Risk assessment and strontium isotopic tracing of potentially toxic metals in creek sediments around a uranium mine, China

Deng, Pengyuan; Lin, Ke; Yuan, Wenhuan; Gomez, Mario Alberto; She, Jingye; Yu, Shan; Sun, Mengqing; Liu, Yanyi; Wang, Jin; Chen, Diyun; Liu, Juan

doi:10.1016/j.chemosphere.2024.141597

Chemosphere

2024

DOI: 10.1016/j.chemosphere.2024.141597

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Risk assessment and strontium isotopic tracing of potentially toxic metals in creek sediments around a uranium mine, China

Pengyuan Deng,

Ke Lin,

Wenhuan Yuan

et al.

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2024

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Cited by 2 publications

References 141 publications

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Enhanced passivation of thallium, vanadium and arsenic in contaminated soils: critical role of Fe–Mn-biochar

Deng,

Yuan,

Wang

et al. 2024

Biochar

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Thallium (Tl), vanadium (V) and arsenic (As) are considered as typical toxic elements of increased interest. Their accumulation in soils can pose a substantial health threat to human beings. In this study, Fe–Mn modified biochar (FMBC) was chemically constructed to immobilize Tl, V and As in contaminated soils. The results showed that compared with pristine biochar (BC), FMBC can achieve significantly higher passivation effects for the studied contaminated soils, which reduced the bioavailable Tl, V and As contents by 83.9%, 71.09% and 71.92%, respectively. The passivation of Tl, As, and V via FMBC application was partially attributed to a notable increase in pH, which enhances the availability of adsorptive sites. Further, the newly formed minerals, including cancrinite, gibbsite and Fe–Mn (hydr)oxides, serve as additional adsorbents, substantially reducing the mobility of Tl, V and As. Additionally, the oxidation of Tl(I) to Tl(III) by the Fe–Mn (hydr)oxide of FMBC significantly enhanced Tl immobilization, consequently diminishing its bioavailability. The findings suggest that significant environmental threats could be alleviated through the potential application of FMBC in treating Tl-As-V dominated contamination in soils, providing a new perspective for the sustainable utilization of industrially polluted soils. Graphical Abstract

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Enhanced passivation of thallium, vanadium and arsenic in contaminated soils: critical role of Fe–Mn-biochar

Deng,

Yuan,

Wang

et al. 2024

Biochar

View full text Add to dashboard Cite

show abstract

Exploring multi-media geochemical relationships in the southeastern Amazonian basin: A way forward to define source and background levels of potentially toxic elements in lake sediments

Sahoo,

Guimarães,

Tyski

et al. 2024

Environmental Research

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Risk assessment and strontium isotopic tracing of potentially toxic metals in creek sediments around a uranium mine, China

Cited by 2 publications

References 141 publications

Enhanced passivation of thallium, vanadium and arsenic in contaminated soils: critical role of Fe–Mn-biochar

Enhanced passivation of thallium, vanadium and arsenic in contaminated soils: critical role of Fe–Mn-biochar

Exploring multi-media geochemical relationships in the southeastern Amazonian basin: A way forward to define source and background levels of potentially toxic elements in lake sediments

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