Ultrathin graphene oxide membranes for the removal of humic acid

Julie J. Song; Yi Huang; Seung Woo Nam; Miao Yu; Jiyong Heo; Namguk Her; Joseph R.V. Flora; Yeomin Yoon

doi:10.1016/j.seppur.2015.02.032

Ultrathin graphene oxide membranes for the removal of humic acid

Julie J. Song, Yi Huang, Seung Woo Nam, Miao Yu, Jiyong Heo, Namguk Her, Joseph R.V. Flora, Yeomin Yoon

Environmental Science & Engineering

Research output: Contribution to journal › Article › peer-review

73 Scopus citations

Abstract

In this study, multiple layers of graphene oxide (GO) were coated on a commercially available polyethersulfone ultrafiltration membrane via simple vacuum filtration of a GO suspension. The effect of GO coating on the membrane performance and fouling resistance was examined, in terms of water flux, natural organic matter (NOM) rejection, and flux decline due to NOM fouling. The results showed that the water flux change of the permeate was minimal (less than ±10%), while NOM rejection was improved significantly by the GO coating (31%, 51%, and 67% for the GO-5 nm, GO-10 nm, and GO-30 nm membranes, respectively). The GO-coated membranes also enhanced membrane recovery and antifouling capabilities, due mainly to increased hydrophilicity of the GO-membrane surface. These observations suggest that the GO-coated membrane, prepared by a facile filtration process in the laboratory, facilitates removal of NOM from water and minimizes the associated membrane fouling.

Original language	English
Pages (from-to)	162-167
Number of pages	6
Journal	Separation and Purification Technology
Volume	144
DOIs	https://doi.org/10.1016/j.seppur.2015.02.032
State	Published - 15 Apr 2015

Bibliographical note

Funding Information:
This research was supported by a grant (code 14IFIP-B087385-01 ) from Industrial Facilities & Infrastructure Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government. This research was also supported by the Korea Ministry of Environment , ‘GAIA Project, 2012000550022.’

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

Keywords

Antifouling
Graphene oxide
Natural organic matter
Ultrafiltration
Water treatment

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10.1016/j.seppur.2015.02.032

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title = "Ultrathin graphene oxide membranes for the removal of humic acid",

abstract = "In this study, multiple layers of graphene oxide (GO) were coated on a commercially available polyethersulfone ultrafiltration membrane via simple vacuum filtration of a GO suspension. The effect of GO coating on the membrane performance and fouling resistance was examined, in terms of water flux, natural organic matter (NOM) rejection, and flux decline due to NOM fouling. The results showed that the water flux change of the permeate was minimal (less than ±10%), while NOM rejection was improved significantly by the GO coating (31%, 51%, and 67% for the GO-5 nm, GO-10 nm, and GO-30 nm membranes, respectively). The GO-coated membranes also enhanced membrane recovery and antifouling capabilities, due mainly to increased hydrophilicity of the GO-membrane surface. These observations suggest that the GO-coated membrane, prepared by a facile filtration process in the laboratory, facilitates removal of NOM from water and minimizes the associated membrane fouling.",

keywords = "Antifouling, Graphene oxide, Natural organic matter, Ultrafiltration, Water treatment",

author = "Song, {Julie J.} and Yi Huang and Nam, {Seung Woo} and Miao Yu and Jiyong Heo and Namguk Her and Flora, {Joseph R.V.} and Yeomin Yoon",

note = "Funding Information: This research was supported by a grant (code 14IFIP-B087385-01 ) from Industrial Facilities & Infrastructure Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government. This research was also supported by the Korea Ministry of Environment , {\textquoteleft}GAIA Project, 2012000550022.{\textquoteright} Publisher Copyright: {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

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doi = "10.1016/j.seppur.2015.02.032",

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AU - Song, Julie J.

AU - Huang, Yi

AU - Nam, Seung Woo

AU - Yu, Miao

AU - Heo, Jiyong

AU - Her, Namguk

AU - Flora, Joseph R.V.

AU - Yoon, Yeomin

N1 - Funding Information: This research was supported by a grant (code 14IFIP-B087385-01 ) from Industrial Facilities & Infrastructure Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government. This research was also supported by the Korea Ministry of Environment , ‘GAIA Project, 2012000550022.’ Publisher Copyright: © 2015 Elsevier B.V. All rights reserved.

PY - 2015/4/15

Y1 - 2015/4/15

N2 - In this study, multiple layers of graphene oxide (GO) were coated on a commercially available polyethersulfone ultrafiltration membrane via simple vacuum filtration of a GO suspension. The effect of GO coating on the membrane performance and fouling resistance was examined, in terms of water flux, natural organic matter (NOM) rejection, and flux decline due to NOM fouling. The results showed that the water flux change of the permeate was minimal (less than ±10%), while NOM rejection was improved significantly by the GO coating (31%, 51%, and 67% for the GO-5 nm, GO-10 nm, and GO-30 nm membranes, respectively). The GO-coated membranes also enhanced membrane recovery and antifouling capabilities, due mainly to increased hydrophilicity of the GO-membrane surface. These observations suggest that the GO-coated membrane, prepared by a facile filtration process in the laboratory, facilitates removal of NOM from water and minimizes the associated membrane fouling.

AB - In this study, multiple layers of graphene oxide (GO) were coated on a commercially available polyethersulfone ultrafiltration membrane via simple vacuum filtration of a GO suspension. The effect of GO coating on the membrane performance and fouling resistance was examined, in terms of water flux, natural organic matter (NOM) rejection, and flux decline due to NOM fouling. The results showed that the water flux change of the permeate was minimal (less than ±10%), while NOM rejection was improved significantly by the GO coating (31%, 51%, and 67% for the GO-5 nm, GO-10 nm, and GO-30 nm membranes, respectively). The GO-coated membranes also enhanced membrane recovery and antifouling capabilities, due mainly to increased hydrophilicity of the GO-membrane surface. These observations suggest that the GO-coated membrane, prepared by a facile filtration process in the laboratory, facilitates removal of NOM from water and minimizes the associated membrane fouling.

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KW - Graphene oxide

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KW - Water treatment

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Ultrathin graphene oxide membranes for the removal of humic acid

Abstract

Bibliographical note

Keywords

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