1. Eawag, Swiss Federal Institute of Aquatic Science and Technology, CH-8600 Dübendorf, Switzerland
2. Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, CH-8092 Zürich, Switzerland
3. Department of Chemical Engineering and Water Innovation & Research Centre (WIRC), University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
4. INFRAS Research and Consulting, CH-3012 Berne, Switzerland