1. Department of Chemical Engineering, Thermodynamics Research Group, Durban University of Technology, Steve Biko Campus, Durban 4001, South Africa
2. Department of Chemical Engineering, Thermodynamics, Materials and Separations Research Group (TMSRG), Mangosuth University of Technology, Mangosuthu Highway, Durban 4001, South Africa
3. Department of Chemical Engineering, Cape Peninsula University of Technology, Bellville Campus, Bellville 7535, South Africa