Inderscience Publishers

Arsenic(III) removal by adsorption on sawdust carbon

Studies on the removal of As(III) by adsorption on sawdust and sawdust carbon have been carried out at room temperature (25 ± 1°C). The adsorption isotherm of As(III) on sawdust carbon was obtained in a batch reactor. The process of uptake follows the first-order adsorption rate expression and obeys the Langmuir and Freundlich model of adsorption. The mass transfer coefficients as a function of initial sorbate concentration have been determined. Parameters such as pH and absorbent dose were studied. Maximum adsorption capacity was observed at pH 7.0.

Keywords: adsorption, As(III) removal, mass transfer coefficient, sawdust carbon

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