Comparative performance and microbial community of single-phase and two-phase anaerobic systems co-digesting cassava pulp and pig manure
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Panichnumsin P., Ahring B.K., Nopharatana A., Chaipresert P.
Publisher: World Academy of Science, Engineering and Technology (WASET)
Publication year: 2010
Journal: Proceedings of the World Academy of Science, Engineering and Technology (2010-376X)
Volume number: 62
Start page: 721
End page: 726
Number of pages: 6
ISSN: 2010-376X
Languages: English-Great Britain (EN-GB)
Abstract
In this study, we illustrated the performance and microbial community of single- and two-phase systems anaerobically co-digesting cassava pulp and pig manure. The results showed that the volatile solid reduction and biogas productivity of two-phase CSTR were 66 ฑ 4% and 2000 ฑ 210 ml l -1 d -1, while those of singlephase CSTR were 59 ฑ 1% and 1670 ฑ 60 ml l -1 d -1, respectively. Codigestion in two-phase CSTR gave higher 12% solid degradation and 25% methane production than single-phase CSTR. Phylogenetic analysis of 16S rDNA clone library revealed that the Bacteroidetes were the most abundant group, followed by the Clostridia in singlephase CSTR. In hydrolysis/acidification reactor of two-phase system, the bacteria within the phylum Firmicutes, especially Clostridium, Eubacteriaceae and Lactobacillus were the dominant phylogenetic groups. Among the Archaea, Methanosaeta sp. was the exclusive predominant in both digesters while the relative abundance of Methanosaeta sp. and Methanospirillum hungatei differed between the two systems.
Keywords
Anaerobic co-digestion, Microbial diversity
Contact Information