1. School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong 510006, P. R. China
2. The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, Guangdong 510006, P. R. China
3. Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, P. R. China
4. School of Materials, Sun Yat-sen University, Guangzhou 510275, P.R. China
5. Dongjiang Environmental Company Limited, Shenzhen, Guangdong 518057, P.R. China