Surface Engineering Design of Nano FeS@<i>Stenotrophomonas</i> sp. by Ultrasonic Chemical Method for Efficient U(VI) and Th(IV) Extraction

Zhongqiang Hu; Zhongkui Zhou; Jianping Guo; Yong Liu; Shunjing Yang; Yadan Guo; Liping Wang; Zhanxue Sun; Zhihui Yang

doi:10.3390/toxics11040297

Toxics (Mar 2023)

Surface Engineering Design of Nano FeS@<i>Stenotrophomonas</i> sp. by Ultrasonic Chemical Method for Efficient U(VI) and Th(IV) Extraction

Zhongqiang Hu,
Zhongkui Zhou,
Jianping Guo,
Yong Liu,
Shunjing Yang,
Yadan Guo,
Liping Wang,
Zhanxue Sun,
Zhihui Yang

Affiliations

Zhongqiang Hu: State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
Zhongkui Zhou: State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
Jianping Guo: State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
Yong Liu: State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
Shunjing Yang: State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
Yadan Guo: State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
Liping Wang: School of Environmental and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
Zhanxue Sun: State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
Zhihui Yang: School of Metallurgy and Environment, Central South University, Changsha 410083, China

DOI: https://doi.org/10.3390/toxics11040297
Journal volume & issue: Vol. 11, no. 4
p. 297

Abstract

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Nano-FeS has great potential for use in the management of radioactive contaminants. In this paper, we prepared a FeS@Stenotrophomonas sp. composite material by ultrasonic chemistry, and it showed excellent removal of uranium and thorium from the solution. Through optimization of the experimental conditions, it was found that the maximum adsorption capacities for uranium and thorium reached 481.9 and 407.5 mg/g for a composite made with a synthetic ratio of 1:1, pH 5 and 3.5, respectively, for U and Th, and sonication for 20 min. Compared with those of FeS or Stenotrophomonas alone, the removal capacity was greatly improved. The results of a mechanistic study indicated that efficient removal of the uranium and thorium was due to ion exchange, reduction, and microbial surface adsorption. FeS@Stenotrophomonas sp. could be applied to U(VI) and Th(IV) extraction for radioactive water.

Published in Toxics

ISSN: 2305-6304 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology
Website: http://www.mdpi.com/journal/toxics/

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