膜科学与技术

Position：Home >> Abstract

Preparation of Vi-PDMS/PSF composite membrane and its pervaporation performancein ethanol/water mixtures

Authors： ZHANG Guojun, WANG Naixin, LI Jie,YAN Hao, JI Shulan

Units： College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

KeyWords： vinyl polydimethylsiloxane (Vi-PDMS); pervaporation; composite membrane; separation performance

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(4):103-109

Abstract：

The vinyl PDMS (Vi-PDMS) and hydroxyl PDMS(OH-PDMS) were used to prepare PDMS/PSFcomposite membranesfor ethanol permselectivepervaporation via dip-coating method. Themorphology and hydrophobicity of the membranes were characterized by scanning electron microscopy (SEM) andcontact angle (CA), respectively. The results showed that the surfaceof Vi-PDMS/PScomposite membraneswere defect-freewithgood hydrophobicity. The swelling degrees and effect of humidity on pervaporation performance of the different PDMS composite membranes were compared. It is demonstrated that the Vi-PDMS composite membrane had better resistance to swelling and humidity than the OH-PDMS composite membrane. Therefore, the Vi-PDMS composite membrane has a potential application in ethanol permselectivepervaporation. The effects of casting solution concentration, feed concentration,and feed temperatureon the separation performance of the membranes were investigated. When the feed solution is 5wt% ethanol/water mixtures at 60 °C, the total permeate flux and separation factor were857.1g/(m2•h) and 8.9 respectively.Moreover, the composite membrane had a stable separation performance in 700 h, which indicated that it has a potential in industry.

Funds：

国家“863”计划资助项目(2012AA03A607)；国家自然科学基金资助项目（21176007）

AuthorIntro：

作者简介：张国军(1989—)，男，河北沧州人，硕士研究生，主要从事膜分离技术与应用方面的研究E-mail:hnzhangguojun@emails.bjut.edu.cn* 联系人E-mail:jshl@bjut.edu.cn

Reference：

[1] Vane L M. A review of pervaporation for product recovery from biomass fermentation processes[J]. J ChemTechnolBiotechnol, 2005, 80: 603-629.
[2] Kang C H, Lin Y F, Huang Y S, et al. Synthesis of ZIF-7/chitosan mixed-matrix membranes with improved separation performance of water/ethanol mixtures[J]. J MembrSci, 2013, 483: 105-111.
[3] Liu D Y, Liu G P, Meng L, et al. Hollow fiber modules with ceramic-supported PDMS composite membranes for pervaporation recovery of bio-butanol[J]. Sep PurifTechnol, 2015, 146: 24-32.
[4] Wu T, Wang N X, Li J, et al. Tubular thermal crosslinked-PEBA/ceramic membrane for aromatic/aliphatic pervaporation[J]. J MembrSci, 2015, 486: 1-9.
[5] 韩秋，周浩力，刘公平，等. PDMS/PVDF复合膜分离VOC/N2 的研究性能[J]. 膜科学与技术, 2015, 35(1): 75-81.
[6] Han X L, Wang L, Li J D, et al.Separation of Ethanol from Ethanol/Water Mixtures by Pervaporation with Silicone Rubber Membranes: Effect of Silicone Rubbers[J]. J ApplPolym Sci.2011, 119: 3413-3421.
[7] Liu G P, Gan L, Liu S N, et al. PDMS/ceramic composite membrane for pervaporation separation of acetone–butanol–ethanol (ABE) aqueous solutions and its application in intensification of ABE fermentation process[J].ChemEng Process, 2014, 86: 162-172.
[8] 王蕾，李继定，韩小龙. 双组分加成型硅橡胶膜制备及其渗透汽化分离碳酸二甲酯/甲醇[J]. 化工进展, 2009, 28: 134-137.
[9] 徐小辉，田霖，刘爱民，等. 加成型液体硅橡胶概述[J]. 弹性体, 2006, 16(2): 69-72.
[10] 戚云霞，赵士贵，姜伟峰，等. 加成型室温硫化硅橡胶的研究进展[J]. 有机硅材料, 2006, 20(1): 34-37.
[11] Wang R, Shan L L, Zhang G J, et al. Multiple sprayed composite membranes with high flux for alcohol permselectivepervaporation[J]. J MembrSci, 2013, 432: 33-41.
[12] Zhang G J, Li J, Wang N X, et al. Enhancedflux of polydimethylsiloxane membrane for ethanol permselectivepervaporation via incorporation of MIL-53 particles[J]. J MembrSci, 2015, 492: 322-330.

Service：

【Download】【Collect】

《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone：010-80492417/010-80485372; Fax：010-80485372 ; Email：mkxyjs@163.com