Potential Release of Zinc and Cadmium From Mine-Affected Soils Under Flooding, a Mesocosm Study.

ABSTRACT: Metal-contaminated mining soils pose serious environmental and health risks if not properly managed, especially in mountainous areas, which are more susceptible to perturbation. Currently, climate change is leading to more frequent and intense rain events, which cause flooding episodes, thereby altering soil redox equilibria and contaminants stability. We evaluated the potential release of Zn and Cd (two of the most common inorganic contaminants) and the factors regulating their solubility and speciation in two heavily contaminated soils representative of a Zn-mining area. The soils were flooded under aerobic (for 24 h) and anaerobic (for 62 days) conditions using mesocosm experiments, sequential extractions, and geochemical modelling. Leaching trials under aerobic conditions showed a high

SUBMITTER: Padoan E 

PROVIDER: S-EPMC7688597 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature