Submerged membrane filtration adsorption hybrid system for the removal of organic micropollutants from a water reclamation plant reverse osmosis concentrate

Shanmuganathan, S; Loganathan, P; Kazner, C; Johir, MAH; Vigneswaran, S

Submerged membrane filtration adsorption hybrid system for the removal of organic micropollutants from a water reclamation plant reverse osmosis concentrate

Shanmuganathan, S Loganathan, P Kazner, C Johir, MAH

Vigneswaran, S

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Publication Type:: Journal Article
Citation:: Desalination, 2017, 401 pp. 134 - 141
Issue Date:: 2017-01-02

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Field	Value	Language
dc.contributor.author	Shanmuganathan, S	en_US
dc.contributor.author	Loganathan, P	en_US
dc.contributor.author	Kazner, C	en_US
dc.contributor.author	Johir, MAH https://orcid.org/0000-0001-6222-6943	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.date.available	2020-05-25T19:02:43Z
dc.date.issued	2017-01-02	en_US
dc.identifier.citation	Desalination, 2017, 401 pp. 134 - 141	en_US
dc.identifier.issn	0011-9164	en_US
dc.identifier.uri	http://hdl.handle.net/10453/106175
dc.description.abstract	© 2016 Elsevier B.V. Reverse osmosis (RO) is a widespread water treatment process utilised in water reuse applications. However, the improper discharge of RO concentrate (ROC) containing organic micropollutants such as pharmaceuticals into the environment may cause potential health risks to non-target species and particularly those in aquatic environments. A study was conducted using a submerged membrane-filtration/granular activated carbon (GAC) adsorption hybrid system to remove organic micropollutants from a water treatment plant ROC by initially adding 10 g GAC /L of membrane reactor volume with 10% daily GAC replacement. The percentage of dissolved organic carbon removal varied from 60% to 80% over an operation lasting 10 days. Removal of organic micropollutants was almost complete for virtually all compounds. Of the 19 micropollutants tested, only two remained (the less hydrophobic DEET 27 ng/L and the hydrophilic sulfamethoxazole 35 ng/L) below 80% removal on day 1, while five of the most hydrophobic micropollutants were detectable in very small concentrations (< 5–10 ng/L) with > 89%–> 99% being removed. High percentages of micropollutants were removed probably because of their high hydrophobicity or they had positive or neutral charges and therefore they were electrostatically adsorbed to the negatively charged GAC.	en_US
dc.relation.ispartof	Desalination	en_US
dc.relation.isbasedon	10.1016/j.desal.2016.07.048	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Submerged membrane filtration adsorption hybrid system for the removal of organic micropollutants from a water reclamation plant reverse osmosis concentrate	en_US
dc.type	Journal Article
utslib.citation.volume	401	en_US
utslib.for	0305 Organic Chemistry	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 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.publication-status	Published	en_US
pubs.volume	401	en_US

Abstract:

© 2016 Elsevier B.V. Reverse osmosis (RO) is a widespread water treatment process utilised in water reuse applications. However, the improper discharge of RO concentrate (ROC) containing organic micropollutants such as pharmaceuticals into the environment may cause potential health risks to non-target species and particularly those in aquatic environments. A study was conducted using a submerged membrane-filtration/granular activated carbon (GAC) adsorption hybrid system to remove organic micropollutants from a water treatment plant ROC by initially adding 10 g GAC /L of membrane reactor volume with 10% daily GAC replacement. The percentage of dissolved organic carbon removal varied from 60% to 80% over an operation lasting 10 days. Removal of organic micropollutants was almost complete for virtually all compounds. Of the 19 micropollutants tested, only two remained (the less hydrophobic DEET 27 ng/L and the hydrophilic sulfamethoxazole 35 ng/L) below 80% removal on day 1, while five of the most hydrophobic micropollutants were detectable in very small concentrations (< 5–10 ng/L) with > 89%–> 99% being removed. High percentages of micropollutants were removed probably because of their high hydrophobicity or they had positive or neutral charges and therefore they were electrostatically adsorbed to the negatively charged GAC.

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http://hdl.handle.net/10453/106175