Synergistic effects of hydrogen peroxide and phosphate on uranium(VI) immobilization: implications for the remediation of groundwater at decommissioned in situ leaching uranium mine

Li, Feng; Huang, Xixian; Wang, Shasha; Zhang, Hui; Ma, Jianhong; Ding, Yang; Ding, Dexin

doi:10.1007/s11356-023-30468-x

Cited by 1 publication

(1 citation statement)

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“…The rapid growth in demand for uranium resources and the mismatch between uranium mining and postprocessing have inevitably caused extensive soil pollution. − The radioactive element uranium in the soil is easily transferred to water sources, posing a serious threat to environmental safety and human health. − Implementing ecological governance of uranium-contaminated soils is an important prerequisite for ensuring sustainable development of nuclear energy and maintaining ecological balance. − Traditional soil remediation techniques, such as chemical leaching, electrical repair, and microbial remediation, have been explored as potential remediation techniques for uranium-contaminated soils. − However, they still encounter challenges such as soil nutrient depletion, high expenses, and lengthy timeframes. , Therefore, finding environmentally friendly and efficient methods to remediate soil contaminated with radioactive nuclides is a pressing issue that requires prompt attention.…”

Section: Introductionmentioning

confidence: 99%

Impact of Biochar Addition Levels on Remediation of Uranium-Stressed Soil: Evidence from 16S rDNA and Metabolomics

Feng,

Wang,

Wang

et al. 2024

ACS EST Eng.

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The addition of soil amendments to facilitate plantbased remediation of soil contaminated with radioactive nuclides is considered a promising approach. Here, we tested different levels of biochar to help clean uranium-contaminated soil in the potted plants. Adding 1% biochar had the best results in deactivating uranium, increasing soil enzyme activity, and promoting ryegrass growth. Microbiological and metabolomic analysis further revealed that 1 wt % biochar significantly enhanced the abundance of microorganisms such as Actinobacteriota and Myxococcota and accelerated the production of differential metabolites such as lipids and lipid-like molecules, organic acids and derivatives, and organic oxygen compounds. The analysis of biological and nonbiological interaction networks indicates that the coordinated interaction between bacteria, enzymes, and metabolites significantly improves the expression level of the ABC transporter's metabolic pathway. This enhances the resistance of living cells to uranium and maintains system homeostasis under uranium stress. This study provides an example of the application of biochar-assisted phytoremediation and offers theoretical guidance for the remediation of soil contaminated with radioactive nuclides.

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