Metagenomic insight into methanogenic reactors promoting direct interspecies electron transfer via granular activated carbon
- Authors
- Park, Jeong-Hoon; Park, Jong-Hun; Seong, Hoon Je; Sul, Woo Jun; Jin, Kang-Hyun; Park, Hee-Deung
- Issue Date
- 7월-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Anaerobic digestion; Direct interspecies electron transfer; Granular activated carbon; Metagenomics
- Citation
- BIORESOURCE TECHNOLOGY, v.259, pp.414 - 422
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 259
- Start Page
- 414
- End Page
- 422
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/74806
- DOI
- 10.1016/j.biortech.2018.03.050
- ISSN
- 0960-8524
- Abstract
- To provide insight into direct interspecies electron transfer via granular activated carbon (GAC), the effect of GAC supplementation on anaerobic digestion was evaluated. Compared to control samples, the GAC supplementation increased the total amount of methane production and its production rate by 31% and 72%, respectively. 16S rDNA sequencing analysis revealed a shift in the archaeal community composition; the Methanosarcina proportion decreased 17%, while the Methanosaeta proportion increased 5.6%. Metagenomic analyses based on shotgun sequencing demonstrated that the abundance of pilA and omcS genes belonging to Geobacter species decreased 69.4% and 29.4%, respectively. Furthermore, the analyses suggested a carbon dioxide reduction pathway rather than an acetate decarboxylation pathway for methane formation. Taken together, these results suggest that GAC improved methane production performance by shifting the microbial community and altering functional genes associated with direct interspecies electron transfer via conductive materials.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.