1 Trade-offs between nutrient circularity and 2 environmental impacts in the management of 3 organic waste 4 5 6 Selene Cobo*, Antonio Dominguez-Ramos and Angel Irabien 7 8 Department of Chemical and Biomolecular Engineering, University of Cantabria 9 Avda. los Castros s.n., Santander, 39005, Spain 10 *Corresponding author: Selene Cobo 11 Tel.: +34 942 20 09 31. E-mail: cobos@unican.es 12 13 14 15 16 17 18 19 20 21 22