Zhou, Zongyao1,2; Hu, Yunxia1
; Wang, Qun1; Mi, Baoxia3发表期刊JOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
2020-10-01
卷号611页码:10
关键词Carbon nanotubeOrganic solvent recoveryForward osmosisMembranePolyamide
DOI10.1016/j.memsci.2020.118273
通讯作者Hu, Yunxia(yunxiahu@yic.ac.cn)
英文摘要We proposed a novel strategy for fabricating a high-performance forward osmosis (FO) membrane by forming a polyamide (PA) selective layer via interfacial polymerization on top of an interconnected porous carbon nanotube (CNT) network support. The fabricated CNT-PA membrane had a highly permeable and selective PA layer for fast water and solvents passage with efficient salt and solutes rejection, and an ultrathin CNT support that significantly reduced the internal concentration polarization in the FO process. Tested in the FO (e.g., active layer facing feed solution) mode using DI water as feed solution and 1.0 M NaCl as draw solution, the optimal CNT-PA membrane exhibited a water flux of as high as 139 L m(-2) h(-1)(LMH)with comparable salt rejection, 686% higher than that of commercial FO membrane, outperforming the previously reported best FO membranes tested under similar conditions. Besides, the CNT-PA membrane also showed great capability to recover organic solvents such as ethanol (EtOH), dimethylsulfoxide (DMSO), dimethylformamide (DMF) and dimethylacetamide (DMAc) when used in the organic solvent forward osmosis (OSFO) process and to concentrate chemicals in organic solvents. Results present that the CNT-PA membrane exhibited a DMAc flux of around 20 LMH with near 100% rhodamine B dye rejection and a negligible reverse solute flux when using 2.0 M PEG400 as a draw solution. The contributions of the CNT support layer and the PA selective layer to the osmotic filtration performance of the CNT-PA membrane were investigated and discussed to provide insights on the FO membrane design and fabrication for the efficient separation in aqueous and organic solvent system.
资助机构National Natural Science Foundation of China; Chang-jiang Scholars and Innovative Research Team in the University of Ministry of Education, China; Science and Technology program of Tianjin; U.S. National Science Foundation
收录类别SCI
语种英语
关键词[WOS]THIN-FILM-COMPOSITE; WASTE-WATER; NANOFILTRATION MEMBRANE; POLYSULFONE SUBSTRATE; FABRICATION; DESALINATION; LAYER; PERFORMANCE; PARAMETERS; TRANSPORT
研究领域[WOS]Engineering; Polymer Science
WOS记录号WOS:000560708400005
引用统计被引频次：10[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/28540
专题中科院海岸带环境过程与生态修复重点实验室
中科院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
通讯作者Hu, Yunxia作者单位1.Tianjin Polytech Univ, Natl Ctr Int Res Membrane Sci & Technol, State Key Lab Separat Membranes & Membrane Proc, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA
推荐引用方式
GB/T 7714Zhou, Zongyao,Hu, Yunxia,Wang, Qun,et al. Carbon nanotube-supported polyamide membrane with minimized internal concentration polarization for both aqueous and organic solvent forward osmosis process[J]. JOURNAL OF MEMBRANE SCIENCE,2020,611:10.
APAZhou, Zongyao,Hu, Yunxia,Wang, Qun,&Mi, Baoxia.(2020).Carbon nanotube-supported polyamide membrane with minimized internal concentration polarization for both aqueous and organic solvent forward osmosis process.JOURNAL OF MEMBRANE SCIENCE,611,10.
MLAZhou, Zongyao,et al."Carbon nanotube-supported polyamide membrane with minimized internal concentration polarization for both aqueous and organic solvent forward osmosis process".JOURNAL OF MEMBRANE SCIENCE 611(2020):10.
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