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A novel sorbent for the removal of uranyl ion was prepared by expanded rice husk powder. Batch adsorption experiments were performed on factors of p H,temperature, initial uranyl ion concentration, adsorbent dosage and contact time to evaluate the adsorption capacity. The results show that the saturation adsorption capacity is 5.7 mgág~(-1) using expanded rice husk powder treating uranyl ion aqueous solution(80 mgáL~(-1)) for 24 h at 25 °C with initial pH3. Adsorption process could be well described by Langmuir isotherm model. The adsorption kinetic data are fitted well with pseudo-second-order model. The results obtained show that expanded rice husk adsorbent is a promising adsorbent for the removal of uranium from aqueous solutions.
A novel sorbent for the removal of uranyl ion prepared prepared expanded husk powder. Batch fermentation experiments were performed on factors of p H, temperature, initial uranyl ion concentration, adsorbent dosage and contact time to evaluate the adsorption capacity. The results show that the saturation adsorption capacity is 5.7 mg? g -1 using expanded rice husk powder treating uranyl ion aqueous solution (80 mg? L -1) for 24 h at 25 ° C with initial pH 3. Adsorption process could well be described by Langmuir isotherm model. The adsorption kinetic data are fitted well with pseudo-second-order model. The results obtained show that expanded rice husk adsorbent is a promising adsorbent for the removal of uranium from aqueous solutions.