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Author (up) Zuniga-Barra, H.; Toledo-Alarcon, J.; Torres-Aravena, A.; Jorquera, L.; Rivas, M.; Gutierrez, L.; Jeison, D.
Title Improving the sustainable management of mining tailings through microbially induced calcite precipitation: A review Type
Year 2022 Publication Minerals Engineering Abbreviated Journal Miner. Eng.
Volume 189 Issue Pages 107855
Keywords Microbially induced calcite precipitation(MICP); Tailings; Mining industry; Calcite; Precipitation; Environment
Abstract Mining activities offers evident potential economic benefits for mineral rich countries. However, mining operations can produce a series of environmental impacts. Many of them are associated with the generation and management of tailings. Biogeochemical processes have potential to modify the properties of particulate solids, such as tailings. Microbial induced calcite precipitation (MICP) is probably the most studied biogeochemical process. It promotes calcite precipitation, as a result of biological activity of different microorganisms. Available research indicates that MICP is a tool that has the potential to contribute to a more sustainable management of tailing deposits. Indeed, MICP have been reported as a technology suitable for removal and/or immobilization of heavy metals, creation of impermeable barriers, prevention of soil liquefaction and control of windblown dust emissions. However, several challenges still need to be addressed to enable relible full-scale implementation, requiring research in the near future. These are consideration of the particular chemical composition of tailings, reduction of urea requirements, determination of optimal reagents dosage, evaluation of the long term stability of the treatment and calculation of costs associated to ecah particular application.
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Series Volume Series Issue Edition
ISSN 0892-6875 ISBN Medium
Area Expedition Conference
Notes WOS:000903969400003 Approved
Call Number UAI @ alexi.delcanto @ Serial 1714
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