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Removal of silica from aqueous solution by industrial solid ‘waste’ Fe(III)/Cr(III) hydroxide was investigated. Initial pH has no effect on the adsorption of silica in the pH range 4.0–10.0 studied. First, second order and Elovich kinetic models were used to study the adsorption process. The adsorption system followed second order and Elovich kinetics. Langmuir and Freundlich isotherms have been employed...
Industrial solid waste, Fe(III)/Cr(III) hydroxide, was investigated to assess the capacity for the removal of phosphate from aqueous solution. Langmuir and Freundlich isotherms were used to model the adsorption equilibrium data. The system follows both isotherms. Adsorption capacity was found to be 6.5mg/g. Kinetic studies show that the adsorption obeyed second order kinetics. Thermodynamic parameters...
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