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Low-strength ultrasonication positively affects methanogenic granules toward higher AD performance : implications from microbial community shift
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Cho, Si-Kyung, Kim, Dong-Hoon, Quince, Christopher, Im, Wan-Taek, Oh, Sae-Eun and Shin, Seung Gu (2016) Low-strength ultrasonication positively affects methanogenic granules toward higher AD performance : implications from microbial community shift. Ultrasonics Sonochemistry, 32 . pp. 198-203. doi:10.1016/j.ultsonch.2016.03.010 ISSN 1350-4177.
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Official URL: http://dx.doi.org/10.1016/j.ultsonch.2016.03.010
Abstract
To elucidate the enhanced methane yield from organic wastes, the effects of low-strength ultrasonication on the microbial community structures in upflow anaerobic sludge blanket reactors were for the first time analyzed using pyrosequencing. Interestingly, a more even microbial community was observed in the ultrasonicated granules than in the control, which could compensate for the decreased richness and resulted in comparable (archaea) or even higher (bacteria) diversity. The ultrasonicated granules contained higher levels of δ-Proteobacteria, of which many are reportedly potential syntrophs, as well as methanogenic genera Methanosaeta, Methanotorris, and Methanococcus. The increased presence of syntrophic bacteria with their methanogenic partners was discussed with respect to hydrogen flux; their selective proliferation seems to be responsible for the enhanced anaerobic performance. This study is the first research shedding light on the novel function of low-strength ultrasound shifting the microbial structure towards better biogas production performance, and will facilitate application of low-strength ultrasound to other bioprocesses.
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Biomedical Sciences Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Biomedical Sciences > Microbiology & Infection Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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Journal or Publication Title: | Ultrasonics Sonochemistry | ||||||
Publisher: | Elsevier | ||||||
ISSN: | 1350-4177 | ||||||
Official Date: | 8 September 2016 | ||||||
Dates: |
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Volume: | 32 | ||||||
Page Range: | pp. 198-203 | ||||||
DOI: | 10.1016/j.ultsonch.2016.03.010 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access |
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