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.