Chelating polymer modified P84 nanofiltration (NF) hollow fiber membranes for high efficient heavy metal removal

Jie Gao; Shi Peng Sun; Wen Ping Zhu; Tai Shung Chung

doi:10.1016/j.watres.2014.06.006

Chelating polymer modified P84 nanofiltration (NF) hollow fiber membranes for high efficient heavy metal removal

Jie Gao, Shi Peng Sun, Wen Ping Zhu, Tai Shung Chung^*

^*Corresponding author for this work

Water Desalination & Reuse Center

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

246 Scopus citations

Abstract

High performance nanofiltration (NF) membranes for heavy metal removal have been molecularly designed by adsorption of chelating polymers containing negatively charged functional groups such as poly (acrylic acid-co-maleic acid) (PAM), poly (acrylic acid) (PAA) and poly (dimethylamine-co-epichlorohydrin-co-ethylenediamine) (PDMED) on the positively charged polyethyleneimine (PEI) cross-linked P84 hollow fiber substrates. Not only do these chelating polymers change the membrane surface charge and pore size, but also provide an extra mean to remove heavy metal ions through adsorption in addition to traditional steric effect and Donnan exclusion. The adsorbed membranes have comparable water permeability and superior rejections to heavy metals, for instance, Pb(NO₃)₂, CuSO₄, NiCl₂, CdCl₂, ZnCl₂, Na₂Cr₂O₇ and Na₂HAsO₄, with rejections higher than 98%. The membranes also display excellent rejections to mixed ions with rejections more than 99%. The newly developed membranes show reasonably stability during 60-htests as well as multiple washes.

Original language	English (US)
Pages (from-to)	252-261
Number of pages	10
Journal	Water research
Volume	63
DOIs	https://doi.org/10.1016/j.watres.2014.06.006
State	Published - Oct 15 2014

Keywords

Cheating polymer
Heavy metal ions
Hollow fiber membrane
Hyperbranched polyethyleneimine
Nanofiltration
P84 polyimide

ASJC Scopus subject areas

Water Science and Technology
Ecological Modeling
Pollution
Waste Management and Disposal

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10.1016/j.watres.2014.06.006

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title = "Chelating polymer modified P84 nanofiltration (NF) hollow fiber membranes for high efficient heavy metal removal",

abstract = "High performance nanofiltration (NF) membranes for heavy metal removal have been molecularly designed by adsorption of chelating polymers containing negatively charged functional groups such as poly (acrylic acid-co-maleic acid) (PAM), poly (acrylic acid) (PAA) and poly (dimethylamine-co-epichlorohydrin-co-ethylenediamine) (PDMED) on the positively charged polyethyleneimine (PEI) cross-linked P84 hollow fiber substrates. Not only do these chelating polymers change the membrane surface charge and pore size, but also provide an extra mean to remove heavy metal ions through adsorption in addition to traditional steric effect and Donnan exclusion. The adsorbed membranes have comparable water permeability and superior rejections to heavy metals, for instance, Pb(NO3)2, CuSO4, NiCl2, CdCl2, ZnCl2, Na2Cr2O7 and Na2HAsO4, with rejections higher than 98%. The membranes also display excellent rejections to mixed ions with rejections more than 99%. The newly developed membranes show reasonably stability during 60-htests as well as multiple washes.",

keywords = "Cheating polymer, Heavy metal ions, Hollow fiber membrane, Hyperbranched polyethyleneimine, Nanofiltration, P84 polyimide",

author = "Jie Gao and Sun, {Shi Peng} and Zhu, {Wen Ping} and Chung, {Tai Shung}",

year = "2014",

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doi = "10.1016/j.watres.2014.06.006",

language = "English (US)",

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AU - Gao, Jie

AU - Sun, Shi Peng

AU - Zhu, Wen Ping

AU - Chung, Tai Shung

PY - 2014/10/15

Y1 - 2014/10/15

N2 - High performance nanofiltration (NF) membranes for heavy metal removal have been molecularly designed by adsorption of chelating polymers containing negatively charged functional groups such as poly (acrylic acid-co-maleic acid) (PAM), poly (acrylic acid) (PAA) and poly (dimethylamine-co-epichlorohydrin-co-ethylenediamine) (PDMED) on the positively charged polyethyleneimine (PEI) cross-linked P84 hollow fiber substrates. Not only do these chelating polymers change the membrane surface charge and pore size, but also provide an extra mean to remove heavy metal ions through adsorption in addition to traditional steric effect and Donnan exclusion. The adsorbed membranes have comparable water permeability and superior rejections to heavy metals, for instance, Pb(NO3)2, CuSO4, NiCl2, CdCl2, ZnCl2, Na2Cr2O7 and Na2HAsO4, with rejections higher than 98%. The membranes also display excellent rejections to mixed ions with rejections more than 99%. The newly developed membranes show reasonably stability during 60-htests as well as multiple washes.

AB - High performance nanofiltration (NF) membranes for heavy metal removal have been molecularly designed by adsorption of chelating polymers containing negatively charged functional groups such as poly (acrylic acid-co-maleic acid) (PAM), poly (acrylic acid) (PAA) and poly (dimethylamine-co-epichlorohydrin-co-ethylenediamine) (PDMED) on the positively charged polyethyleneimine (PEI) cross-linked P84 hollow fiber substrates. Not only do these chelating polymers change the membrane surface charge and pore size, but also provide an extra mean to remove heavy metal ions through adsorption in addition to traditional steric effect and Donnan exclusion. The adsorbed membranes have comparable water permeability and superior rejections to heavy metals, for instance, Pb(NO3)2, CuSO4, NiCl2, CdCl2, ZnCl2, Na2Cr2O7 and Na2HAsO4, with rejections higher than 98%. The membranes also display excellent rejections to mixed ions with rejections more than 99%. The newly developed membranes show reasonably stability during 60-htests as well as multiple washes.

KW - Cheating polymer

KW - Heavy metal ions

KW - Hollow fiber membrane

KW - Hyperbranched polyethyleneimine

KW - Nanofiltration

KW - P84 polyimide

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DO - 10.1016/j.watres.2014.06.006

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ER -

Chelating polymer modified P84 nanofiltration (NF) hollow fiber membranes for high efficient heavy metal removal

Abstract

Keywords

ASJC Scopus subject areas

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