Removal of dissolved organic matter fractions from reverse osmosis concentrate: Comparing granular activated carbon and ion exchange resin adsorbents

Jamil, S; Loganathan, P; Kandasamy, J; Listowski, A; Khourshed, C; Naidu, R; Vigneswaran, S

Removal of dissolved organic matter fractions from reverse osmosis concentrate: Comparing granular activated carbon and ion exchange resin adsorbents

Jamil, S Loganathan, P Kandasamy, J Listowski, A Khourshed, C Naidu, R Vigneswaran, S

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Publication Type:: Journal Article
Citation:: Journal of Environmental Chemical Engineering, 2019, 7 (3)
Issue Date:: 2019-06-01

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Field	Value	Language
dc.contributor.author	Jamil, S	en_US
dc.contributor.author	Loganathan, P	en_US
dc.contributor.author	Kandasamy, J	en_US
dc.contributor.author	Listowski, A	en_US
dc.contributor.author	Khourshed, C	en_US
dc.contributor.author	Naidu, R	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.date.available	2021-08-12T19:00:30Z
dc.date.issued	2019-06-01	en_US
dc.identifier.citation	Journal of Environmental Chemical Engineering, 2019, 7 (3)	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138072
dc.description.abstract	© 2019 Elsevier Ltd. All rights reserved. Reverse osmosis (RO) generates a concentrate (ROC) containing dangerous levels of pollutants including dissolved organic carbon (DOC). Adsorption experiments were conducted to study the effectiveness of removing DOC and its fractions from ROCs produced in a water reclamation plant using three adsorbents tested individually and in sequential combination. The ROCs had 23-42 mg/L DOC which contained 83-90% hydrophilics. These hydrophilics comprised 72-76% humics, 2-3% biopolymers, 5-7% building blocks, and 16-18% low molecular weight neutrals. Granular activated carbon (GAC) removed a larger amount of DOC than two strong base anion exchange resins (Purolite A502PS, Purolite A860S). In both batch and column experiments, the adsorptive removal of the hydrophobic fraction was greater for GAC than for the Purolites. Humics present in hydrophilic fraction was completely removed by Purolites but only partially by GAC. In the sequential adsorption batch experiment, GAC followed by Purolite treatment removed more hydrophobics, however, Purolite followed by GAC removed more humics. Almost 100% of humics was removed for all doses of adsorbents when Purolite served as the first treatment. It is concluded that the order of adsorbent use for effectively treating ROC depends on the target DOC fraction intended to be removed.	en_US
dc.relation.ispartof	Journal of Environmental Chemical Engineering	en_US
dc.relation.isbasedon	10.1016/j.jece.2019.103126	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.title	Removal of dissolved organic matter fractions from reverse osmosis concentrate: Comparing granular activated carbon and ion exchange resin adsorbents	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	7	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0907 Environmental Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	7	en_US

Abstract:

© 2019 Elsevier Ltd. All rights reserved. Reverse osmosis (RO) generates a concentrate (ROC) containing dangerous levels of pollutants including dissolved organic carbon (DOC). Adsorption experiments were conducted to study the effectiveness of removing DOC and its fractions from ROCs produced in a water reclamation plant using three adsorbents tested individually and in sequential combination. The ROCs had 23-42 mg/L DOC which contained 83-90% hydrophilics. These hydrophilics comprised 72-76% humics, 2-3% biopolymers, 5-7% building blocks, and 16-18% low molecular weight neutrals. Granular activated carbon (GAC) removed a larger amount of DOC than two strong base anion exchange resins (Purolite A502PS, Purolite A860S). In both batch and column experiments, the adsorptive removal of the hydrophobic fraction was greater for GAC than for the Purolites. Humics present in hydrophilic fraction was completely removed by Purolites but only partially by GAC. In the sequential adsorption batch experiment, GAC followed by Purolite treatment removed more hydrophobics, however, Purolite followed by GAC removed more humics. Almost 100% of humics was removed for all doses of adsorbents when Purolite served as the first treatment. It is concluded that the order of adsorbent use for effectively treating ROC depends on the target DOC fraction intended to be removed.

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http://hdl.handle.net/10453/138072