Combined Heat and Power generation exploiting the biogas production from urban wastewaters treatment: the Genoa case studyDavide Borelli, Francesco Devia, Corrado Schenone, Federico Silenzi and Luca TagliaficoE3S Web Conf., 312 (2021) 08002DOI: https://doi.org/10.1051/e3sconf/202131208002