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. Centre for Water Technology (WATEC) & Department of Biological and Chemical Engineering, Aarhus University, Universitetsbyen, 8000 Aarhus C, Denmark
4. Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, USA
5. Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, Ohio, 45221, USA