Development of graphene oxide (GO)/multi-walled carbon nanotubes (MWCNTs) nanocomposite conductive membranes for electrically enhanced fouling mitigation

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13 Citations (Scopus)

Abstract

In this study, we fabricated electrically conductive membranes using graphene oxide (GO) and multi-walled carbon nanotubes (MWCNTs) via the blending phase inversion method. The effects of the membrane polymer: solvent and the GO: MWCNTs weight ratios on the electrical conductivity of membrane were investigated. It was discovered that batch M10 membranes exhibited moderately high electrical conductivity due to incorporation of carbon nanomaterials forming continuous electron paths across the membrane matrix. Using this optimized batch of membranes, performance test was conducted on the palm oil mill effluent (POME). In general, the flux decline was reduced with the continuous and intermittent electric fields. The presence of an electric field exerted a stronger repulsion force to repel the foulant and thus reduced the blockage of the membrane surfaces. As compared to the absence of electric field, M10(c)-5, M10(c)-10, and M10(c)-20 had improved the normalized flux by 108.14%, 90.54%, and 89.69%, respectively, with the continuous electric field of 300 V/cm. M10(c)-5 exhibited the optimal extent of fouling mitigation, as attributed to the enhancement of membrane electrical conductivity without compromising other membrane characteristics. Overall, this study showed that, with the right membrane formulation, a good conductive membrane with electrically-enhanced antifouling properties can be fabricated.

Original languageEnglish
Pages (from-to)189-201
Number of pages13
JournalJournal of Membrane Science
Volume552
DOIs
Publication statusPublished - 15 Apr 2018

Fingerprint

Nanocomposites
Carbon Nanotubes
fouling
Graphite
Fouling
Oxides
Graphene
Carbon nanotubes
nanocomposites
graphene
carbon nanotubes
membranes
Membranes
oxides
Electric Conductivity
Electric fields
electric fields
electrical resistivity
Fluxes
antifouling

Keywords

  • Fouling mitigation
  • Graphene oxide
  • Multi-walled carbon nanotubes
  • Nanocomposite conductive membrane
  • Palm oil mill effluent

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

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title = "Development of graphene oxide (GO)/multi-walled carbon nanotubes (MWCNTs) nanocomposite conductive membranes for electrically enhanced fouling mitigation",
abstract = "In this study, we fabricated electrically conductive membranes using graphene oxide (GO) and multi-walled carbon nanotubes (MWCNTs) via the blending phase inversion method. The effects of the membrane polymer: solvent and the GO: MWCNTs weight ratios on the electrical conductivity of membrane were investigated. It was discovered that batch M10 membranes exhibited moderately high electrical conductivity due to incorporation of carbon nanomaterials forming continuous electron paths across the membrane matrix. Using this optimized batch of membranes, performance test was conducted on the palm oil mill effluent (POME). In general, the flux decline was reduced with the continuous and intermittent electric fields. The presence of an electric field exerted a stronger repulsion force to repel the foulant and thus reduced the blockage of the membrane surfaces. As compared to the absence of electric field, M10(c)-5, M10(c)-10, and M10(c)-20 had improved the normalized flux by 108.14{\%}, 90.54{\%}, and 89.69{\%}, respectively, with the continuous electric field of 300 V/cm. M10(c)-5 exhibited the optimal extent of fouling mitigation, as attributed to the enhancement of membrane electrical conductivity without compromising other membrane characteristics. Overall, this study showed that, with the right membrane formulation, a good conductive membrane with electrically-enhanced antifouling properties can be fabricated.",
keywords = "Fouling mitigation, Graphene oxide, Multi-walled carbon nanotubes, Nanocomposite conductive membrane, Palm oil mill effluent",
author = "Ho, {K. C.} and {Yeit Haan}, Teow and Mohammad, {Abdul Wahab} and Lee, {P. H.} and {Wei Lun}, Ang",
year = "2018",
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language = "English",
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T1 - Development of graphene oxide (GO)/multi-walled carbon nanotubes (MWCNTs) nanocomposite conductive membranes for electrically enhanced fouling mitigation

AU - Ho, K. C.

AU - Yeit Haan, Teow

AU - Mohammad, Abdul Wahab

AU - Lee, P. H.

AU - Wei Lun, Ang

PY - 2018/4/15

Y1 - 2018/4/15

N2 - In this study, we fabricated electrically conductive membranes using graphene oxide (GO) and multi-walled carbon nanotubes (MWCNTs) via the blending phase inversion method. The effects of the membrane polymer: solvent and the GO: MWCNTs weight ratios on the electrical conductivity of membrane were investigated. It was discovered that batch M10 membranes exhibited moderately high electrical conductivity due to incorporation of carbon nanomaterials forming continuous electron paths across the membrane matrix. Using this optimized batch of membranes, performance test was conducted on the palm oil mill effluent (POME). In general, the flux decline was reduced with the continuous and intermittent electric fields. The presence of an electric field exerted a stronger repulsion force to repel the foulant and thus reduced the blockage of the membrane surfaces. As compared to the absence of electric field, M10(c)-5, M10(c)-10, and M10(c)-20 had improved the normalized flux by 108.14%, 90.54%, and 89.69%, respectively, with the continuous electric field of 300 V/cm. M10(c)-5 exhibited the optimal extent of fouling mitigation, as attributed to the enhancement of membrane electrical conductivity without compromising other membrane characteristics. Overall, this study showed that, with the right membrane formulation, a good conductive membrane with electrically-enhanced antifouling properties can be fabricated.

AB - In this study, we fabricated electrically conductive membranes using graphene oxide (GO) and multi-walled carbon nanotubes (MWCNTs) via the blending phase inversion method. The effects of the membrane polymer: solvent and the GO: MWCNTs weight ratios on the electrical conductivity of membrane were investigated. It was discovered that batch M10 membranes exhibited moderately high electrical conductivity due to incorporation of carbon nanomaterials forming continuous electron paths across the membrane matrix. Using this optimized batch of membranes, performance test was conducted on the palm oil mill effluent (POME). In general, the flux decline was reduced with the continuous and intermittent electric fields. The presence of an electric field exerted a stronger repulsion force to repel the foulant and thus reduced the blockage of the membrane surfaces. As compared to the absence of electric field, M10(c)-5, M10(c)-10, and M10(c)-20 had improved the normalized flux by 108.14%, 90.54%, and 89.69%, respectively, with the continuous electric field of 300 V/cm. M10(c)-5 exhibited the optimal extent of fouling mitigation, as attributed to the enhancement of membrane electrical conductivity without compromising other membrane characteristics. Overall, this study showed that, with the right membrane formulation, a good conductive membrane with electrically-enhanced antifouling properties can be fabricated.

KW - Fouling mitigation

KW - Graphene oxide

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KW - Nanocomposite conductive membrane

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