1. Bioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, China
2. Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture and Rural Affairs, Beijing, China
3. National Center for International Research of BioEnergy Science and Technology, Ministry of Science and Technology, Beijing, China
4. School of Material Science and Mechanical Engineering, Beijing Technology and Business University, Beijing, China
5. Department of Environmental Health, Tshwane University of Technology, Pretoria, South Africa
6. Department of Agricultural Engineering, Faculty of Agriculture, Omdurman Islamic University, Khartoum State, Sudan
7. Yantai Institute, China Agricultural University, Yantai, Shandong Province, China