1. Research Focus Area for Chemical Resource Beneficiation,
North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom
2520, South Africa
2. Energy Systems, School of Chemical
and Minerals Engineering,
North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom
2520, South Africa
3. Sasol Technology (Pty) Ltd., Research & Development, Coal & Gas Processing Technology, Box 1, Sasolburg, 1947, South Africa
4. Energy and Mineral Engineering and the
EMS Energy Institute,
Pennsylvania State University, Hosler Building, University Park, Pennsylvania
16802, United States