1. School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
2. Department of Environmental Sciences, The Connecticut Agricultural Experiment Station, 123 Huntington Street, New Haven, Connecticut 06511, United States
3. Department of Environmental Science, Zhejiang University, Hangzhou 310058, P. R. China
4. Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangdong, Guangzhou 510006, P. R. China
5. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510006, P. R. China