Shifts in Bacterial Community Structure in the Process of Composting of Organic Wastes
Journal Title: International Journal of Advanced Biotechnology and Research. - Year 2016, Vol 7, Issue 2
Abstract
Using 454 pyrosequencing, changes in the community structure of composting bacteria were estimated over 270 days. The compost contained the organic fraction of municipal solid waste, sawdust polluted by oil, and sewage sludge. All of these wastes are typical for a Russian city and they were obtained in Kazan (Tatarstan Republic, Russia). In the initial stage of composting, the taxa Lactobacialles, Rhodospiralles, Burkholderiales, and Xanthmonadales dominated in the compost. By the end of the thermophilic stage, the dominant species changed: typical compost inhabitants belonging to the taxa Flavobacteriales, Chitinophagaceae, and Bacterioidetes, as well as non-typical taxa Ectothiorhodospiraceae and Parvibaculum sp., were observed in the compost. The presence of the latter two taxa may be explained by the presence of oil-polluted sawdust in the composting mixture. In the later stage, the dominant taxa remained the same; however, their relative abundance declined.
Authors and Affiliations
1*Polina Galitskaya, 2Liliya Biktasheva, 3Tatyana Grigoryeva and 2Svetlana Selivanovskaya
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