Granular activated carbon (GAC) adsorption-photocatalysis hybrid system in the removal of herbicide from water

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

Granular activated carbon (GAC) adsorption-photocatalysis hybrid system in the removal of herbicide from water

Areerachakul, N Vigneswaran, S

Ngo, HH

Kandasamy, J

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Publication Type:: Journal Article
Citation:: Separation and Purification Technology, 2007, 55 (2), pp. 206 - 211
Issue Date:: 2007-06-15

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Field	Value	Language
dc.contributor.author	Areerachakul, N	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Kandasamy, J	en_US
dc.date.issued	2007-06-15	en_US
dc.identifier.citation	Separation and Purification Technology, 2007, 55 (2), pp. 206 - 211	en_US
dc.identifier.issn	1383-5866	en_US
dc.identifier.uri	http://hdl.handle.net/10453/4192
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. © 2007 Elsevier B.V. All rights reserved.	en_US
dc.relation.ispartof	Separation and Purification Technology	en_US
dc.relation.isbasedon	10.1016/j.seppur.2006.12.007	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Granular activated carbon (GAC) adsorption-photocatalysis hybrid system in the removal of herbicide from water	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	55	en_US
utslib.for	090407 Process Control and Simulation	en_US
utslib.for	090404 Membrane and Separation Technologies	en_US
utslib.for	090409 Wastewater Treatment Processes	en_US
utslib.for	0301 Analytical Chemistry	en_US
utslib.for	0904 Chemical 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	closed_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	55	en_US

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. © 2007 Elsevier B.V. All rights reserved.

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http://hdl.handle.net/10453/4192