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题名: Transport phenomena of chitosan membrane in pervaporation of water-ethanol mixture
作者: Ren, JZ;  Jiang, CZ
关键词: pervaporation ;  chitosan membrane ;  H2SO4 cross-linking chitosan membrane ;  water-ethanol mixture ;  membrane separation ;  temperature ;  thermodynamic swelling process ;  transport phenomena
刊名: SEPARATION SCIENCE AND TECHNOLOGY
发表日期: 1998
卷: 33, 期:4, 页:517-535
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The pervaporation transport process of H2O-EtOH solution was studied on a chitosan membrane and on a H2SO4 crosslinked chitosan membrane. The influence of concentration, temperature, and crosslinking was also studied. The dependence of permeation fluxes on feed concentration showed strong coupling effects existed in the permeation process. That the thermodynamic swelling-distribution relationship changed with the feed concentration also showed that a strong coupling effect existed in the thermodynamic swelling process. The permeation fluxes and thermodynamic swelling processes showed analogous relationships versus the concentration in the feed. The high swelling ratio and the high selectivity of the membrane in the thermodynamic swelling distribution process was the basis of high flux and high permselectivity of pervaporation. With an increase of temperature, the permeation fluxes increased quickly, but the swelling ratio of water and EtOH in the membrane scarcely changed. This showed that an increase of temperature promoted the diffusion process but had little influence on permselectivity. The permselectivity of pervaporation depended strongly on the thermodynamic swelling process.
关键词[WOS]: SEPARATION ;  PERMSELECTIVITY ;  PERMEATION
语种: 英语
WOS记录号: WOS:000072485800005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138186
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Ren, JZ,Jiang, CZ. Transport phenomena of chitosan membrane in pervaporation of water-ethanol mixture[J]. SEPARATION SCIENCE AND TECHNOLOGY,1998,33(4):517-535.
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