E Massi
Sapienza University of Rome
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Waste Management | 2014
Giovanna Salvatorica Cappai; G. De Gioannis; Marco Friargiu; E Massi; Alessandra Muntoni; Alessandra Polettini; Raffaella Pomi; Daniela Spiga
Batch dark fermentation experiments were performed on food waste and mixtures of food waste and wastewater activated sludge to evaluate the influence of pH on biological H2 production and compare the process performance with and without inoculum addition. The effect of a preliminary thermal shock treatment of the inoculum was also investigated as a means to harvest the hydrogenogenic biomass. The best performance in terms of both H2 generation potential and process kinetics was observed at pH=6.5 under all experimental conditions (no inoculum, and untreated or thermally treated inoculum added). H2 production from food waste was found to be feasible even without inoculum addition, although thermal pre-treatment of the inoculum notably increased the maximum production and reduced the lag phase duration. The analysis of the fermentation products indicated that the biological hydrogen production could be mainly ascribed to a mixed acetate/butyrate-type fermentation. However, the presence of additional metabolites in the digestate, including propionate and ethanol, also indicated that other metabolic pathways were active during the process, reducing substrate conversion into hydrogen. The plateau in H2 generation was found to mirror the condition at which soluble carbohydrates were depleted. Beyond this condition, homoacetogenesis probably started to play a role in the degradation process.
International Journal of Hydrogen Energy | 2014
G. De Gioannis; Marco Friargiu; E Massi; A. Muntoni; Alessandra Polettini; Raffaella Pomi; Daniela Spiga
Venice 2014 Fifth International Symposium on Energy from Biomass and Waste | 2014
G De Gioannis; Marco Friargiu; E Massi; A. Muntoni; Alessandra Polettini; Raffaella Pomi; Daniela Spiga
EURASIA 2014 Waste Management Symposium | 2014
Giovanna Salvatorica Cappai; Giorgia De Gioannis; Marco Friargiu; E Massi; Aldo Muntoni; Alessandra Polettini; Raffaella Pomi; Daniela Spiga
Sardinia 2013 XIV International Waste Management and Landfill Symposium | 2013
Giovanna Salvatorica Cappai; G. De Gioannis; Marco Friargiu; E Massi; Aldo Muntoni; Alessandra Polettini; Raffaella Pomi; Daniela Spiga
Sardinia 2013 XIV International Waste Management and Landfill Symposium | 2013
Giorgia De Gioannis; Marco Friargiu; E Massi; Aldo Muntoni; Alessandra Polettini; Raffaella Pomi; Daniela Spiga
First German-Italian Dialog 2012 | 2013
G. De Gioannis; Marco Friargiu; G Giordano; E Massi; Aldo Muntoni; Alessandra Polettini; Raffaella Pomi
Venice 2012 Fourth International Symposium on Energy from Biomass and Waste | 2012
G. De Gioannis; Marco Friargiu; E Massi; A. Muntoni; Alessandra Polettini; Raffaella Pomi
Venice 2012 Fourth International Symposium on Energy from Biomass and Waste | 2012
Giorgia De Gioannis; Marco Friargiu; E Massi; Aldo Muntoni; Alessandra Polettini; Raffaella Pomi
SIDISA 2012 - Sustainable Technology for Environmental Protection” | 2012
Giovanna Salvatorica Cappai; G. De Gioannis; G Giordano; E Massi; A. Muntoni; Alessandra Polettini; Raffaella Pomi