1. Department of Applied Chemistry, School of Applied and Natural Sciences, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia
2. Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
3. Sustainable Energy Center of Excellence, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia