Abstract
Single and two-phase operations were compared at mesophilic operating conditions using a digester system consisting of three 5-m3 reactors treating food waste generated daily within the university campus kitchens. When normalizing the methane production to the daily feedstock characteristics, significantly greater methane was produced during two-phase mesophilic digestion compared to the single-stage operation (methane yield of 380 vs 446-LCH4kgVS-1; 359 vs 481-LCH4kgCOD-1 removed for single vs two stage operation). The fermentation reactor could be maintained reliably even under very low loading rates (0.79±0.16kgCODm-3d-1) maintaining a steady state pH of 5.2.
| Original language | English |
|---|---|
| Journal | Bioresource Technology |
| Volume | 178 |
| Pages (from-to) | 226-229 |
| Number of pages | 4 |
| ISSN | 0960-8524 |
| DOIs | |
| Publication status | Published - 2015 |
| Externally published | Yes |
Keywords
- Food waste
- Two-stage anaerobic digestion
- Loading
- Methane
- Digester systems
- Methane production
- Operating condition
- Two phase operation
- Two-stage anaerobic digestions
- University campus
- Variable loadings
- Anaerobic digestion
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