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Kim, Jaai
School of Urban and Environmental Engineering
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A long-term study on the effect of magnetite supplementation in continuous anaerobic digestion of dairy effluent - Magnetic separation and recycling of magnetite

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dc.contributor.authorBaek Gahyunko
dc.contributor.authorJung, Heehungko
dc.contributor.authorKim, Jaaiko
dc.contributor.authorLee, Changsooko
dc.date.available2017-06-16T04:20:47Z-
dc.date.created2017-06-04ko
dc.date.issued201710ko
dc.identifier.citationBIORESOURCE TECHNOLOGY, v.241, no., pp.830 - 840ko
dc.identifier.issn0960-8524ko
dc.identifier.urihttp://scholarworks.unist.ac.kr/handle/201301/22210-
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0960852417309057ko
dc.description.abstractPromotion of direct interspecies electron transfer (DIET) between exoelectrogenic bacteria and electron-utilizing methanogens has recently been discussed as a new method for enhanced biomethanation. This study evaluated the effect of magnetite-promoted DIET in continuous anaerobic digestion of dairy effluent and tested the magnetic separation and recycling of magnetite to avoid continuous magnetite addition. The applied magnetite recycling method effectively supported enhanced DIET activity and biomethanation performance over a long period (>250 days) without adding extra magnetite. DIET via magnetite particles as electrical conduits was likely the main mechanism for the enhanced biomethanation. Magnetite formed complex aggregate structures with microbes, and magnetite recycling also helped retain more biomass in the process. Methanosaeta was likely the major methanogen group responsible for DIET-based methanogenesis, in association with Proteobacteria and Chloroflexi populations as syntrophic partners. The recycling approach proved robust and effective, highlighting the potential of magnetite recycling for high-rate biomethanation.ko
dc.languageENGko
dc.publisherELSEVIER SCI LTDko
dc.subjectAnaerobic digestionko
dc.subjectDirect interspecies electron transferko
dc.subjectMagnetite recyclingko
dc.subjectMethanogenesisko
dc.subjectMicrobial community structureko
dc.titleA long-term study on the effect of magnetite supplementation in continuous anaerobic digestion of dairy effluent - Magnetic separation and recycling of magnetiteko
dc.typeARTICLEko
dc.identifier.pid2042null
dc.identifier.pid1263null
dc.identifier.rimsid28573ko
dc.identifier.scopusid2-s2.0-85020729098ko
dc.identifier.wosid000405502400098ko
dc.type.rimsAko
dc.identifier.doihttp://dx.doi.org/10.1016/j.biortech.2017.06.018ko
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