1. School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe 85287-3005, Arizona, United States
2. Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Rice University, Houston 77005, Texas, United States
3. Department of Civil Engineering, University of Texas at El Paso, El Paso 79968, Texas, United States
4. Department of Civil and Environmental Engineering, Rice University, Houston 77005, Texas, United States