Granular activated carbon (GAC) adsorptionphotocatalysis hybrid system in the removal of herbicide from water

Areerachakul, N; Vigneswaran, S; Ngo, HH; Kandasamy, J

Granular activated carbon (GAC) adsorptionphotocatalysis hybrid system in the removal of herbicide from water

Areerachakul, N Vigneswaran, S Ngo, HH Kandasamy, J

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Publisher:: Elsevier Science Bv
Publication Type:: Journal Article
Citation:: Areerachakul Nathaporn et al. 2007, 'Granular activated carbon (GAC) adsorption-photocatalysis hybrid system in the removal of herbicide from water', Elsevier Science Bv, vol. 55, no. 2, pp. 206-211.
Issue Date:: 2007

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Field	Value	Language
dc.contributor.author	Areerachakul, N	en_US
dc.contributor.author	Vigneswaran, S	en_US
dc.contributor.author	Ngo, HH	en_US
dc.contributor.author	Kandasamy, J	en_US
dc.date.accessioned	2009-06-26T04:10:51Z
dc.date.available	2009-06-26T04:10:51Z
dc.date.issued	2007	en_US
dc.identifier	2006011374	en_US
dc.identifier.citation	Areerachakul Nathaporn et al. 2007, 'Granular activated carbon (GAC) adsorption-photocatalysis hybrid system in the removal of herbicide from water', Elsevier Science Bv, vol. 55, no. 2, pp. 206-211.	en_US
dc.identifier.issn	1383-5866	en_US
dc.identifier.other	C1	en_US
dc.identifier.uri	http://hdl.handle.net/10453/564
dc.description.abstract	The performance of the granular activated carbon (GAC) fixed bed adsorption, the continuous photocatalysis systems and a combination of the two were studied to evaluate their capabilities in removing the herbicide of metsulfuron-methyl (MM) from waste water. Columns packed with GAC at different bed depths were operated at different filtration rates over a period of several weeks. Removal of MM via adsorption using GAC fixed beds of 5, 10 and 15 cm depths (operated at meter per hour) achieved a removal of 35, 55 and 65% of MM respectively. In the continuous photocatalysis system, heterogeneous photocatalysis with TiO2 was used to degrade MM. The system achieved removal rates between 40 and 60%. GAC photocatalysis hybrid system is a coupling of GAC fixed bed adsorption and the continuous photocatalysis system where the effluent from the former was fed to the later. TiO2 and small amount of powder activated carbon (PAC) were used as the catalyst in the photocatalysis system. The system had a high removal rate of over 90%. The retention time of the photocatalysis system was less than 10 min. This system allows a greater degree of flexibility in the manner the system can be operated.	en_US
dc.publisher	Elsevier Science Bv	en_US
dc.relation.ispartof	Separation And Purification Technology	en_US
dc.relation.hasversion	Accepted manuscript version	en_US
dc.relation.isbasedon	http://dx.doi.org/10.1016/j.seppur.2006.12.007	en_US
dc.rights	NOTICE: this is the author’s version of a work that was accepted for publication in Separation and Purification Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Separation and Purification Technology, Volume 55, Issue 2, 15 June 2007, Pages 206–211 DOI: http://dx.doi.org/10.1016/j.seppur.2006.12.007	en_US
dc.title	Granular activated carbon (GAC) adsorptionphotocatalysis hybrid system in the removal of herbicide from water	en_US
dc.type	Journal article
utslib.citation.volume	55	en_US
utslib.citation.number	2	en_US
utslib.location	Amsterdam Netherlands	en_US
utslib.citation.startpage	206	en_US
utslib.citation.endpage	211	en_US
utslib.identifier.org	Engineering	en_US
utslib.copyright.status	closed_access

Abstract:

The performance of the granular activated carbon (GAC) fixed bed adsorption, the continuous photocatalysis systems and a combination of the two were studied to evaluate their capabilities in removing the herbicide of metsulfuron-methyl (MM) from waste water. Columns packed with GAC at different bed depths were operated at different filtration rates over a period of several weeks. Removal of MM via adsorption using GAC fixed beds of 5, 10 and 15 cm depths (operated at meter per hour) achieved a removal of 35, 55 and 65% of MM respectively. In the continuous photocatalysis system, heterogeneous photocatalysis with TiO2 was used to degrade MM. The system achieved removal rates between 40 and 60%. GAC photocatalysis hybrid system is a coupling of GAC fixed bed adsorption and the continuous photocatalysis system where the effluent from the former was fed to the later. TiO2 and small amount of powder activated carbon (PAC) were used as the catalyst in the photocatalysis system. The system had a high removal rate of over 90%. The retention time of the photocatalysis system was less than 10 min. This system allows a greater degree of flexibility in the manner the system can be operated.

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http://hdl.handle.net/10453/564