1. School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing, PR China;
2. Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science & Technology Beijing, Beijing, PR China;
3. Lancaster Environment Centre, Lancaster University, Lancaster, UK;
4. Environmental Science and Engineering College, Fujian Normal University, Fuzhou, PR China;
5. School of Environment, Tsinghua University, Beijing, PR China