Hydrogen-based syntrophy in an electrically conductive biofilm anode
DC Field | Value | Language |
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dc.contributor.author | Dhar, Bipro Ranjan | - |
dc.contributor.author | Park, Jeong-Hoon | - |
dc.contributor.author | Park, Hee-Deung | - |
dc.contributor.author | Lee, Hyung-Sool | - |
dc.date.accessioned | 2021-09-01T17:55:14Z | - |
dc.date.available | 2021-09-01T17:55:14Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-03-01 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/67045 | - |
dc.description.abstract | We experimentally and theoretically investigated implications of H-2 and a rate-limiting step in a mixed-culture biofilm anode fed with n-butyrate, one of the poorest substrates to exoelectrogens. Acetate and i-butyrate were formed as intermediates during anaerobic degradation of n-butyrate, which suggested oxidative acetogenesis of n-butyrate in syntrophy with H-2 scavengers in the biofilm anode. Methane was not detected in an anode chamber, and no current was generated in the biofilm anode using H-2 as the electron donor. These results indicated that acetogens would be a main H-2 consumer in the biofilm. Pyrosequencing data showed dominance of Geobacter in the biofilm anode (83.6% of total sequences), along with Sphaerochaeta and Treponema, which supports the syntrophy between exoelectrogens and acetogens. Electrical conductivity of the butyrate-fed biofilm anode was as high as 0.67 mS/cm, demonstrating that EET does not limit current density in the biofilm. In-situ monitoring of dissolved H-2 concentration proved H-2 production (up to 12.4 mu M) and consumption during current generation in the biofilm, which supports significance of H-2-based syntrophy in the electrically conductive biofilm using n-butyrate as the primary electron donor. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | MICROBIAL FUEL-CELLS | - |
dc.subject | INTERSPECIES ELECTRON-TRANSFER | - |
dc.subject | RESISTANCE | - |
dc.subject | COMMUNITY | - |
dc.subject | KINETICS | - |
dc.subject | BACTERIA | - |
dc.subject | IMPACT | - |
dc.subject | SCALE | - |
dc.title | Hydrogen-based syntrophy in an electrically conductive biofilm anode | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Hee-Deung | - |
dc.identifier.doi | 10.1016/j.cej.2018.11.138 | - |
dc.identifier.scopusid | 2-s2.0-85056860625 | - |
dc.identifier.wosid | 000454137400021 | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.359, pp.208 - 216 | - |
dc.relation.isPartOf | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 359 | - |
dc.citation.startPage | 208 | - |
dc.citation.endPage | 216 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | MICROBIAL FUEL-CELLS | - |
dc.subject.keywordPlus | INTERSPECIES ELECTRON-TRANSFER | - |
dc.subject.keywordPlus | RESISTANCE | - |
dc.subject.keywordPlus | COMMUNITY | - |
dc.subject.keywordPlus | KINETICS | - |
dc.subject.keywordPlus | BACTERIA | - |
dc.subject.keywordPlus | IMPACT | - |
dc.subject.keywordPlus | SCALE | - |
dc.subject.keywordAuthor | Butyrate | - |
dc.subject.keywordAuthor | Hydrogen | - |
dc.subject.keywordAuthor | Geobacter | - |
dc.subject.keywordAuthor | Biofilm conductivity | - |
dc.subject.keywordAuthor | Acetogenesis | - |
dc.subject.keywordAuthor | Direct interspecies electron transfer | - |
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