| Title |
Two-phase anaerobic digestion for enhanced valorisation of whiskey distillery by-products |
| ID_Doc |
25112 |
| Authors |
Hackula, A; Shinde, R; Hickey, D; O'Shea, R; Murphy, JD; Wall, DM |
| Title |
Two-phase anaerobic digestion for enhanced valorisation of whiskey distillery by-products |
| Year |
2023 |
| Published |
|
| DOI |
10.1016/j.biortech.2023.129239 |
| Abstract |
The valorisation of whiskey by-products was assessed and compared in three anaerobic digestion systems. The systems produced similar methane yields, which could satisfy up to 44% of the thermal energy demand at a distillery. Using methane generated from by-products would displace natural gas and reduce the distillery's carbon footprint. Two-phase systems had higher methane content (ca. 75 %vol) than the traditional system (54 % vol) and furthermore, unlocked opportunities for volatile fatty acid production. The potential value that could be generated from the extraction of butyric acid and caproic acid was approximately euro6.76 million for a 50 million litre alcohol facility (0.14 euro per litre of whiskey). All three anaerobic digestion systems showed the potential to valorise whiskey by-products and convert current linear distillery production processes into circular repurpose and reuse production processes. |
| Author Keywords |
Waste utilisation; Volatile fatty acid production; Biogas; Circular economy; Fermentation |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001012457100001 |
| WoS Category |
Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels |
| Research Area |
Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels |
| PDF |
https://doi.org/10.1016/j.biortech.2023.129239
|