Microbial community structure and dynamics of a single and a two-stage anaerobic digestion processes treating swine slurry and market bio-wastes
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Data di Pubblicazione:
2012
Citazione:
Microbial community structure and dynamics of a single and a two-stage anaerobic digestion processes treating swine slurry and market bio-wastes / G. Merlino, A. Rizzi, A. Tenca, A. Schievano, R. Oberti, F. Adani, D. Daffonchio. ((Intervento presentato al convegno Cortona Procarioti 2012 tenutosi a Cortona nel 2012.
Abstract:
The dynamics of bacterial and archaeal communities, associated with process performance data, were investigated in a two-stage anaerobic digestion process treating swine slurry and market bio-waste and operating for
60 days under thermophilic conditions. Qualitative and quantitative responses of microbial community were monitored before and after a 15-days starvation period by Denaturing Gradient Gel Electrophoresis (DGGE) and
real-time PCR techniques, respectively. The DGGE 16S rRNA gene analysis showed after the starvation period a significant shift of microbial community in the acidogenic reactor compared to a substantial stability of the
archaeal community in the methanogenic reactor. The quantitative real-time analyses targeting the main phylogenetic and trophic microbial groups showed only limited changes in the number of bacterial and archaeal cells
before and after the starvation period in both the acidogenic and methanogenic processes. Taken together, microbial results showed good agreement with process data indicating a good performance of the anaerobic
digestion process to the stress induced by starvation.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Keywords:
anaerobic digestion; biomasses; methane potential; hydrogen, two-stage systems microbial communities; PCR-DGGE; real-time PCR, dynamics, richness
Elenco autori:
G. Merlino, A. Rizzi, A. Tenca, A. Schievano, R. Oberti, F. Adani, D. Daffonchio
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