Analysis and processing of sulfate accumulation in uranium hydrometallurgy for acid in-situ leaching

Zhou, Wen; Huang, Kaimin; Yao, Yingming; Zhong, Hong; Niu, Yuqing; Wang, Shuai; Cao, Zhanfang

doi:10.1080/01496395.2019.1679835

Separation Science and Technology

2019

DOI: 10.1080/01496395.2019.1679835

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Analysis and processing of sulfate accumulation in uranium hydrometallurgy for acid in-situ leaching

Wen Zhou

Kaimin Huang

Yingming Yao

et al.

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“…7 If the pollution caused by uranium is not properly handled, it will pose a threat to the environment and human health and seriously affect the sustainable development of nuclear energy. 8,9 It is necessary to actively develop effective methods and materials for the selective extraction of uranium from aqueous solutions. 10,11 Therefore, researchers have been trying to study the method of selective extraction of uranium from aqueous solution for many years.…”

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Three-Dimensional Nano Polyaniline Modification Graphite Fiber as High-Capacity Electrode Material for Uranium (VI) Electrosorption

Cao

Gao

Gui

et al. 2022

J. Electrochem. Soc.

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To improve the adsorption performance of graphite felt, aniline was directly polymerized on the surface of graphite felt by electrochemical method. The material test results showed that the electropolymerized polyaniline presented a three-dimensional nanofiber structure and the specific surface area of the electrode increased from 24.23 to 42.17 m2/g after modification. The electrochemistry test results showed that the electrode had a large specific capacitance 144.6 F/g in 1 M NaCl at a sweep speed of 5mV/s. When pH = 4 and E = -0.9 V (vs. SCE), the adsorption capacity of the electrode can reach 187.8 mg/g. 94.6% adsorbed uranium can be eluted by 0.1M hydrochloric acid. After 7 cycles, the performance loss was only 25%, which indicated that the electrode had a good regeneration performance. The uranyl ions combined with the amino and imino groups of polyaniline on the electrode surface, and were partially reduced to U (V), which greatly improved the adsorption capacity of electrode. All the results show that the electrode had exceptional potential applications in the extraction of U(VI) from aqueous solution, and it provides a feasible method for U(VI) environmental pollution cleanup in uranium mining and fuel processing.

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confidence: 99%

Three-Dimensional Nano Polyaniline Modification Graphite Fiber as High-Capacity Electrode Material for Uranium (VI) Electrosorption

Cao

Gao

Gui

et al. 2022

J. Electrochem. Soc.

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Machine learning–based optimal design of the in-situ leaching process parameter (ISLPP) for the acid in-situ leaching of uranium

Wang,

Luo,

Qian

et al. 2023

Journal of Hydrology

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Analysis and processing of sulfate accumulation in uranium hydrometallurgy for acid in-situ leaching

Cited by 2 publications

References 20 publications

Three-Dimensional Nano Polyaniline Modification Graphite Fiber as High-Capacity Electrode Material for Uranium (VI) Electrosorption

Three-Dimensional Nano Polyaniline Modification Graphite Fiber as High-Capacity Electrode Material for Uranium (VI) Electrosorption

Machine learning–based optimal design of the in-situ leaching process parameter (ISLPP) for the acid in-situ leaching of uranium

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