Mechanistic insights and environmental ramifications of Cr(III) oxidation to Cr(VI) in soil and groundwater systems: bridging geochemical mechanisms and emerging remediation strategies
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F25%3A10258862" target="_blank" >RIV/61989100:27350/25:10258862 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s10653-025-02901-2" target="_blank" >https://link.springer.com/article/10.1007/s10653-025-02901-2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10653-025-02901-2" target="_blank" >10.1007/s10653-025-02901-2</a>
Alternative languages
Result language
angličtina
Original language name
Mechanistic insights and environmental ramifications of Cr(III) oxidation to Cr(VI) in soil and groundwater systems: bridging geochemical mechanisms and emerging remediation strategies
Original language description
The oxidation of trivalent chromium [Cr(III)] to hexavalent chromium [Cr(VI)] is a significant environmental process that threatens soil and groundwater quality and poses serious ecological and human health risks. This review provides a critical synthesis of current knowledge about the abiotic, biotic, and thermally induced mechanisms that drive Cr(III) oxidation, including reactions with Mn(IV) oxides, hydrogen peroxide, photochemically generated oxidants, and wildfire-related thermal transformations. Environmental factors such as pH, redox potential, mineralogy, and organic matter content are revealed to play a key role in regulating Cr redox dynamics. Cr(VI) is highly soluble, mobile, and bioavailable, exerting toxic effects on microbial communities, plant growth, and human health even at trace levels. Key attenuation pathways, including chemical and microbial reduction, biosorption, and co-precipitation with Fe-bearing minerals, are critically discussed, with particular attention to re-oxidation, which undermines long-term remediation. This review further evaluates emerging remediation strategies, such as redox manipulation, biochar-assisted immobilization, and coupled plant–microbe systems, emphasizing the need for site-specific, adaptive approaches that account for spatial and temporal environmental variability. Future research should focus on Cr(VI) generation under post-fire scenarios, isotopic tracing, and field-scale testing of sustainable immobilization materials to improve predictive models and ensure long-term mitigation of Cr(VI) contamination in soil-groundwater systems.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10500 - Earth and related environmental sciences
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
ISSN
0269-4042
e-ISSN
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Volume of the periodical
48
Issue of the periodical within the volume
12
Country of publishing house
GB - UNITED KINGDOM
Number of pages
22
Pages from-to
1-22
UT code for WoS article
001621633700003
EID of the result in the Scopus database
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