1. College of Engineering, China Agricultural University (Key Laboratory for Clean Renewable Energy Utilization Technology, Ministry of Agriculture), No. 17 Qinghua East Road, Haidian District, Beijing 100083, People’s Republic of China
2. Biomass Energy and Environmental Engineering Research Center, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, People’s Republic of China