/hexane miscella by the SWNTs filled PDMS/PVDF composite membrane

Authors： SUN Yanzhi1, CAI Weibin2, HAN Xiaolong2, ZHANG Honglin1, LI Jiding1, ZHU Shenlin1

Units： 1. School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P.R.China;2. The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China, P. R. China.

KeyWords： SWNTs; PDMS; hexane; soybean oil; miscella; recovery

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2012, 32(2):80-86

Abstract：

Distillation is commonly used for traditional solvent recovery in the extraction step of edible oil processing, which consumes large amounts of energy. As an alternative solvent recovery method, membrane separation process can reduce the energy consumption greatly. In this work, incorporation of single-wall carbon nanotubes (SWNTs) into cross-linked polydimethylsiloxane / polyvinylidene fluoride (PDMS/PVDF) composite membranes were prepared, and employed in the recovery of hexane from soybean oil/hexane miscellas (1:3, w/w). The SWNTs filled PDMS/PVDF composite membranes were characterized by Contact angle meter and SEM. The effects of filling content and thermal pre-treatment of SWNTs on the separation performance were studied. It was found that the separation performances of the SWNTs filled PDMS/PVDF composite membranes were greatly improved with thermal treatment.

Funds：

国家973项目（2009CB623404）；国家自然科学基金项目（20736003）；国家重点实验室项目（SKL-ChE-08A01）。

AuthorIntro：

孙艳芝(1985－)，女，山东邹平县人，硕士研究生，从事膜分离研究. 通讯联系人李继定，清华大学化工系教授，电话：（010）62782432 E－mail：lijiding@mail.tsinghua.edu.cn

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