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Mass transfer in cross-flow dialyzer with internal recycle

  • Yeh, Ho-Ming (Energy and Opto-Electronic Materials Research Center, Department of Chemical and Materials Engineering, Tamkang University) ;
  • Chen, Chien-Yu (Energy and Opto-Electronic Materials Research Center, Department of Chemical and Materials Engineering, Tamkang University)
  • Received : 2013.02.26
  • Accepted : 2013.06.24
  • Published : 2013.10.25

Abstract

The internal reflux effect on dialysis through the retentate phase of a countercurrently cross-flow rectangular module is investigated. Theoretical analysis of mass transfer in cross-flow devices with or without recycling is analogous to heat transfer in cross-flow heat exchangers. In contrast to a device without reflux, considerable mass transfer is achievable if cross-flow dialyzers are operated with reflux, which provides an increase in fluid velocity, resulting in a reduction in mass-transfer resistance. It is concluded that reflux can enhance mass transfer, especially for large flow rate and feed-concentration operated under high reflux ratio.

Keywords

References

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