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A combined complete pore blocking and cake filtration model for steady-state electric field-assisted ultrafiltration

  1. Biswajit Sarkar1,2,
  2. Sirshendu De1,2,*

Article first published online: 23 MAY 2011

DOI: 10.1002/aic.12667

Issue

AIChE Journal

AIChE Journal

Volume 58, Issue 5, pages 1435–1446, May 2012

Additional Information

How to Cite

Sarkar, B. and De, S. (2012), A combined complete pore blocking and cake filtration model for steady-state electric field-assisted ultrafiltration. AIChE J., 58: 1435–1446. doi: 10.1002/aic.12667

Author Information

  1. 1

    University School of Chemical Technology, GGS Indraprastha University, Delhi 110075, India

  2. 2

    Dept. of Chemical Engineering, Indian Institute of Technology, Kharagpur 721 302, India

*University School of Chemical Technology, GGS Indraprastha University, Delhi 110006, India

Publication History

  1. Issue published online: 6 APR 2012
  2. Article first published online: 23 MAY 2011
  3. Accepted manuscript online: 28 APR 2011 11:30AM EST
  4. Manuscript Revised: 22 APR 2011
  5. Manuscript Received: 11 SEP 2010

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Keywords:

  • ultrafiltration;
  • electrophoresis;
  • complete pore blocking;
  • cake formation;
  • pectin

Abstract

An analysis for the flux decline and identification of dominant fouling mechanism in electric field enhanced cross-flow ultrafiltration (UF) is proposed. The model is developed based on the modification of Hérmia's approach for constant pressure dead-end filtration laws. Electric field-assisted cross-flow UF experiments of synthetic juice (a mixture of pectin and sucrose) are performed in a rectangular flow channel. Using the flux decline data, the dominant fouling mechanism is identified by estimation of model parameters. The effect of various operating conditions such as electric field, feed solute concentration, cross-flow velocity, and transmembrane pressure on the flux decline and the corresponding fouling mechanism are studied. Experimental results show that electric field has significant effect on the onset of cake formation as well as on the enhancement in permeate flux. Model-predicted results are successfully compared with the experimental data. © 2011 American Institute of Chemical Engineers AIChE J, 2012

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