Modification of polyacrylonitrile membranes via plasma treatment followed by polydimethylsiloxane coating for recovery of ethyl acetate from aqueous solution through vacuum membrane distillation

doi:10.1016/j.seppur.2018.01.011

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 生化工程国家重点实验室

	Modification of polyacrylonitrile membranes via plasma treatment followed by polydimethylsiloxane coating for recovery of ethyl acetate from aqueous solution through vacuum membrane distillation
	Wu, Huanhuan 1,2; Shen, Fei 1,2; Su, Yi 1; Chen, Xiangrong 1; Wan, Yinhua 1,2
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2018-05-31
卷号	197 页码:178-188
关键词	Plasma Modification Pdms Coating Ethyl Acetate Membrane Distillation
ISSN号	1383-5866
DOI	10.1016/j.seppur.2018.01.011
文献子类	Article
英文摘要	For the recovery of ethyl acetate (EtAc) from aqueous solution via vacuum membrane distillation (VMD), hydrophobic porous membranes with high and stable separation performance were prepared by carbon tetra fluoride (CF4) plasma treatment on polyacrylonitrile (PAN) membrane followed by polydimethylsiloxane (PDMS) coating. The effects of plasma treatment conditions and PDMS contents on the morphology, surface porosity and separation performance of modified membranes were investigated. It was found that both the two modification operations increased the hydrophobicity of the PAN membrane. CF4 plasma treatment increased the hydrophobicity (the contact angle increased from 42 to 124 measured by 2.5 wt% EtAc solution), surface mean pore size (from 24.6 nm to 150.5 nm) and porosity (from 7% to 32.3%) of hydrophilic PAN membrane, suggesting that the CF4-modified membranes (PAN-C membranes) with high hydrophobicity could be used in VMD. Optimized PDMS coating on the PAN-C membranes (PAN-C-P membranes) further narrowed the pore size distribution but retained porous and hydrophobic surface. The PAN-C membranes were much less efficient and stable in separating EtAc from water comparing with the PAN-C-P ones. For instance, for the separation of 1 wt% EtAc/water mixture, the best VMD performance in this work was achieved by the PAN-C3-P3 membrane with a separation factor of 70 and a total flux of 7.85 kg/m(2) h (PSI = 542). Moreover, the PAN-C3-P3 membrane showed a very stable separation performance than that of the PAN-C3 membrane during a 90 h intermittent VMD operation, indicating a very promising application prospect for EtAc recycling.
WOS关键词	VOLATILE ORGANIC-COMPOUNDS ; HYDROPHOBIC CERAMIC MEMBRANES ; HOLLOW-FIBER MEMBRANE ; DIRECT-CONTACT ; PERVAPORATION ; WATER ; REMOVAL ; SEPARATION ; MIXTURES ; SIMULATION
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000428973600020
资助机构	National Natural Science Founds of China(21106153) ; Solar Energy Initiative of the Chinese Academy of Sciences(KGCX2-YW-380) ; National High-Tech R&D Program of China(2012AA021202 ; 2014AA021005)
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/24148]
专题	过程工程研究所_生化工程国家重点实验室
作者单位	1.Chinese Acad Sci, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Huanhuan,Shen, Fei,Su, Yi,et al. Modification of polyacrylonitrile membranes via plasma treatment followed by polydimethylsiloxane coating for recovery of ethyl acetate from aqueous solution through vacuum membrane distillation[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2018,197:178-188.
APA	Wu, Huanhuan,Shen, Fei,Su, Yi,Chen, Xiangrong,&Wan, Yinhua.(2018).Modification of polyacrylonitrile membranes via plasma treatment followed by polydimethylsiloxane coating for recovery of ethyl acetate from aqueous solution through vacuum membrane distillation.SEPARATION AND PURIFICATION TECHNOLOGY,197,178-188.
MLA	Wu, Huanhuan,et al."Modification of polyacrylonitrile membranes via plasma treatment followed by polydimethylsiloxane coating for recovery of ethyl acetate from aqueous solution through vacuum membrane distillation".SEPARATION AND PURIFICATION TECHNOLOGY 197(2018):178-188.