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. Department of Civil and Environmental Engineering, Michigan Technological University, Houghton, Michigan 49931, United States
4. Department of Civil Engineering, Auburn University, Auburn, Alabama 36849, United States
5. Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
6. Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, Ohio 45221, United States