Remediation of uranium-contaminated acidic red soil by rice husk biochar

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成果类型：

期刊论文

作者：

Fu, Haiying;Wang, Shuai;Zhang, Hui;Dai, Zhongran;He, Guicheng;...

通讯作者：

Dexin Ding

作者机构：

[Ding, Dexin; Zhang, Hui; He, Guicheng; Dai, Zhongran; Li, Guangyue; Wang, Shuai; Fu, Haiying] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.

[Ding, Dexin; Zhang, Hui; He, Guicheng; Dai, Zhongran; Li, Guangyue; Wang, Shuai; Fu, Haiying] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Peoples R China.

通讯机构：

[Dexin Ding] K

Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, People’s Republic of China<&wdkj&>School of Resource Environment and Safety Engineering, University of South China, Hengyang, People’s Republic of China

语种：

英文

关键词：

Uranium;Rice husk biochar;Acid rain leaching;Immobilization;Red soil;Uranium-contaminated soil

期刊：

Environmental Science and Pollution Research

ISSN：

0944-1344

年：

2022

卷：

期：

页码：

77839-77850

DOI：

10.1007/s11356-022-20704-1

基金类别：

This work was supported by the National Natural Science Foundation of China (U1401231 and 12105139), National Key Research and Development Program of China (2021YFC2902104), Scientific Research Foundation of Science and Technology Department of Hunan Province (2021JJ40461), and Education Department of Hunan Province (20C1578).

机构署名：

本校为第一机构

院系归属：

核资源工程学院

摘要：

Uranium (U) in the U-contaminated acidic red soil exhibits high mobility. In the present study, rice husk was used to produce biochar to remediate U-contaminated red soil under acid precipitation. Firstly, batch adsorption experiments showed that the dissolution of alkaline substance in biochar could buffer the pH value of acidic solution. The equilibrium pH value had a crucial influence on biochar adsorption capacity of U, and the neutral equilibrium pH value was favorable for adsorption. Then, the incubation experiments of red soil with bioch...

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Remediation of uranium-contaminated acidic red soil by rice husk biochar

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