1. Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria, South Africa
2. Department of Metallurgical and Materials Engineering, University of Nigeria, Nsukka, Nigeria
3. Africa Centre of Excellence on Sustainable Power and Energy Development, University of Nigeria, Nsukka, Nigeria
4. Department of Electrical Engineering, Tshwane University of Technology, Pretoria, South Africa
5. Center for Energy and Electrical Power, Tshwane University of Technology, Pretoria, South Africa
6. Department of Agricultural and Bioresources Engineering, University of Nigeria, Nsukka, Nigeria