NEUTRALIZATION OF ACIDIC MINE WATER USING FLYASH AND OVERBURDEN

Abstract

Acid mine water bodies are one of the severe environmental problems in many mines including coal mines all over the world. This problem is also found in a few coal and metal mines of India. In coal mines, the main cause of acidity is the occurrence of pyrite and other sulfide metals in the form of a vein, granular and crystallized form in coal and shale. In this paper, a case study of the utilization of Flyashand overburden for neutralization of acidic water of coal mine has been discussed. Theoretical and acid neutralization potentials of Flyashand O/B were determined. The acid neutralization potential of Flyashand O/B for acid water treatment has been tested in the laboratory by using Flyashand waste rock materials and acidic water of field. The results are encouraging and Flyashmay prove as a good acid neutralizer with coal overburden material.