Development of a nanofiltration membrane for humic acid removal through the formation of polyelectrolyte multilayers that contain nanoparticles

Law Yong Ng, Abdul Wahab Mohammad, Rosiah Rohani, Nur Hanis Hayati Hairom

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Poly(sodium-4-styrenesulphonate) (PSS) and poly(diallyldimethylammonium chloride) have been employed to construct polyelectrolyte multilayers on a polyethersulphone substrate for use in the nanofiltration of humic acid. Self-synthesised Ag2O and commercial ZnO nanoparticles were incorporated into the multilayers separately, showing increases in the permeability from 7.53 ± 1.83 to 8.39 ± 1.37 and 8.62 ± 1.03 L m−2 h−1 bar−1, respectively, with no significant leaching observed in the permeates. All polyelectrolyte-modified membranes exhibited good film-formation stabilities and high humic acid retention capabilities, which ranged from 93.14 ± 2.43 to 95.57 ± 3.87%. Less humic acid solutes were deposited onto the surface of the polyelectrolyte-modified membrane, which was confirmed through field emission scanning electron microscopy images. The contact angle was reduced from 44.00 ± 3.46° to 39.10 ± 3.47° when the membrane surface was hydrophilised with PSS as the terminating layer.

Original languageEnglish
Pages (from-to)7627-7636
Number of pages10
JournalDesalination and Water Treatment
Volume57
Issue number17
DOIs
Publication statusPublished - 8 Apr 2016

Fingerprint

Nanofiltration membranes
Polyelectrolytes
humic acid
Multilayers
Nanoparticles
membrane
Membranes
Nanofiltration
Field emission
Leaching
Contact angle
solute
scanning electron microscopy
leaching
Sodium
chloride
sodium
permeability
substrate
Scanning electron microscopy

Keywords

  • Humic acid
  • Nanofiltration
  • Nanoparticles
  • Polyelectrolytes
  • Selectivity
  • Self-assembly

ASJC Scopus subject areas

  • Pollution
  • Water Science and Technology
  • Ocean Engineering

Cite this

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abstract = "Poly(sodium-4-styrenesulphonate) (PSS) and poly(diallyldimethylammonium chloride) have been employed to construct polyelectrolyte multilayers on a polyethersulphone substrate for use in the nanofiltration of humic acid. Self-synthesised Ag2O and commercial ZnO nanoparticles were incorporated into the multilayers separately, showing increases in the permeability from 7.53 ± 1.83 to 8.39 ± 1.37 and 8.62 ± 1.03 L m−2 h−1 bar−1, respectively, with no significant leaching observed in the permeates. All polyelectrolyte-modified membranes exhibited good film-formation stabilities and high humic acid retention capabilities, which ranged from 93.14 ± 2.43 to 95.57 ± 3.87{\%}. Less humic acid solutes were deposited onto the surface of the polyelectrolyte-modified membrane, which was confirmed through field emission scanning electron microscopy images. The contact angle was reduced from 44.00 ± 3.46° to 39.10 ± 3.47° when the membrane surface was hydrophilised with PSS as the terminating layer.",
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AU - Ng, Law Yong

AU - Mohammad, Abdul Wahab

AU - Rohani, Rosiah

AU - Hairom, Nur Hanis Hayati

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AB - Poly(sodium-4-styrenesulphonate) (PSS) and poly(diallyldimethylammonium chloride) have been employed to construct polyelectrolyte multilayers on a polyethersulphone substrate for use in the nanofiltration of humic acid. Self-synthesised Ag2O and commercial ZnO nanoparticles were incorporated into the multilayers separately, showing increases in the permeability from 7.53 ± 1.83 to 8.39 ± 1.37 and 8.62 ± 1.03 L m−2 h−1 bar−1, respectively, with no significant leaching observed in the permeates. All polyelectrolyte-modified membranes exhibited good film-formation stabilities and high humic acid retention capabilities, which ranged from 93.14 ± 2.43 to 95.57 ± 3.87%. Less humic acid solutes were deposited onto the surface of the polyelectrolyte-modified membrane, which was confirmed through field emission scanning electron microscopy images. The contact angle was reduced from 44.00 ± 3.46° to 39.10 ± 3.47° when the membrane surface was hydrophilised with PSS as the terminating layer.

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