1. Department of Chemical Engineering, University of Ilorin, Tanke, Ilorin, 234 Nigeria;
2. Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria;
3. Department of Chemical Engineering, Michael Okpara University of Agriculture, Umudike, Nigeria;
4. Department of Chemical Engineering, Obafemi Awolowo University Faculty of Technology, Ile-Ife, Nigeria