Membrane and Water Treatment

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Modeling of flux enhancement in presence of concentration polarization by pressure pulsation during laminar cross flow ultrafiltration

  • Kumar, Kamal (Department of Chemical Engineering, Indian Institute of Technology) ;
  • De, Sirshendu (Department of Chemical Engineering, Indian Institute of Technology)
  • Received : 2009.09.11
  • Accepted : 2010.06.16
  • Published : 2010.10.25
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Abstract

A theoretical study for the flux enhancement by pulsation of transmembrane pressure is presented for osmotic pressure controlled ultrafiltration under laminar flow regime. The transient velocity profile is solved analytically using Green's function method. Time dependent convective diffusive equation is solved to quantify the membrane surface concentration and the permeate flux, numerically. The effects of the amplitude and frequency of pulsation on flux, surface concentration and observed retention are studied.

Keywords

References

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