1. Department of Water and Sewage Treatment, Technical University of Kielce, Aleja 1000-lecia PP7, 25-314 Kielce, Poland
2. Institute of Chemistry, The Świętokrzyskie Academy, Chęcińska 5, 25-020 Kielce, Poland
3. Department of Chemistry, The Military Academy of Technology, Kaliskiego 2, 00-908 Warsaw, Poland