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Chemosphere. 2005 Sep;60(11):1600-7. Epub 2005 Apr 9.

Adsorption kinetics and isotherms of pesticides onto activated carbon-cloth.

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  • 1Chemistry Department, Akdeniz University, 07058 Antalya, Turkey. eayranci@akdeniz.edu.tr

Abstract

Adsorption of pesticides ametryn, aldicarb, dinoseb and diuron from aqueous solution onto high specific area activated carbon-cloth was studied. Kinetics of adsorption was followed by in situ UV-spectroscopy and the data were treated according to various rate models. The extent of adsorption was determined at the end of 125 min adsorption period. Rate constants and the extent of adsorption for the four pesticides were found to follow the order: dinoseb > ametryn > diuron > aldicarb. Adsorption isotherms were derived at 25 degrees C on the basis of batch analysis. Isotherm data were treated according to Langmuir and Freundlich models. The fits of experimental data to these equations were examined. The types of interactions between the surface and pesticide molecules were discussed.

[PubMed - indexed for MEDLINE]
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