陈丽杰

个人信息Personal Information

副教授

硕士生导师

性别:女

毕业院校:大连理工大学

学位:硕士

所在单位:生物工程学院

电子邮箱:ljchen@dlut.edu.cn

扫描关注

论文成果

当前位置: 中文主页 >> 科学研究 >> 论文成果

A carbon nanotube filled polydimethylsiloxane hybrid membrane for enhanced butanol recovery

点击次数:

论文类型:期刊论文

发表时间:2014-08-01

发表刊物:SCIENTIFIC REPORTS

收录刊物:SCIE、PubMed、Scopus

卷号:4

页面范围:5925

ISSN号:2045-2322

摘要:The carbon nanotubes (CNTs) filled polydimethylsiloxane (PDMS) hybrid membrane was fabricated to evaluate its potential for butanol recovery from acetone-butanol-ethanol (ABE) fermentation broth. Compared with the homogeneous PDMS membrane, the CNTs filled into the PDMS membrane were beneficial for the improvement of butanol recovery in butanol flux and separation factor. The CNTs acting as sorption-active sites with super hydrophobicity could give an alternative route for mass transport through the inner tubes or along the smooth surface. The maximum total flux and butanol separation factor reached up to 244.3 g/m(2).h and 32.9, respectively, when the PDMS membrane filled with 10 wt% CNTs was used to separate butanol from the butanol/water solution at 80 degrees C. In addition, the butanol flux and separation factor increased dramatically as temperature increased from 30 degrees C to 80 degrees C in feed solution since the higher temperature produced more free volumes in polymer chains to facilitate butanol permeation. A similar increase was also observed when butanol titer in solution increased from 10 g/L to 25 g/L. Overall, the CNTs/PDMS hybrid membrane with higher butanol flux and selectivity should have good potential for pervaporation separation of butanol from ABE fermentation broth.