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- Title
Prediction of acid mine drainage generation potential in selected mines in the Ashanti Metallogenic Belt using static geochemical methods.
- Authors
Akabzaa, T.; Armah, T.; Baneong-Yakubo, B.
- Abstract
Acid mine/rock drainage (AMD/ARD) is the biggest environmental threat facing the mining industry. This study investigates AMD/ARD possibilities in three mines in the Ashanti Belt, using acid base accounting (ABA) and net acid generation pH (NAGpH) tests. Twenty-eight samples of rock units and mine spoil from these mines were collected for ABA and NAGpH tests. Two tailing dumps at Prestea and Nsuta were confirmed by both methods as acid generating with NAGpH of 4.5 and 4.6 and neutralization potential ratio values of 4.38 and 4.60, respectively. Six other samples are classified as potentially acid generating using a variety of established classification criteria. The rest of the samples either exhibited very low sulphur and carbonate content or had excess carbonate over sulphur. Consistency between results from ABA and NAGpH tests validates these tests as adequate tools for preliminary evaluation of AMD/ARD possibilities in any mining project in the Ashanti Belt.
- Subjects
GHANA; ACID mine drainage; FORECASTING; GEOCHEMISTRY; CARBONATE rocks; SULFUR; HYDROGEN-ion concentration; MINES &; mineral resources &; the environment; METALLOGENIC provinces
- Publication
Environmental Geology, 2007, Vol 52, Issue 5, p957
- ISSN
0943-0105
- Publication type
Article
- DOI
10.1007/s00254-006-0537-1