Diversity of thermophilic populations during thermophilic aerobic digestion of potato peel slurry
2008
Ugwuanyi, J.O. | Harvey, L.M. | McNeil, B.
To study the diversity of thermophiles during thermophilic aerobic digestion (TAD) of agro-food waste slurries under conditions similar to full-scale processes. Population diversity and development in TAD were studied by standard microbiological techniques and the processes monitored by standard fermentation procedures. Facultative thermophiles were identified as Bacillus coagulans and B. licheniformis, while obligate thermophiles were identified as B. stearothermophilus. They developed rapidly to peaks of 10⁷ to 10⁸ in Limited range of indigenous thermophiles drives TAD of slurry. They develop rapidly and are stable at most digestion conditions. Development and stability of thermophiles in TAD suggest that the process may be operated in a wide range of conditions; and even at short HRT in continuous processes without compromising efficiency.
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