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Original Articles

Adsorption of glyphosate onto activated carbon derived from waste newspaper

, &
Pages 321-326 | Received 21 Dec 2009, Accepted 20 Mar 2010, Published online: 03 Aug 2012
 

Abstract

This paper investigates the ability of activated carbon derived from waste newspaper (WNAC) to remove pesticide glyphosate from aqueous solution. The influence of initial pH was first studied. It was found that the WNAC presented the highest uptake capacity at pH 2.5. Adsorption isotherm models such as Langmuir, Freundlich and Redlich-Peterson were used to describe the adsorption of glyphosate by WNAC. The results show that the Langmuir adsorption isotherm model best fits the experimental data. The maximum adsorption capacity of WNAC is found to be 48.4 mg/g.

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