Improving performance in algal organic matter filtration using polyvinylidene fluoride–graphene oxide nanohybrid membranes

Woon Chan Chong, Ebrahim Mahmoudi, Ying Tao Chung, Chai Hoon Koo, Abdul Wahab Mohammad, Kamrul Fakir Kamarudin

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This study investigated the characteristics of various graphene oxide (GO) nanohybrid membranes and their performance in algal organic matter (AOM) filtration. The membranes were fabricated by phase inversion method. The effect of GO and its nanohybrids embedded in membranes was investigated in terms of wettability, porosity, pore size, surface charge, composition, morphology, permeability, fouling resistance and antimicrobial ability. In addition, the rejection of protein and carbohydrate as critical foulants in AOM was studied. Based on the findings, all the composite membranes showed lower flux decline than PVDF membrane. Composite membranes maintained higher protein (81–86%) and carbohydrate (77–83%) rejection compared with PVDF membrane (64% for protein and 63% for carbohydrate). However, the reversible to irreversible fouling ratio of PVDF, ZnO/GO-PVDF, Ag/GO-PVDF and GO-PVDF membranes was 3.07, 1.53, 0.86 and 1.09, respectively. This scenario implied that more hydrophilic substances in small molecular weight (MW) contained in AOM had plugged the composite membranes' pores and resulted in irreversible fouling. On the other hand, ZnO/GO-PVDF and Ag/GO-PVDF membranes exhibited superior antimicrobial ability and showed great potential in anti-biofouling mitigation.

Original languageEnglish
Pages (from-to)32-42
Number of pages11
JournalAlgal Research
Volume27
DOIs
Publication statusPublished - 1 Nov 2017

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oxides
organic matter
fouling
carbohydrates
anti-infective agents
biofouling
wettability
graphene oxide
membrane proteins
porosity
permeability
proteins
molecular weight

Keywords

  • Antimicrobial
  • Graphene oxide
  • Microalgae filtration
  • Organic matter
  • PVDF

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Improving performance in algal organic matter filtration using polyvinylidene fluoride–graphene oxide nanohybrid membranes. / Chong, Woon Chan; Mahmoudi, Ebrahim; Chung, Ying Tao; Koo, Chai Hoon; Mohammad, Abdul Wahab; Kamarudin, Kamrul Fakir.

In: Algal Research, Vol. 27, 01.11.2017, p. 32-42.

Research output: Contribution to journalArticle

Chong, Woon Chan ; Mahmoudi, Ebrahim ; Chung, Ying Tao ; Koo, Chai Hoon ; Mohammad, Abdul Wahab ; Kamarudin, Kamrul Fakir. / Improving performance in algal organic matter filtration using polyvinylidene fluoride–graphene oxide nanohybrid membranes. In: Algal Research. 2017 ; Vol. 27. pp. 32-42.
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