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Ceratophyllum demersum was used to remove U(VI) from aqueous solution. Effects of various adsorption parameters such as pH, shaking time, initial U(VI) concentration, and temperature were investigated. The optimum pH… Click to show full abstract
Ceratophyllum demersum was used to remove U(VI) from aqueous solution. Effects of various adsorption parameters such as pH, shaking time, initial U(VI) concentration, and temperature were investigated. The optimum pH for U(VI) removal was 5.0. Pseudo-first-order kinetic model and Langmuir isotherm model could best describe the adsorption process. The maximum monolayer adsorption capacity was 140.45 mg/g. Thermodynamic calculations suggested that the U(VI) adsorption process was spontaneous and exothermic. The amino, hydroxyl, and carbonyl groups on the algal surface could contribute to U(VI) adsorption. The present study suggested that C. demersum biomass could be an efficient biosorbent to remove U(VI) contaminants.
Journal Title: Journal of Radioanalytical and Nuclear Chemistry
Year Published: 2017
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