Biofouling potential reductions using a membrane hybrid system as a pre-treatment to seawater reverse osmosis

Jeong, S; Kim, LH; Kim, SJ; Nguyen, TV; Vigneswaran, S; Kim, IS

Biofouling potential reductions using a membrane hybrid system as a pre-treatment to seawater reverse osmosis

Jeong, S

Kim, LH Kim, SJ Nguyen, TV

Vigneswaran, S

Kim, IS

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Publication Type:: Journal Article
Citation:: Applied Biochemistry and Biotechnology, 2012, 167 (6), pp. 1716 - 1727
Issue Date:: 2012-07-01

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Field	Value	Language
dc.contributor.author	Jeong, S https://orcid.org/0000-0001-8995-3497	en_US
dc.contributor.author	Kim, LH	en_US
dc.contributor.author	Kim, SJ	en_US
dc.contributor.author	Nguyen, TV https://orcid.org/0000-0003-3893-1217	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.contributor.author	Kim, IS	en_US
dc.date.available	2011-12-20	en_US
dc.date.issued	2012-07-01	en_US
dc.identifier.citation	Applied Biochemistry and Biotechnology, 2012, 167 (6), pp. 1716 - 1727	en_US
dc.identifier.issn	0273-2289	en_US
dc.identifier.uri	http://hdl.handle.net/10453/23044
dc.description.abstract	Biofouling on reverse osmosis (RO) membranes is the most serious problem which affects desalination process efficiency and increases operation cost. The biofouling cannot be effectively removed by the conventional pre-treatment traditionally used in desalination plants. Hybrid membrane systems coupling the adsorption and/or coagulation with low-pressure membranes can be a sustainable pre-treatment in reducing membrane fouling and at the same time improving the feed water quality to the seawater reverse osmosis. The addition of powder activated carbon (PAC) of 1.5 g/L into submerged membrane system could help to remove significant amount of both hydrophobic compounds (81.4%) and hydrophilic compounds (73.3%). When this submerged membrane adsorption hybrid system (SMAHS) was combined with FeCl3 coagulation of 0.5 mg of Fe3+/L, dissolved organic carbon removal efficiency was excellent even with lower dose of PAC (0.5 g/L). Detailed microbial studies conducted with the SMAHS and the submerged membrane coagulation-adsorption hybrid system (SMCAHS) showed that these hybrid systems can significantly remove the total bacteria which contain also live cells. As a result, microbial adenosine triphosphate (ATP) as well as total ATP concentrations in treated seawater and foulants was considerably decreased. The bacteria number in feed water prior to RO reduced from 5.10E +06 cells/mL to 3.10E+03 cells/mL and 9.30E+03 cells/mL after SMAHS and SMCAHS were applied as pre-treatment, respectively. These led to a significant reduction of assimilable organic carbon (AOC) by 10.1 μg/L acetate-C when SMCAHS was used as a pre-treatment after 45-h RO operation. In this study, AOC method was modified to measure the growth of bacteria in seawater by using the Pseudomonas P.60 strain. © Springer Science+Business Media, LLC 2012.	en_US
dc.relation.ispartof	Applied Biochemistry and Biotechnology	en_US
dc.relation.isbasedon	10.1007/s12010-011-9514-6	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Adenosine Triphosphate	en_US
dc.subject.mesh	Membranes, Artificial	en_US
dc.subject.mesh	Chromatography, Liquid	en_US
dc.subject.mesh	Water Microbiology	en_US
dc.subject.mesh	Seawater	en_US
dc.subject.mesh	Osmosis	en_US
dc.title	Biofouling potential reductions using a membrane hybrid system as a pre-treatment to seawater reverse osmosis	en_US
dc.type	Journal Article
utslib.citation.volume	6	en_US
utslib.citation.volume	167	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	06 Biological Sciences	en_US
utslib.for	10 Technology	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	closed_access
pubs.issue	6	en_US
pubs.publication-status	Published	en_US
pubs.volume	167	en_US

Abstract:

Biofouling on reverse osmosis (RO) membranes is the most serious problem which affects desalination process efficiency and increases operation cost. The biofouling cannot be effectively removed by the conventional pre-treatment traditionally used in desalination plants. Hybrid membrane systems coupling the adsorption and/or coagulation with low-pressure membranes can be a sustainable pre-treatment in reducing membrane fouling and at the same time improving the feed water quality to the seawater reverse osmosis. The addition of powder activated carbon (PAC) of 1.5 g/L into submerged membrane system could help to remove significant amount of both hydrophobic compounds (81.4%) and hydrophilic compounds (73.3%). When this submerged membrane adsorption hybrid system (SMAHS) was combined with FeCl3 coagulation of 0.5 mg of Fe3+/L, dissolved organic carbon removal efficiency was excellent even with lower dose of PAC (0.5 g/L). Detailed microbial studies conducted with the SMAHS and the submerged membrane coagulation-adsorption hybrid system (SMCAHS) showed that these hybrid systems can significantly remove the total bacteria which contain also live cells. As a result, microbial adenosine triphosphate (ATP) as well as total ATP concentrations in treated seawater and foulants was considerably decreased. The bacteria number in feed water prior to RO reduced from 5.10E +06 cells/mL to 3.10E+03 cells/mL and 9.30E+03 cells/mL after SMAHS and SMCAHS were applied as pre-treatment, respectively. These led to a significant reduction of assimilable organic carbon (AOC) by 10.1 μg/L acetate-C when SMCAHS was used as a pre-treatment after 45-h RO operation. In this study, AOC method was modified to measure the growth of bacteria in seawater by using the Pseudomonas P.60 strain. © Springer Science+Business Media, LLC 2012.

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http://hdl.handle.net/10453/23044