DOI: 10.5593/SGEM2014/B52/S20.036


L. Kozakova, M. Zelenak, F. Zelenak
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-18-6 / ISSN 1314-2704, June 19-25, 2014, Book 5, Vol. 2, 267-272 pp

Environmental loads are areas contaminated with various industrial activities. Heaps and sludge beds are remnants of mining and mineral processing activities and there are serious problems as far as conditions in Slovakia are concerned. Sludge bed Slovinky (Eastern Slovakia) belongs to the group of high-risk areas, threatening human health and the environmental components due to unfavorable structural condition and it is included in regular monitoring. Flotation waste from mineral processing of sulphide ores and industrial slag from metallurgical processing in fine-grained form were deposited in this sludge bed. The aim of our research was focused on the study of selected characteristics, especially on pH, neutralization potential, determination of cations and anions (results of the determination of heavy metals concentration have been published in previous work). Selected indicators were determined in an aqueous extract, concentration of calcium and magnesium in HCl extract, pH in both extracts. Assessment of neutralization potential was performed as a static extraction test using US EPA method. The experimental results showed that the sludge bed has alkaline character, the reached pH values were above 8.5. Content of sulphides is low, created acidity was neutralized by presence of carbonates, and therefore there is no possibility of active acidity production.

Keywords: environmental load, sludge bed, neutralization potential, extracts