1. Regional Water and Environmental Sanitation Centre, Kumasi. Department of Civil Engineering, College of Engineering Kwame Nkrumah University of Science and Technology UPO Kumasi Ghana
2. Council for Scientific and Industrial Research Institute of Industrial Research Kumasi Ghana
3. Department of Chemical Engineering College of Engineering Kwame Nkrumah University of Science and Technology PMB, UPO Kumasi Ghana
4. Department of Theoretical and Applied Biology College of Science Kwame Nkrumah University of Science and Technology PMB, UPO Kumasi Ghana