1. Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama, Ethiopia
2. Department of Chemistry, College of Natural and Computational Sciences, Hawassa University, Hawassa, P.O. Box 05, Ethiopia
3. Department of Industrial Chemistry, College of Applied Science, Addis Ababa Science and Technology University, P.O. Box 16417, Addis Ababa, Ethiopia