Adsorption characteristics and pH-dependence of metsulfuron-methyl onto activated carbons

Kim, SH; Ngo, HH

Adsorption characteristics and pH-dependence of metsulfuron-methyl onto activated carbons

Kim, SH Ngo, HH

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Publication Type:: Journal Article
Citation:: Separation Science and Technology, 2007, 42 (8), pp. 1731 - 1745
Issue Date:: 2007-06-01

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Field	Value	Language
dc.contributor.author	Kim, SH	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.date.issued	2007-06-01	en_US
dc.identifier.citation	Separation Science and Technology, 2007, 42 (8), pp. 1731 - 1745	en_US
dc.identifier.issn	0149-6395	en_US
dc.identifier.uri	http://hdl.handle.net/10453/3542
dc.description.abstract	The adsorption characteristics of metsulfuron-methyl (MM) onto powdered activated carbon (PAC) and granular activated carbon (GAC) were studied at varying solution pHs (4-9) and temperatures (20-40C). The dependence of pH was observed in aqueous solution with MM. The film mass transfer and intraparticle diffusion coefficients were estimated from concentration decay curves obtained in the batch adsorber. The maximum adsorption capacity decreased with increasing pH and temperature. Among the PAC used, the coconut based PAC had the best adsorption capacity. The adsorption isotherms could be plotted using the Freundlich and Toth models with a reasonable degree of accuracy. The overall adsorption isotherm such as the modified-Toth model should be applied. The performances of the fixed-bed GAC system was also simulated by a model developed. The objective of the present study was to investigate the adsorption and pH dependence behavior of MM onto PAC and GAC in order to diminish the environmental risk of MM pollution.	en_US
dc.relation.ispartof	Separation Science and Technology	en_US
dc.relation.isbasedon	10.1080/01496390701242178	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Adsorption characteristics and pH-dependence of metsulfuron-methyl onto activated carbons	en_US
dc.type	Journal Article
utslib.citation.volume	8	en_US
utslib.citation.volume	42	en_US
utslib.for	0301 Analytical Chemistry	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	closed_access
pubs.issue	8	en_US
pubs.publication-status	Published	en_US
pubs.volume	42	en_US

Abstract:

The adsorption characteristics of metsulfuron-methyl (MM) onto powdered activated carbon (PAC) and granular activated carbon (GAC) were studied at varying solution pHs (4-9) and temperatures (20-40C). The dependence of pH was observed in aqueous solution with MM. The film mass transfer and intraparticle diffusion coefficients were estimated from concentration decay curves obtained in the batch adsorber. The maximum adsorption capacity decreased with increasing pH and temperature. Among the PAC used, the coconut based PAC had the best adsorption capacity. The adsorption isotherms could be plotted using the Freundlich and Toth models with a reasonable degree of accuracy. The overall adsorption isotherm such as the modified-Toth model should be applied. The performances of the fixed-bed GAC system was also simulated by a model developed. The objective of the present study was to investigate the adsorption and pH dependence behavior of MM onto PAC and GAC in order to diminish the environmental risk of MM pollution.

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http://hdl.handle.net/10453/3542