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1 sie 2024 · Uranium is a naturally occurring radionuclide with chemical toxicity, derived from deposits formed through complex processes. In recent years, uranium utilization activities have increased uranium levels in the soil environment, posing serious threats to soil quality, food safety, and human health. Phytoextraction of uranium contamination is ...
5 lip 2021 · Uranium displays a higher mobility in alkaline soils than that in acidic soils, indicating that U is mobilized and released into soil solution with increasing pH (Selvakumar et al., 2018). This effect is attributed to the enhanced oxidation of U(IV) (sparingly soluble) to U(VI) (soluble) under alkaline conditions ( Wang et al., 2018a ).
23 mar 2022 · Increasing uranium (U) content in soils due to anthropogenic U contamination causes accumulation of U in plants, which greatly increases human health risks. This review identified the diverse...
1 lis 2022 · Radiological and environmental risk assessments of uranium require knowledge of its immediate and long-term behaviour in the soil system. To better understand U(VI) behaviour in contaminated soil, a mesocosm experiment was conducted from 2018 to 2021 by amending soil with U(VI).
1 mar 2024 · We illustrate effects of biochar application on uranium immobilisation in soil. We also review the inner mechanisms for uranium immobilisation by biochar including surface complexation, reduction, ion exchange, and physical adsorption.
18 sie 2011 · The high content of uranium in uncontaminated soils is most frequently inherited from the parent rocks in the regions of positive U anomalies: in the soils developed on oil shales and in the marginal zone of bogs at the reduction barrier.
26 kwi 2019 · Environmental contamination by 238 U occurs in the resting places of rocks with high uranium content in the points, where the ground waters come out on the Earth surface. 238 U enters the atmosphere because of volcanic outbursts, forest fires, meteoric dust and soil transfer by the wind.
