Identity and diversity of archaeal communities during anaerobic co-digestion of chicken feathers and other animal wastes - PubMed (original) (raw)
Identity and diversity of archaeal communities during anaerobic co-digestion of chicken feathers and other animal wastes
Yun Xia et al. Bioresour Technol. 2012 Apr.
Abstract
Digestion of raw feathers in anaerobic digesters inoculated with adapted swine manure, slaughterhouse sludge or dairy manure was investigated using twelve 42-L anaerobic digesters at 25°C. After 120days 74%, 49% and 40% added feathers were converted to methane in swine manure, dairy manure and slaughterhouse sludge anaerobic digesters respectively. 16S rRNA gene clone library analyses identified twenty-one operational taxonomic units containing clone sequences from 5 genera, 5 families and 2 phyla of members of the Archaea from 158 sequenced clones. Fluorescence insitu hybridization revealed that methanogens from the Methanomicrobiales, Methanosarcinales and Methanobacteriales constituted a major fraction (>78%) of these Archaea. A high correlation was seen between the distribution of functional archaeal groups and the NH(3)-N levels of digester mixed liquors. The compositions of archaeal communities fed different substrates were statistically significantly different (P<0.05).
Crown Copyright © 2012. Published by Elsevier Ltd. All rights reserved.
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