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Monitoring and analysis of selenium as an emerging contaminant in mining industry: A critical review.

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Etteieb, Selma; Magdouli, Sara; Zolfaghari, Mehdi; Brar, Satinder Kaur (2020). Monitoring and analysis of selenium as an emerging contaminant in mining industry: A critical review. Science of The Total Environment , vol. 698 . p. 134339. DOI: 10.1016/j.scitotenv.2019.134339.

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Résumé

Selenium is an indispensable trace element for humans, however, its release at high concentrations becomes a major concern for terrestrial and aquatic ecosystems due to its bioaccumulation potential. Mining and metal-mineral processing are among the main sources of selenium released into the environment. Excessive levels of selenium may induce toxicity in human as selenosis, in grazing animals as alkali disease and in aquatic organisms as larval and developmental deformities and mortality. Due to the introduction of new policies for Se monitoring in the mining industry mainly setting the guidelines for selenium level in freshwaters as recommended by the Canadian Council of Ministers of Environment and Environment and climate change Canada, an improved understanding of Se occurrence, mobility, bioavailability and treatment technologies for efficient removal is timely and required. In this context, this review updated the understanding of mining-related selenium occurrence in surface water, soil and plant, with a focus on its mobility and bioavailability. Selenium uptake, translocation, accumulation, and metabolism in plants are further presented. Selenium monitoring and treatment is the key to adopt the corrective measures to mitigate highly contaminated effluent and to minimize the associated adverse health effects. Future research directions and recommendations for selenium analysis and treatment processes are also discussed.

Type de document: Article
Mots-clés libres: selenium speciation; mining activity; bioavailability; mobility; treatment processes, challenges
Centre: Centre Eau Terre Environnement
Date de dépôt: 04 déc. 2019 15:46
Dernière modification: 04 déc. 2019 15:46
URI: http://espace.inrs.ca/id/eprint/9586

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