1. Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
2. ETH Zürich, Institute of Environmental Engineering, 8093 Zürich, Switzerland
3. EMPA, Swiss Federal Laboratories for Materials Science and Technology, 9014 St. Gallen, Switzerland
4. ETH Zürich, Institute of Energy Technology, 8092 Zürich, Switzerland