Adsorption of Herbicide onto Fly Ash Sample from Aqueous Solution

Kowit Suwannahong; Witsanusan Supa; Jutaluck Chaysuk; Torpong Kreetachat

doi:10.4028/www.scientific.net/AMR.955-959.2118

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 955-959Adsorption of Herbicide onto Fly Ash Sample from...

Adsorption of Herbicide onto Fly Ash Sample from Aqueous Solution

Abstract:

Applying of low cost adsorbent for herbicide capturing is an important area of research in environmental field. The present work reports the adsorption potential of fly ash, a waste from power stations, for removal of herbicides namely paraquat and alachlor from aqueous solution. Batch experiment was employed to investigate the adsorption of herbicide in aqueous solution. The maximum capacity of the fly ash to adsorb paraquat and alachlor was found to be 2.02 and 1.70 mmole.g^-1, respectively. The coefficient of adsorption on the basis of 3 models: Freundlich, Langmuir and Sips isotherm models were found. The results shown that the equilibrium data are better fitted by three-parameter models than two-parameter models. The experimental data agree to adsorption isotherms in the order of Sips > Langmuir > Freundlich isotherms.

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Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

2118-2122

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.2118

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Online since:

June 2014

Authors:

Kowit Suwannahong, Witsanusan Supa, Jutaluck Chaysuk, Torpong Kreetachat*

Keywords:

Adsorption Isotherm, Alachlor, Fly Ash (FA), Herbicide, Paraquat

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