| Title |
Process intensification for the recovery of methane-rich biogas from dry anaerobic digestion of acai seeds |
| ID_Doc |
25248 |
| Authors |
Sganzerla, WG; Ampese, LC; Parisoto, TAC; Forster-Carneiro, T |
| Title |
Process intensification for the recovery of methane-rich biogas from dry anaerobic digestion of acai seeds |
| Year |
2023 |
| Published |
Biomass Conversion And Biorefinery, 13, 9 |
| DOI |
10.1007/s13399-021-01698-1 |
| Abstract |
Anaerobic digestion (AD) can be a suitable alternative for industrial waste treatment and energy recovery. In this study, the AD of acai seeds was evaluated under mesophilic temperature and dry regime. The stirred-tank reactor, composed of acai seeds (25%), inoculum (45%), and water (30%), was started up and operated in batch mode for 40 days. The results demonstrate that the total solids' biodegradation reached 59.38%, and the accumulated biogas produced was higher than 6 L. A stable methane content was obtained after 22 days of digestion, with a composition of around 60%. The experimental methane yield (156.65 mL-CH4-g(-1) TS) was higher than the theoretical methane yield (116.36 mL-CH4-g(-1) TS), demonstrating that the dry AD process was favorable to methane production. From the biogas combustion in a heat and power unit, 21.88 kWh of electricity and 98.48 MJ of heat could be produced from 1 ton of acai seeds submitted to dry AD, mitigating a total of 7.15 x 10(-3)-tCO(2eq). From the proposed industrial process intensification, the adoption of dry AD could supply 43.19% of the energy required by the acai processing industry. Hence, the AD can be a technological route for bioenergy recovery, contributing for reducing the acai industry's carbon footprint while promoting environmental, social, and economic benefits for the local sustainable development. |
| Author Keywords |
Methane; Biogas; Greenhouse gas mitigation; Energy balance; Biorefinery; Circular economy |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000670174300001 |
| WoS Category |
Energy & Fuels; Engineering, Chemical |
| Research Area |
Energy & Fuels; Engineering |
| PDF |
|