1. School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
2. Faculty of Frontier Engineering, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
3. Shanghai Academy of Environmental Sciences, Shanghai 200233, China
4. Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau 999078, China