1. Faculty of Chemical and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, PR China;
2. College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi’an, China;
3. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, PR China