1. Xiamen Key Laboratory of Clean and High-Valued Utilization for Biomass, College of Energy, Xiamen University, Xiamen 361102, P. R. China
2. Fujian Engineering and Research Centre of Clean and High-Valued Technologies for Biomass, Xiamen 361102, P. R. China
3. Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Hubei Normal University, Huangshi 435002, P. R. China
4. Beijing Forestry University, Inst Biomass Chem & Technol, Beijing 100083, P. R. China