Thermophilic anaerobic digestion of livestock waste: the effect of ammonia

@article{Angelidaki2004ThermophilicAD,
  title={Thermophilic anaerobic digestion of livestock waste: the effect of ammonia},
  author={Irini Angelidaki and Birgitte Ki{\ae} Ahring},
  journal={Applied Microbiology and Biotechnology},
  year={2004},
  volume={38},
  pages={560-564}
}
Ammonia concentrations of 4 g N/l or more inhibited thermophilic digestion of cattle manure. A stable digestion of cattle manure could be maintained with ammonia concentrations up to 6 g N/l after 6 months of operation. However, the methane yield was reduced and the concentration of volatile fatty acids increased from 1 to 3 g/l as acetate, compared to controls with an ammonia concentration of 2.5 g N/l. The temporary strong inhibition following an one-step increase in ammonia concentration was… CONTINUE READING
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