Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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A Study on the Mass Transfer and Metal Extraction by use of Hydrophobic Membrane

소수성막을 이용한 금속추출 및 물질전달에 관한 연구

  • Lee, Ryong-Jin (Department of Chemical Engineering, Dong-A University) ;
  • Kim, Young-Il (Department of Chemical Engineering, Dong Seo University) ;
  • Park, Dong-Won (Department of Chemical Engineering, Dong-A University)
  • 이용진 (동아대학교 화학공학과) ;
  • 김영일 (동서대학교 화학공학과) ;
  • 박동원 (동아대학교 화학공학과)
  • Received : 1998.06.23
  • Accepted : 1998.08.31
  • Published : 1998.12.10

Abstract

It was investigated that the extraction of Cr(VI) from aqueous solution into the organic TDA and the stripping(back extraction) of Cr(VI) from the Cr(VI)-TDA complex into NaOH aqueous solution by hydrophobic hollow fiber membrane. It was found that the mass transfer rates of stripping process were smaller than those of the extraction process. This result was expected that membrane resistance, neglected in the extraction process, acts on the stripping process when organic phase flow in the tube side of the hydrophobic membrane. Hollow fiber modules were made by potting the desired number(60, 100, 150, 300fibers). We also examined the effect of flow rates of aqueous and organic phase on the mass transfer rate in the membrane modules. From these experiments, we identified for the extraction process by using hydrophobic membrane, the effect of flow rate of aqueous phase on the mass transfer rate was significant, but that of organic phase was negligible one. In the stripping process, however, mass transfer rate depend neither flow rate of aqueous(stripping solution) phase nor that of organic(Cr-TDA complex) phase.

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Acknowledgement

Supported by : 한국학술진흥재단

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