1. Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
2. School of Chemical Engineering, Universiti Sains Malaysia, Nibong Tebal, Malaysia.
3. Department of Civil Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
4. Department of Chemistry, Evan Enwerem University, Owerri, Nigeria.