1. State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, People's Republic of China.
2. Department of Environmental Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark.
3. Henan Key Laboratory for Environmental Pollution Control, College of Chemistry and Environmental Sciences, Henan Normal University, Xinxiang, Henan, People's Republic of China.