1. Faculty of Environmental Engineering, Geomatics and Renewable Energy Kielce, Kielce University of Technology, 25-314 Kielce, Poland
2. Department of Chemistry, Federal University of Technology-Paraná, Brazil (UTFPR), Avenida João Miguel Caram 3131, Jardim Morumbi, Londrina 86036-370, PR, Brazil
3. Department for Energy and Process Engineering, Faculty of Engineering, University of Kragujevac, 34000 Kragujevac, Serbia
4. Faculty of Mining, Ecology, Process Control and Geotechnologies, Technical University of Kosice, Letna 9, 042 00 Kosice, Slovakia