Transport Study of Cu (Ⅱ) Through Hollow Fiber Supported Liquid Membrane

CIESC Journal ›› 2010, Vol. 18 ›› Issue (1): 48-54.

Transport Study of Cu (Ⅱ) Through Hollow Fiber Supported Liquid Membrane

张卫东, 崔春花, 郝子苏

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

收稿日期:2009-04-02 修回日期:2009-06-01 出版日期:2010-02-28 发布日期:2010-12-30
通讯作者: ZHANG Weidong, E-mail: zhangwd@mail.buct.edu.cn
作者简介:
基金资助:
Supported by the Program for New Century Excellent Talents in University (NCET-05-0122);the National Natural Science Foundation of China(20576008,20706003);the Ph.D.Programs Foundation of Ministry of Education of China(200800100001)

Transport Study of Cu (Ⅱ) Through Hollow Fiber Supported Liquid Membrane

ZHANG Weidong, CUI Chunhua, HAO Zisu

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:2009-04-02 Revised:2009-06-01 Online:2010-02-28 Published:2010-12-30
Supported by:
Supported by the Program for New Century Excellent Talents in University (NCET-05-0122);the National Natural Science Foundation of China(20576008,20706003);the Ph.D.Programs Foundation of Ministry of Education of China(200800100001)

摘要/Abstract

摘要： The transport of Cu(Ⅱ)from aqueous solutions containing buffer media through hollow fiber supported liquid membrane(HFSLM)using di(2-ethylhexyl)phosphoric acid(D2EHPA)dissolved in kerosene as membrane phase and hydrochloric acid as striping phase was investigated.A set of factors were studied,including tube side velocity,shell side velocity,pH of the feed phase,Cu(Ⅱ)concentration in the feed phase,buffer media concentration and D2EHPA concentration in the membrane phase.Experimental results indicate that the mass transfer coefficient increases with increasing both carrier concentration in the organic phase and flow rates on the tube side and shell side,and decreases with increasing initial Cu(Ⅱ)concentration in the feed phase.With increasing pH value and acetate concentration in the feed phase,the mass transfer coefficient reaches a maximum value then decreases.The optimal operating conditions are obtained at pH value of 4.44 and 0.1 mol·L^-1 acetic ion oncentration in feed phase,and carrier volume fraction of around 10%in kerosene as organic phase.A mathematical model of the transport mechanism through HFSLM is developed.The modeled results agree well with the experimental ones.

关键词: hollow fiber supported liquid membrane, Cu(Ⅱ), buffer media, D2EHPA

Abstract: The transport of Cu(Ⅱ)from aqueous solutions containing buffer media through hollow fiber supported liquid membrane(HFSLM)using di(2-ethylhexyl)phosphoric acid(D2EHPA)dissolved in kerosene as membrane phase and hydrochloric acid as striping phase was investigated.A set of factors were studied,including tube side velocity,shell side velocity,pH of the feed phase,Cu(Ⅱ)concentration in the feed phase,buffer media concentration and D2EHPA concentration in the membrane phase.Experimental results indicate that the mass transfer coefficient increases with increasing both carrier concentration in the organic phase and flow rates on the tube side and shell side,and decreases with increasing initial Cu(Ⅱ)concentration in the feed phase.With increasing pH value and acetate concentration in the feed phase,the mass transfer coefficient reaches a maximum value then decreases.The optimal operating conditions are obtained at pH value of 4.44 and 0.1 mol·L^-1 acetic ion oncentration in feed phase,and carrier volume fraction of around 10%in kerosene as organic phase.A mathematical model of the transport mechanism through HFSLM is developed.The modeled results agree well with the experimental ones.

Key words: hollow fiber supported liquid membrane, Cu(Ⅱ), buffer media, D2EHPA

张卫东, 崔春花, 郝子苏. Transport Study of Cu (Ⅱ) Through Hollow Fiber Supported Liquid Membrane[J]. CIESC Journal, 2010, 18(1): 48-54.

ZHANG Weidong, CUI Chunhua, HAO Zisu. Transport Study of Cu (Ⅱ) Through Hollow Fiber Supported Liquid Membrane[J]. , 2010, 18(1): 48-54.

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Transport Study of Cu (Ⅱ) Through Hollow Fiber Supported Liquid Membrane

Transport Study of Cu (Ⅱ) Through Hollow Fiber Supported Liquid Membrane

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