[1] Univ Catania, Dipartimento Ingn Elettr Elettron & Informat, I-95125 Catania, Italy
[2] Univ Catania, Dipartimento Econ & Impresa, I-95129 Catania, Italy
[3] Italian Natl Agcy New Technol Energy & Sustainabl, Dept Sustainabil, Resource Valorizat Lab, ENEA Casaccia Res Ctr, I-00123 Rome, Italy