Waste red mud, an industrial byproduct, generated during the processing of bauxite ore, is recycled for the adsorption of forosol blue, a textile dye from the aqueous solution and textile wastewater treatment. Adsorption kinetics were studied using the parameters such as dye concentration, adsorbent dose, agitation time and pH. Adsorption followed first order expression. Red mud was found efficient in both homogeneous as well as heterogeneous system. Adsorption was nearly quantitative at pH 2.0. Effect of pH and adsorption studies suggests that the mechanism of adsorption is mostly ion exchange.
This paper was presented in International Conference of chemistry and Environment – Dec 2005. The full paper can be made available on request.
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