| Title |
Dry Anaerobic Digestion of Food Industry by-Products and Bioenergy Recovery: A Perspective to Promote the Circular Economy Transition |
| ID_Doc |
5808 |
| Authors |
Sganzerla, WG; Tena-Villares, M; Buller, LS; Mussatto, SI; Forster-Carneiro, T |
| Title |
Dry Anaerobic Digestion of Food Industry by-Products and Bioenergy Recovery: A Perspective to Promote the Circular Economy Transition |
| Year |
2022 |
| Published |
Waste And Biomass Valorization, 13, 5 |
| DOI |
10.1007/s12649-022-01682-4 |
| Abstract |
Anaerobic digestion (AD) can be a suitable alternative for agro-industrial by-products energy recovery, contributing to reducing environmental side effects caused by incorrect disposal of these materials. In this study, dry AD reactors were started-up with acai seeds, brewer's spent grains (BSG), and poultry feathers, all solid by-products generated from the food industry. The results demonstrated that during 22 days of dry AD, the BSG reactor presented the best operational performance, as follows: (i) highest solids biodegradation (up to 70%); (ii) accumulated biogas volume (up to 10 L); (iii) methane composition (57.49%); and (iv) methane yield (39.51 L -CH(4)kg(-1) total volatile solids). The biogas combustion in a combined heat and power engine could locally generate electric (0.101 MWh -ton(-1) BSG) and thermal energy (455.21 MJ -ton(-1) BSG), which could be used to self-supply the industrial facility, avoiding greenhouse gas emissions (0.03 ton -CO2eq -ton(-1) BSG) from the traditional energy sources. Based on the experimental dataset, the dry AD of agro-industrial by-products can be a promising approach to produce methane-rich biogas, being mainly of interest for the beer industry, as an alternative for energy recovery in a circular economy concept. |
| Author Keywords |
Food waste; Food supply chain waste; Bioenergy; Biofuel; Methane; Biorefinery |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000741878200001 |
| WoS Category |
Environmental Sciences |
| Research Area |
Environmental Sciences & Ecology |
| PDF |
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