Adsorption Characteristics and pHdependence of MetsulfuronMethyl onto Activated Carbons

Kim, S; Ngo, HH

Adsorption Characteristics and pHdependence of MetsulfuronMethyl onto Activated Carbons

Kim, S Ngo, HH

Permalink

Publisher:: Taylor & Francis
Publication Type:: Journal Article
Citation:: Kim Seoung-Hyun and Ngo Huu Hao 2007, 'Adsorption Characteristics and pH-dependence of Metsulfuron-Methyl onto Activated Carbons', Taylor & Francis Inc, vol. 42, no. 8, pp. 1731-1745.
Issue Date:: 2007

Closed Access

	Filename	Description	Size
	2007002668.pdf		219.03 kB		View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Kim, S	en_US
dc.contributor.author	Ngo, HH	en_US
dc.date.accessioned	2009-06-26T04:10:53Z
dc.date.available	2009-06-26T04:10:53Z
dc.date.issued	2007	en_US
dc.identifier	2007002668	en_US
dc.identifier.citation	Kim Seoung-Hyun and Ngo Huu Hao 2007, 'Adsorption Characteristics and pH-dependence of Metsulfuron-Methyl onto Activated Carbons', Taylor & Francis Inc, vol. 42, no. 8, pp. 1731-1745.	en_US
dc.identifier.issn	0149-6395	en_US
dc.identifier.other	C1	en_US
dc.identifier.uri	http://hdl.handle.net/10453/587
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 (20–408C). 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.publisher	Taylor & Francis	en_US
dc.relation.ispartof	Separation Science and Technology	en_US
dc.relation.isbasedon	http//dx.doi.org/10.1080/01496390701242178	en_US
dc.title	Adsorption Characteristics and pHdependence of MetsulfuronMethyl onto Activated Carbons	en_US
dc.type	Journal article
utslib.citation.volume	42	en_US
utslib.citation.number	8	en_US
utslib.location	Philadelphia USA	en_US
utslib.citation.startpage	1731	en_US
utslib.citation.endpage	1745	en_US
utslib.identifier.org	Engineering	en_US
utslib.copyright.status	closed_access

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 (20–408C). 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.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/587