1. Environmental Engineering Research Laboratory, Department of Chemical Engineering, Obafemi Awolowo University, Ile–Ife, Nigeria
2. Environmental Engineering Research Laboratory, Department of Chemical Engineering, University of Ilorin, Ilorin, Nigeria
3. Department of Chemical Engineering, Landmark University, Omu-Aran, Nigeria
4. Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria