Low Cost Treatment of Acid Mine Drainage

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Authors

  • Om Prakash Rajak
     Department of Environmental Science and Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, Jharkhand, ,IN
  • Ashok Kumar Singh
     Department of Environmental Science and Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, Jharkhand, ,IN

Keywords:

AMD, CFA, RHB

Abstract

Gorbi mine belonging to Northern Coalfields Limited (A subsidiary of Coal India Limited) has been abandoned and mine void is filled with water acidic, which is due to presence of pyrite in the coal measure, strata containing sulphur varying from 0.5 to 1.0 per cent. Pyrite (FeS2) is oxidized when exposed to oxygen and water, resulting in hydrogen ions, sulfate ions and metal cations. This problem also persists in coalfields of North East India. The problem of acid mine drainage pollutes the surface and ground water making it unsuitable for plants and animals and need to be neutralize with the removal of trace and major metal before its supply. Acid mine drainage (AMD) is characterized by low pH value 24 and often contains high concentrations of chemical species such as Fe, Mn and anionic species such as SO4, apart from heavy metals such as Zn, Co, Pb, Cr, and Cu in trace concentrations. This paper describes the results of a study conducted to determine the ability of coal fly ash (CFA) and rice husk biochar (RHB), which are available locally and do not cost much to neutralize inorganic trace and major elements from acid mine drainage in different conditions. In this study optimum doses of CFA and RHB have been determined for the neutralization.

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Published

2022-10-20

How to Cite

Rajak, O. P., & Singh, A. K. (2022). Low Cost Treatment of Acid Mine Drainage. Journal of Mines, Metals and Fuels, 67(8), 378–386. Retrieved from https://informaticsjournals.com/index.php/jmmf/article/view/31645

Issue

Volume 67, Issue 8, August 2019

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

 

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