Biogeochemical behavior and pollution control of arsenic in mining areas: A review

Front Microbiol. 2023 Mar 23:14:1043024. doi: 10.3389/fmicb.2023.1043024. eCollection 2023.

Abstract

Arsenic (As) is one of the most toxic metalloids that possess many forms. As is constantly migrating from abandoned mining area to the surrounding environment in both oxidation and reducing conditions, threatening human health and ecological safety. The biogeochemical reaction of As included oxidation, reduction, methylation, and demethylation, which is closely associated with microbial metabolisms. The study of the geochemical behavior of arsenic in mining areas and the microbial remediation of arsenic pollution have great potential and are hot spots for the prevention and remediation of arsenic pollution. In this study, we review the distribution and migration of arsenic in the mining area, focus on the geochemical cycle of arsenic under the action of microorganisms, and summarize the factors influencing the biogeochemical cycle of arsenic, and strategies for arsenic pollution in mining areas are also discussed. Finally, the problems of the risk control strategies and the future development direction are prospected.

Keywords: arsenic pollution; bio-geochemical processes; microbial communities; mining area; pollution control.

Publication types

  • Review

Grants and funding

This study was supported by the National Key Research and Development Program by the Ministry of Science and Technology of China (2018YFE0110200) and the Key Research and Development Program of Hunan Province (Nos. 2020WK2022 and 2022SK2076).