Coal fly ash, an industrial solid waste, was found to have a good adsorption capacity for iron. The effect of various parameters affecting the adsorption, such as bed depth, initial concentration of solute, pH etc. has been determined by column studies. The adsorption of iron on coal fly ash conforms to Freundlich's adsorption model. Removal of iron from several natural water samples was investigated and showed the effectiveness for iron removal from natural water. The common water quality parameters were analysed in the influent and effluent waters.
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De et al. (1990) studied this question.
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