1. Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China
2. Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
3. Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
4. Centre for Water Technology (WATEC) & Department of Engineering, Aarhus University, Hangøvej 2, Aarhus N DK-8200, Denmark
5. Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
6. Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, Ohio 45221, United States
7. Department of Civil and Environmental Engineering, Michigan Technological University, Houghton, Michigan 49931, United States