1. School of Chemical Engineering
2. Sichuan University
3. Chengdu 610065
4. P R China
5. Engineering Research Center of Comprehensive Utilization and Clean Processing of Phosphorus Resources
6. Suntime Environmental Remediation Co., Ltd
7. Changzhou 213000
8. College of Chemistry and Chemical Engineering
9. Yibin University
10. Yibin 64000