1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
2. Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
3. Department of Chemical Engineering and Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, NB E3B 5A3, Canada