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Study of UO_2~(2+) Sorption Onto Ca-Calcareous Soil

XU Jun-zheng

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Abstract

In order to investigate the sorption behavior of UO2+2 on Ca-calcareous soil,the batch technique was performed to study the effects of contact time,solid-to-liquid ratio,pH,and fulvic acid(FA) on the sorption of UO2+2.The results indicate that UO2+2 sorption on Ca-calcareous soil can achieve equilibrium in a very short time,and the sorption process accords with the pseudo-second-order kinetic model.The sorption process of UO2+2 on Ca-calcareous soil is an irreversible process;however the desorption is significantly enhanced when the concentration of FA increases to 10 mg/L.

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What this paper is about

In order to investigate the sorption behavior of UO2+2 on Ca-calcareous soil,the batch technique was performed to study the effects of contact time,solid-to-liquid ratio,pH,and fulvic acid(FA) on the sorption of UO2+2.The results indicate that UO2+2 sorption on Ca-calcareous soil can achieve equilibrium in a very short time,and the sorption process accords with the pseudo-second-order kinetic model.The sorption process of UO2+2 on Ca-calcareous soil is an irreversible process;however the desorption is significantly enhanced when the concentration of FA increases to 10 mg/L.

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Available abstract

In order to investigate the sorption behavior of UO2+2 on Ca-calcareous soil,the batch technique was performed to study the effects of contact time,solid-to-liquid ratio,pH,and fulvic acid(FA) on the sorption of UO2+2.The results indicate that UO2+2 sorption on Ca-calcareous soil can achieve equilibrium in a very short time,and the sorption process accords with the pseudo-second-order kinetic model.The sorption process of UO2+2 on Ca-calcareous soil is an irreversible process;however the desorption is significantly enhanced when the concentration of FA increases to 10 mg/L.

Key concepts: Sorption, Calcareous, Chemistry, Desorption, Environmental chemistry, Inorganic chemistry, Nuclear chemistry, Adsorption

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