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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44067

Biocalcification For Stabilisation Of Iron Mine Tailings

S H Vamsi Krishna, B H S Sai Prasanth, R Sai Chandu


Mine tailings consist of fine-grained particles that are deposited into large impoundments. Seasonal temperature and moisture fluctuations can result in dust emissions, an environmental hazard. Accordingly, there is a need for efficient and economical means for controlling dust emissions. Biogeotechnics provides one innovative approach to modifying soil properties. The application of this process to fine-grained materials, however, poses unique challenges. The goal of this work was to demonstrate biocalcification in fine-grained mine tailings to promote the formation of a crust that increased the surface strength of the tailings. Soil box experiments coupled with multiple lines of evidence collected using novel analytical techniques were used to confirm (a) the successful formation of the surface crust by way of ureolysis.


Iron, Mine, Tailings.

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