Preparation and Adsorption Property of Extractant Microcapsulefor Extracting Uranium

FENG Yu; LANG Zhesi; SU Yantao; CHEN Shusen

doi:10.7538/yzk.2020.youxian.0383

Atomic Energy Science and Technology > 2021 > 55(5): 795-802. > DOI: 10.7538/yzk.2020.youxian.0383

FENG Yu, LANG Zhesi, SU Yantao, CHEN Shusen. Preparation and Adsorption Property of Extractant Microcapsulefor Extracting Uranium[J]. Atomic Energy Science and Technology, 2021, 55(5): 795-802. DOI: 10.7538/yzk.2020.youxian.0383

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Preparation and Adsorption Property of Extractant Microcapsulefor Extracting Uranium

Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing 101149, China
China National Uranium Cooperation, Beijing 100013, China

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Abstract

Abstract

In order to solve the problems of solvent loss and emulsification in extraction, combining the characteristics of extraction and ion exchange, microcapsules containing D2EHPA (or P204) extractants were prepared by solvent evaporation method with polysulfone as shell material. The influences of dispersants, diluent, surfactant and sodium chloride were investigated, and the optimal reaction condition was determined. When xylene is used as diluent and the extract concentration of P204 is 50%, the adsorption capacity of uranium on the microcapsule reaches more than 40 mg/g. When using the sulfuric acid as desorbent with concentration of 100 g/L, the desorption rate of aranium reaches 99%. Microcapsules containing P204 extractants with polysulfone as shell material have good adsorption properties in low concentration uranyl solution and can be reused after desorption.
- microcapsule,
- extractant,
- solvent evaporation method,
- uranium

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Preparation and Adsorption Property of Extractant Microcapsulefor Extracting Uranium

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