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dc.contributor.authorSun, Jing
dc.contributor.authorDai, Xiaohu
dc.contributor.authorWang, Qilin
dc.contributor.authorPan, Yuting
dc.contributor.authorNi, Bing-Jie
dc.date.accessioned2017-06-15T02:03:40Z
dc.date.available2017-06-15T02:03:40Z
dc.date.issued2016
dc.identifier.issn2045-2322
dc.identifier.doi10.1038/srep35312
dc.identifier.urihttp://hdl.handle.net/10072/339872
dc.description.abstractIn this work, a mathematical model based on growth kinetics of microorganisms and substrates transportation through biofilms was developed to describe methane production and sulfate reduction with ethanol being a key electron donor. The model was calibrated and validated using experimental data from two case studies conducted in granule-based Upflow Anaerobic Sludge Blanket reactors. The results suggest that the developed model could satisfactorily describe methane and sulfide productions as well as ethanol and sulfate removals in both systems. The modeling results reveal a stratified distribution of methanogenic archaea, sulfate-reducing bacteria and fermentative bacteria in the anaerobic granular sludge and the relative abundances of these microorganisms vary with substrate concentrations. It also indicates sulfate-reducing bacteria can successfully outcompete fermentative bacteria for ethanol utilization when COD/SO42− ratio reaches 0.5. Model simulation suggests that an optimal granule diameter for the maximum methane production efficiency can be achieved while the sulfate reduction efficiency is not significantly affected by variation in granule size. It also indicates that the methane production and sulfate reduction can be affected by ethanol and sulfate loading rates, and the microbial community development stage in the reactor, which provided comprehensive insights into the system for its practical operation.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherNature Macmillan
dc.relation.ispartofpagefrom35312-1
dc.relation.ispartofpageto35312-11
dc.relation.ispartofjournalScientific Reports
dc.relation.ispartofvolume6
dc.subject.fieldofresearchEnvironmental biotechnology not elsewhere classified
dc.subject.fieldofresearchcode410399
dc.titleModelling methane production and sulfate reduction in anaerobic granular sludge reactor with ethanol as electron donor
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
gro.hasfulltextFull Text
gro.griffith.authorWang, Qilin


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