Solvent extraction with microporous hydrophilic and composite membranes

Ravi Prasad, K. K. Sirkar

Research output: Contribution to journalArticlepeer-review

81 Scopus citations


Dispersion‐free solvent extraction using microporous hydrophobic membranes has been extended to hydrophilic and composite hydrophobic‐hydrophilic membranes. Excess phase pressure conditions, if needed for dispersion‐free operation, have been identified. Boundary layer and membrane resistances to solute transport have been isolated and simple relations developed for the overall mass transfer coefficient in such systems. A variety of flat microporous membranes have been utilized. Previous investigations by others had interpreted the membrane mass transfer resistance using the notion of unhindered diffusion through tortuous pores of the membrane. We have studied here the applicability and limitations of such a model for a number of membrane‐solute‐solvent systems.

Original languageEnglish (US)
Pages (from-to)1057-1066
Number of pages10
JournalAIChE Journal
Issue number7
StatePublished - Jul 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Environmental Engineering
  • General Chemical Engineering


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