1. School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
2. Key Lab of Pollution Control & Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, Guangdong, China
3. Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou 510006, Guangdong, China
4. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798