1. Key Laboratory of Resource Clean Conversion in Ethnic Regions, Joint Research Centre for International Cross-Border Ethnic Regions Biomass Clean Utilization in Yunnan, Education Department of Yunnan, Yunnan Minzu University, Kunming, Yunnan, P. R. China
2. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua, P. R. China
3. Department of Chemical Engineering, The Petroleum Institute, Khalifa University of Science and Technology, Abu Dhabi, UAE
4. Center for Biorefining, Bioproducts and Biosystems Engineering Department, University of Minnesota, Saint Paul, MN, USA