Surfactant enhanced filtration performances of monochlorophenol isomers through low-pressure membrane

Yogesh Kumar, H. Brahmbhatt, G. S. Trivedi, A. Bhattacharya*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Membrane processes are major breakthrough for the removal of organic pollutants in water remediation. The separations of solutes depend on nature of the membranes and solutes. The separation performance depends on the nature of the solutes (i.e., molecular volume, polarity, and hydrophobicity) for the same membrane. As 4-chlorophenol is of more dipolemoment compared to 2-chlorophenol, the orientation of the molecule enables it pass through the pores of the membrane, which is of negatively charged and thus separation order follows: 2-chlorophenol > 4-chlorophenol. Hydrophobicity factor also supports the order. Addition of sodium dodecyl sulfate (SDS) to chlorophenol solution shows remarkable increase in separation performance of the membrane. The improvement in separation is 1.8 and 1.5 times for 4-and 2-chlorophenol consecutively in case of 0.0082 M SDS (1cmc = 0.0082 M) in the solution. 4-chlorophenol has better attachment tendency with SDS because of its relatively more hydrophobic nature and thus reflects in performance i.e. the separation performance of 4-chlorophenol with SDS through the membrane is better compared to 2-chlorophenol.

Original languageEnglish (US)
Pages (from-to)137-145
Number of pages9
JournalMembrane Water Treatment
Volume2
Issue number3
StatePublished - Jul 2011
Externally publishedYes

Keywords

  • Chlorophenol
  • Hydrophobicity
  • Membrane
  • Surfactant
  • Thin film composite

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Water Science and Technology

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