1. Water
Chemistry Department, Federal Institute of Hydrology (BfG), Am
Mainzer Tor 1, D-56068 Koblenz, Germany
2. Department
of Civil Engineering, University of Akron, Akron, Ohio 44325, United States
3. Department
of Crop Sciences and Safe Global Water Institute and NSF Science and
Technology Center of Advanced Materials for the Purification of Water
with Systems, University of Illinois at Urbana−Champaign, 1101 West Peabody Drive, Urbana, Illinois 61801, United States
4. Department
of Chemistry and Biochemistry, University of South Carolina, 631
Sumter St., Columbia, South
Carolina 29208, United States