Research Article
Co-Digestion of Sugar Beet Silage Increases Biogas Yield from Fibrous Substrates
Table 2
Reactors with feedstock ratio and volatile solid contents. C/N ratio of feedstock in mixtures and in digestate during fermentation period.
| | VS ratio | FM (%) | C/N ratio of feedstocks in mixtures | C/N ratio in digestate |
| Experiment one (M : S) | | | | | CFM1 | 1 : 0 | 100/0 | 33.1 | 11.1 ± 0.3 | CFM2 | 6 : 1 | 70/30 | 33.2 | 11.1 ± 0.2 | CFM3 | 3 : 1 | 54/46 | 33.3 | 11.3 ± 0.3 | CFM4 | 1 : 3 | 12/88 | 34.0 | 11.4 ± 0.6 | Experiment two (G : S) | | | | | CFG1 | 1 : 0 | 100/0 | 15.0 | 12.3 ± 0.6 | CFG2 | 6 : 1 | 62/38 | 16.1 | 11.6 ± 0.4 | CFG3 | 3 : 1 | 45/55 | 17.0 | 11.5 ± 0.5 | CFG4 | 1 : 3 | 8/92 | 24.7 | 11.2 ± 0.5 |
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FM: fresh masses; VS: volatile solids.
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