1. College of Light Industry and Food Engineering, Guangxi University, Daxue Road 100, Nanning 530004, P. R. China
2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, P. R. China
3. School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Daxue Road 158, Nanning 530006, P. R. China
4. Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Nanning 530006, P. R. China
5. Department of Chemical and Paper Engineering, Western Michigan University, Kalamazoo, Michigan 49008-5200, United States
6. School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, P. R. China