Efficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method

Summary: Current photocatalytic uranium (U) extraction methods have intrinsic obstacles, such as the recombination of charge carriers, and the deactivation of catalysts by extracted U. Here we show that, by applying a bias potential on the photocatalyst, the photoelectrochemical (PEC) method can add...

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Autores principales:	Yin Ye, Jian Jin, Yanru Liang, Zemin Qin, Xin Tang, Yanyue Feng, Miao Lv, Shiyu Miao, Cui Li, Yanlong Chen, Fan Chen, Yuheng Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Chemistry Environmental chemical engineering Analytical chemistry Environmental chemistry Science Q
Acceso en línea:	https://doaj.org/article/dccf1440057644a78b8075889e2465fd
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spelling	oai:doaj.org-article:dccf1440057644a78b8075889e2465fd2021-11-20T05:08:34ZEfficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method2589-004210.1016/j.isci.2021.103230https://doaj.org/article/dccf1440057644a78b8075889e2465fd2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2589004221011986https://doaj.org/toc/2589-0042Summary: Current photocatalytic uranium (U) extraction methods have intrinsic obstacles, such as the recombination of charge carriers, and the deactivation of catalysts by extracted U. Here we show that, by applying a bias potential on the photocatalyst, the photoelectrochemical (PEC) method can address these limitations. We demonstrate that, owing to efficient spatial charge-carriers separation driven by the applied bias, the PEC method enables efficient and durable U extraction. The effects of multiple operation conditions are investigated. The U extraction proceeds via single-step one-electron reduction, resulting in the formation of pentavalent U, which can facilitate future studies on this often-overlooked U species. In real seepage water the PEC method achieves an extraction capacity of 0.67 gU m−3·h−1 without deactivation for 156 h continuous operation, which is 17 times faster than the photocatalytic method. This work provides an alternative tool for U resource recovery and facilitates future studies on U(V) chemistry.Yin YeJian JinYanru LiangZemin QinXin TangYanyue FengMiao LvShiyu MiaoCui LiYanlong ChenFan ChenYuheng WangElsevierarticleChemistryEnvironmental chemical engineeringAnalytical chemistryEnvironmental chemistryScienceQENiScience, Vol 24, Iss 11, Pp 103230- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemistry Environmental chemical engineering Analytical chemistry Environmental chemistry Science Q
spellingShingle	Chemistry Environmental chemical engineering Analytical chemistry Environmental chemistry Science Q Yin Ye Jian Jin Yanru Liang Zemin Qin Xin Tang Yanyue Feng Miao Lv Shiyu Miao Cui Li Yanlong Chen Fan Chen Yuheng Wang Efficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method
description	Summary: Current photocatalytic uranium (U) extraction methods have intrinsic obstacles, such as the recombination of charge carriers, and the deactivation of catalysts by extracted U. Here we show that, by applying a bias potential on the photocatalyst, the photoelectrochemical (PEC) method can address these limitations. We demonstrate that, owing to efficient spatial charge-carriers separation driven by the applied bias, the PEC method enables efficient and durable U extraction. The effects of multiple operation conditions are investigated. The U extraction proceeds via single-step one-electron reduction, resulting in the formation of pentavalent U, which can facilitate future studies on this often-overlooked U species. In real seepage water the PEC method achieves an extraction capacity of 0.67 gU m−3·h−1 without deactivation for 156 h continuous operation, which is 17 times faster than the photocatalytic method. This work provides an alternative tool for U resource recovery and facilitates future studies on U(V) chemistry.
format	article
author	Yin Ye Jian Jin Yanru Liang Zemin Qin Xin Tang Yanyue Feng Miao Lv Shiyu Miao Cui Li Yanlong Chen Fan Chen Yuheng Wang
author_facet	Yin Ye Jian Jin Yanru Liang Zemin Qin Xin Tang Yanyue Feng Miao Lv Shiyu Miao Cui Li Yanlong Chen Fan Chen Yuheng Wang
author_sort	Yin Ye
title	Efficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method
title_short	Efficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method
title_full	Efficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method
title_fullStr	Efficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method
title_full_unstemmed	Efficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method
title_sort	efficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/dccf1440057644a78b8075889e2465fd
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Efficient and durable uranium extraction from uranium mine tailings seepage water via a photoelectrochemical method

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