1. Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139-4307, United States
2. Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139-4307, United States
3. Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, P.O. Box 123, 15 Broadway, Ultimo, NSW 2007, Australia
4. Department of Materials Engineering, University of British Columbia, 309-6350 Stores Road, Vancouver, British Columbia V6T 1Z4, Canada
5. Institute on Membrane Technology (ITM−CNR), c/o University of Calabria, 87036 Rende, Italy