Robustness of archaeal populations in anaerobic co-digestion of dairy and poultry wastes

Yan Zhang, Esteban M. Zamudio Cañas, Zhenwei Zhu, Jessica L. Linville, Si Chen, Qiang He

Research output: Contribution to journalArticleResearchpeer-review

40 Citations (Scopus)

Abstract

The objective of this study is to investigate the responses of methanogen populations to poultry waste addition by comparing the archaeal microbial populations in continuous anaerobic digesters with or without the addition of poultry waste as a co-substrate. Poultry waste was characterized as an organic/nitrogen-rich substrate for anaerobic digestion. Supplementing dilute dairy waste with poultry waste for anaerobic co-digestion to increase organic loading rate by 50% resulted in improved biogas production. Elevated ammonia derived from poultry waste did not lead to process inhibition at the organic loadings tested, demonstrating the feasibility of the anaerobic co-digestion of dairy and poultry wastes for improved treatment efficiency. The stability of the anaerobic co-digestion process was linked to the robust archaeal microbial community, which remained mostly unchanged in community structure following increases in organic loading and ammonia levels. Surprisingly, Crenarchaeota archaeal populations, instead of the Euryarchaeota methanogens, dominated the archaeal communities in the anaerobic digesters. The ecological functions of these abundant non-methanogen archaeal populations in anaerobic digestion remain to be identified.

Original languageEnglish
Pages (from-to)779-785
Number of pages7
JournalBioresource Technology
Volume102
Issue number2
DOIs
StatePublished - 1 Jan 2011

Fingerprint

Poultry
Dairies
poultry
digestion
Methanogens
Anaerobic digestion
Ammonia
ammonia
substrate
Biofuels
Biogas
Substrates
organic nitrogen
biogas
microbial community
community structure
Nitrogen

Keywords

  • Anaerobic digestion
  • Animal waste
  • Archaea
  • Crenarchaeota
  • Methane

Cite this

Zhang, Yan ; Zamudio Cañas, Esteban M. ; Zhu, Zhenwei ; Linville, Jessica L. ; Chen, Si ; He, Qiang. / Robustness of archaeal populations in anaerobic co-digestion of dairy and poultry wastes. In: Bioresource Technology. 2011 ; Vol. 102, No. 2. pp. 779-785.
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Robustness of archaeal populations in anaerobic co-digestion of dairy and poultry wastes. / Zhang, Yan; Zamudio Cañas, Esteban M.; Zhu, Zhenwei; Linville, Jessica L.; Chen, Si; He, Qiang.

In: Bioresource Technology, Vol. 102, No. 2, 01.01.2011, p. 779-785.

Research output: Contribution to journalArticleResearchpeer-review

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