Affiliation:
1. University of Mining and Geology "St. Ivan Rilski”, Sofia
Abstract
The formation of acid mine drainage (AMD) is a serious environmental problem in areas with mining and processing industries worldwide. Their generation is associated with chemical and biological processes of oxidation of sulfide minerals, mainly pyrite. Sources of AMD can be deposits of sulfide minerals and coal with a high content of pyrite sulfur, mining waste and some tailings. The impact of AMD on surface and groundwater in mining areas continues for decades after the cessation of extraction. An example of the negative impact of generated acid mine drainage on the state of surface waters is in the region of Madzharovo. Years after the cessation of mining, the waters at the discharge points "Momina Skala", "Harman Kaya" and "Pandak Dere" are characterized by low pH values and high concentrations of iron, copper, zinc, cadmium, lead and manganese.
Publisher
Geological Institute, Bulgarian Academy of Sciences
Reference30 articles.
1. Acharya, B. S., G. Kharel. 2020. Acid mine drainage from coal mining in the United States – An overview. J. Hydrol. 588:125061, https://doi.org/10.1016/j.jhydrol.2020.125061.
2. Benderev, A., I. Dimitrov, B. Mihailova, V. Hristov, I. Ilieva. 2016. Hydrogeological risk assessment in the Elatsite copper mine, Central Bulgaria. Geologica Balcanica. 45, 65–76.
3. Bernardez, L. A., L. E. L. de Oliveira, L. R. P. de Andrade Lima. 2021. Acid mine drainage at the Bahia Gold Belt (Brazil): microbial isolation and characterization. Environ. Monit. Assess., 193, 60, https://doi.org/10.1007/s10661-021-08844-2.
4. Banfield, J.F., K.H. Nealson. 1997. Geomicrobiology: Interactions between Microbes and Minerals. Mineralogical Society of America, Washington, https://doi.org/10.1515/9781501509247.
5. Borden, R. 2001. Geochemical evolution of sulfide-bearing wast e rock soils at the Bingham Canyon Mine, Utah. Geochemistry: Exploration, Environment, and Analysis, 1, 1, 15–21, https://doi.org/10.1144/geochem.1.1.15.