1. College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430074, PR China
2. State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, PR China
3. School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
4. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States