1. School of Chemical and Environmental Engineering; China University of Mining and Technology (Beijing); Beijing 100083 China
2. Rizhao No.1 Middle School of Shandong; Rizhao 276825 China
3. School of Environment and Energy; South China University of Technology; Guangzhou 510006 China
4. Department of Chemical and Environmental Engineering; Yale University, New Haven; CT 06511 United States
5. Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 China
6. University of Chinese Academy of Sciences; Beijing 100049 China