1. School of Resources, Environment and Materials
2. Guangxi University
3. Nanning 530004
4. P. R. China
5. School of Chemical Engineering and Technology
6. Hainan University
7. Haikou 570228
8. School of Chemical and Environmental Engineering
9. Shaoguan University
10. Shaoguan 512005
11. College of Civil Engineering and Architecture
12. Guangzhou Institution Energy Testing
13. Guangzhou 510170