1. University of Kentucky Center for Applied Energy Research, 2540 Research Park Dr., Lexington, KY 40511, USA, https://orcid.org/0000-0002-4504-3501 (T.R.)
2. Hacettepe University Mining Engineering Department, Mineral Processing Division 06800-Beytepe, Ankara/TURKEY
3. University of Kentucky Center for Applied Energy Research, 2540 Research Park Dr., Lexington, KY 40511, USA (Corresponding author), e-mail: anne.oberlink@uky.edu, https://orcid.org/0000-0002-1661-773X