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Membrane Water Treatment Volume 4, Number 4, October 2013 , pages 251-263 DOI: https://doi.org/10.12989/mwt.2013.4.4.251 |
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Mass transfer in cross-flow dialyzer with internal recycle |
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Ho-Ming Yeh and Chien-Yu Chen
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| 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. | ||
| Key Words | ||
| dialysis; cross flow; countercurrently internal recycle; rectangular module | ||
| Address | ||
| Ho-Ming Yeh and Chien-Yu Chen: Energy and Opto-Electronic Materials Research Center, Department of Chemical and Materials Engineering, Tamkang University, Tamsui, Taipei County, 251, Taiwan. | ||
