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>Study of chlordecone and hexachlorocyclohexane adsorption on chemically modifled activated carbons prepared from sugarcane bagasse
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Study of chlordecone and hexachlorocyclohexane adsorption on chemically modifled activated carbons prepared from sugarcane bagasse
Large amount of sugarcane residues results from the industrial production of sugar in Guadeloupe (French West Indies). These residues, called bagasse, can be used for the production of activated carbons (ACs) with a high specific area [1]. The adsorption of two organochlorine pesticides, chlordecone (CLD) and p-hexachlorocyclohexane (P-HCH), onto bagasse activated carbons was studied previously [2]. Among the samples tested two ACs called, Bag-P1.5 and Bag-H2O, were the most effective samples to adsorb CLD and P-HCH. Bag-PL5 was prepared by chemical activation with H3PO4 whereas Bag-H2O prepared by physical activation with H2O. Adsorption of CLD on ACs surface would be probably due to hydrophobic interactions and would increase with the amount of graphitic and carbonyl groups [2]. On the other hand adsorption of P-HCH increased with the amount of carboxylic groups which can create hydrogen bond with the chlorine atoms.
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