Development of a highly hydrophilic nanofiltration membrane for desalination and water treatment

A. L. Ahmad, B. S. Ooi, Abdul Wahab Mohammad, J. P. Choudhury

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Thin film composite (TFC) co-polyamide membranes were modified by adding carboxyl group to the polypiperazinamide backbone. The sodium chloride, sodium sulphate, magnesium chloride and magnesium sulphate rejections were measured at various feed pressures for the modified and unmodified membranes. The pure water permeability was improved as much as 20% for the modified membrane. Besides, the membrane rejection ability towards divalent ions was excellent compared to the monovalent ions. The rejection of multivalent ions was more than 96% at the operating pressure as low as 450 kPa. The modified membrane was more negatively charged compared to the unmodified membrane. The membranes developed can be used for pre-treatment in a desalination plant as well as for hardness removal in water treatment process at a higher production rate.

Original languageEnglish
Pages (from-to)215-221
Number of pages7
JournalDesalination
Volume168
Issue number1-3
DOIs
Publication statusPublished - 15 Aug 2004

Fingerprint

Nanofiltration membranes
Desalination
Water treatment
desalination
water treatment
membrane
Membranes
Ions
Magnesium
ion
magnesium
sulfate
Magnesium Sulfate
Magnesium Chloride
Sodium sulfate
Nylons
Sodium chloride
sodium chloride
Polyamides
Sodium Chloride

Keywords

  • Carboxyl group
  • Desalination
  • Hydrophilic
  • Nanofiltration

ASJC Scopus subject areas

  • Filtration and Separation

Cite this

Development of a highly hydrophilic nanofiltration membrane for desalination and water treatment. / Ahmad, A. L.; Ooi, B. S.; Mohammad, Abdul Wahab; Choudhury, J. P.

In: Desalination, Vol. 168, No. 1-3, 15.08.2004, p. 215-221.

Research output: Contribution to journalArticle

Ahmad, A. L. ; Ooi, B. S. ; Mohammad, Abdul Wahab ; Choudhury, J. P. / Development of a highly hydrophilic nanofiltration membrane for desalination and water treatment. In: Desalination. 2004 ; Vol. 168, No. 1-3. pp. 215-221.
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