1. School of Chemistry and Chemical Engineering, Guizhou University, Guiyang550025, Guizhou, China
2. School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai200237, China
3. Unit of Environmental Engineering, The Faculty of Engineering Science, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva84105, Israel
4. Research Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, Kobe657-8501, Japan