Tiwary, R.K. (2004) Predicting drainage quality for sustainable exploitation of coal. Journal of Scientific & Industrial Research , 63 (11). pp. 919-926. ISSN 0022-4456

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Abstract

In this paper, a technique has been suggested to know the quality of mine drainage even before the start of mining operation. The coal and associated rock samples are collected from the mine site. The mineralogical composition and geochemical character of each rock types occurring at the site are determined. The geo-chemical properties are measured in terms of R-pH, pollution production potential (PPP) and acid neutralization potential (ANP). The geo-chemical characteristics of various rock types indicate that they have different geo-chemical properties. There is a discrepancy in pH values obtained under laboratory conditions and field data and an explanation is given. On the basis of geo-chemical properties and weathering tests, it is found that except sandstone, all other litho-types such as, coal shale, and shaly coal have the potential to deteriorate water quality and whatever the water pollutants present in the mine water are just because of interaction of these rock units with water. It is predicted that drainage from coal, shale, and shaly coal may be acidic, whereas drainage from sandstone is basic. The more or less same patterns are observed in the field. The technique suggested for the prediction of drainage quality may prove helpful and can identify rock types likely to produce water contaminants during their exposure to atmosphere in amine.

Item Type:	Article
Uncontrolled Keywords:	Drainage quality, Mineralogical composition, Rock-pH, Pollution production potential, Acid neutralization potential, Total sulphur
Subjects:	Envieronmental Management Group
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	09 Dec 2011 04:54
Last Modified:	09 Dec 2011 04:54
URI:	http://cimfr.csircentral.net/id/eprint/299

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