1. Bahir Dar Energy Center, Bahir Dar Technology Institute, Bahir Dar University, Bahir Dar, Ethiopia
2. Ethiopian Institute of Textile and Fashion Technology, Bahir Dar University, Bahir Dar, Ethiopia
3. Department of Material Science and Engineering, College of Science, Bahir Dar University, Bahir Dar, Ethiopia
4. Department of Chemistry, College of Science, Bahir Dar University, Bahir Dar, Ethiopia