SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2013, Vol. 21 ›› Issue (8): 827-834.DOI: 10.1016/S1004-9541(13)60547-9

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Recovery of Copper Ions from Wastewater by Hollow Fiber Supported Emulsion Liquid Membrane

ZHENG Huidong, CHEN Jingjing, WANG Biyu, ZHAO Suying   

  1. College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China
  • Received:2012-03-07 Revised:2013-01-26 Online:2013-08-24 Published:2013-08-28
  • Supported by:

    Supported by the National Natural Science Foundation of China (20676023).

Recovery of Copper Ions from Wastewater by Hollow Fiber Supported Emulsion Liquid Membrane

郑辉东, 陈晶晶, 王碧玉, 赵素英   

  1. College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China
  • 通讯作者: ZHENG Huidong
  • 基金资助:

    Supported by the National Natural Science Foundation of China (20676023).

Abstract: Recovery of copper ions from wastewater using a hollow fiber supported emulsion liquid membrane (HFSELM) was studied with LIX984N as carrier, kerosene as diluents, and sulfuric acid solution as stripping phase. Effects of compositions of feed and emulsion liquid phase, flow rates on both sides of membrane, and hollow fiber module parameters were investigated. The stability of the emulsion liquid phase without surfactant and the effect of buffer in the feed phase on the extraction rate were also evaluated. It is found that the stability of the emulsion phase without surfactant is poor. Higher flow velocity gives shorter residence time for the emulsion liquid phase on the tube side, reducing the effect of particle coalescence on the separation process. The extraction rate increases with the increase of feed phase pH, carrier concentration, hydrogen ion concentration in the stripping phase, and effective hollow fiber area. The phase ratio in the emulsion liquid phase has a negative effect on extraction rate. The flow rates on both sides have little influence on the extraction performance of the HFSELM, while buffer addition in the feed solution improves the extraction efficiency.

Key words: copper ion, supported emulsion liquid membrane, extraction rate, hollow fiber

摘要: Recovery of copper ions from wastewater using a hollow fiber supported emulsion liquid membrane (HFSELM) was studied with LIX984N as carrier, kerosene as diluents, and sulfuric acid solution as stripping phase. Effects of compositions of feed and emulsion liquid phase, flow rates on both sides of membrane, and hollow fiber module parameters were investigated. The stability of the emulsion liquid phase without surfactant and the effect of buffer in the feed phase on the extraction rate were also evaluated. It is found that the stability of the emulsion phase without surfactant is poor. Higher flow velocity gives shorter residence time for the emulsion liquid phase on the tube side, reducing the effect of particle coalescence on the separation process. The extraction rate increases with the increase of feed phase pH, carrier concentration, hydrogen ion concentration in the stripping phase, and effective hollow fiber area. The phase ratio in the emulsion liquid phase has a negative effect on extraction rate. The flow rates on both sides have little influence on the extraction performance of the HFSELM, while buffer addition in the feed solution improves the extraction efficiency.

关键词: copper ion, supported emulsion liquid membrane, extraction rate, hollow fiber