Prediction of acid mine drainage potential of dump sites by using static tests: an application on lignite mine
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ORIGINAL PAPER
Prediction of acid mine drainage potential of dump sites by using static tests: an application on lignite mine Cengiz Karagüzel 1 & Özer Ören 1 & Müge Şahbaz 1 & Ömer Canıeren 1 & Uğur Demir 1 & Oktay Şahbaz 1 Received: 5 May 2020 / Accepted: 1 November 2020 / Published online: 13 November 2020 # Saudi Society for Geosciences 2020
Abstract Oxidation of sulphur-containing rocks of the waste of open pit mine activities is one comment and important process. This mineralization process plays essential role in development of acid mine drainage (AMD). It is well known that this waste and its transforming development and movement presents a real threat not only for soil structure and nearby environmental, but also increases the risks of groundwater contamination and will affect public health. In this study and unlike traditional methods, AMD formation of the private enterprise dump site located in the Tunçbilek region of Kütahya was determined by taking into account different sampling depth and point-by-point basis. For this purpose, the geological structure of the site was examined and the characterization of the minerals in the waste was revealed. In addition, sulphur analysis of the samples and static tests were carried out to determine the acid generation potential (AGP) and neutralization potential (NP) of the site. The archived results showed that the AGP of the studied dump site was determined as 12 kg CaCO3 t−1 while NP was determined as 240 kg CaCO3 t−1. In addition, the NP/AGP ratio was calculated as greater than 3. According to these results, it can be concluded that AMD will not occur in these sites in the short or medium term. Keywords Acid mine drainage . Environmental impact . Lignite . Mining wastes . Neutralization potential
Introduction In the developing modern world, especially as a result of mining, agriculture, and industrial sector activities, there are losses in the quality of clean groundwater, biodiversity and ecological functions (Bell et al. 2001; Yenilmez et al. 2011; Steyn et al. 2019). Excessive quantities of waste will be generated through mining activities which have an important role in the energy market. Mining wastes are quite heterogeneous compared with other sectors due to their quantity, mineralogical formation and their properties. It varies depending on the mineral preparation and enrichment process applied. Waste in mines is usually stored in dump site and slurry ponds, while it is stored in some mineral sites as the form of post-leaching ore piles. These disposal sites present high potential risk for Responsible Editor: Amjad Kallel * Cengiz Karagüzel [email protected] 1
Department of Mining Engineering, Kütahya Dumlupınar University, 43270 Kutahya, Turkey
the surrounding environmental and can create factual health and ecological short- or long-term problems. One of the most serious environmental problems that can occur in these mines is acidic mine drainage (AMD) which will be formed by the effect of iron sulphide in coal mines or by the effect of su
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