Biomethane Production from Cheese Whey in a Two-Phase Anaerobic Digestion System: Integration of Sewage Sludge Treatment and Dairy By-Products Recovery

C. Salomoni, A. Caputo, M. Bonoli, O. Francioso, M.T. Rodriguez-Estrada & D. Palenzona
Efficient anaerobic digestion does not only represent a suitable solution for sludge disposal, but also provides additional energy gain from biogas use in cogeneration. Co-digestion of sewage sludge with additional compounds can be beneficial for the whole process because of the synergic interactions between substrates. Furthermore, the integration of different types of local resources often results in significant cost savings, e.g. transport costs. Following an agreement between two major Italian companies, Hera Spa (a leading...