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EFFECT OF A SONO-THERMAL PRE-TREATMENT OVER METHANE PRODUCTION, SPECIFIC ACTIVITIES AND THE MICROBIAL COMMUNITY OF SLUDGE ANAEROBIC DIGESTERS

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dc.creatorPATRICIO ALEJANDRO NEUMANN LANGDON
dc.date2020
dc.date.accessioned2025-01-10T15:16:16Z
dc.date.available2025-01-10T15:16:16Z
dc.date.issued2020
dc.description.abstractAS PRE-TREATMENT PROCESSES IMPROVE BIOGAS PRODUCTION DURING ANAEROBIC DIGESTION OF SEWAGE SLUDGE, IT IS EXPECTED THAT THE MICROBIAL COMMUNITIES OF DIGESTERS WILL ADAPT TO THE EXPOSITION TO PRE-TREATED SUBSTRATE IN TERMS OF THEIR COMPOSITION OR ACTIVITY. IN THIS STUDY, THE INFLUENCE OF SONO-THERMAL PRE-TREATMENT OVER THE MICROBIAL COMMUNITIES OF DIGESTERS OPERATED AT DECREASING SOLIDS RETENTION TIMES (SRT) WAS ASSESSED. DIFFERENCES IN THE MICROBIOME AND SPECIFIC ACTIVITIES WERE OBSERVED AND ASSOCIATED WITH PRE-TREATMENT AND SRT. PRE-TREATMENT INCREASED METHANE YIELDS (19.1?29.9%), BACTERIAL RANGE-WEIGHTED RICHNESS (27.8?46.5%) AND ARCHAEA CONCENTRATION (ONE ORDER OF MAGNITUDE IN TERMS OF 16S RDNA GVS?1), WITHOUT CAUSING PROCESS INHIBITION OR INSTABILITY. NO EFFECT OVER ARCHAEA RICHNESS WAS OBSERVED, WHICH WAS DOMINATED BY THE PRESENCE OF ACETOCLASTIC METHANOGENS. HYDROLYTIC AND ACIDOGENIC ACTIVITIES WERE SIMILAR AMONG THE REACTORS AND ACROSS SRT, WITH VALUES OF 1.55?2.28 GCOD?1D?1 AND 1.45?1.88 GCOD?1D?1, RESPECTIVELY. METHANOGENIC ACTIVITY SHOWED A POSITIVE CORRELATION WITH SRT, WITH VALUES OF 0.12?0.13 GCOD GVS?1 D?1 AT 7.5 DAYS SRT AND 0.31?0.37 GCOD GVS?1 D?1 AT 30 DAYS SRT. OVERALL, THE RESULTS SHOWN THAT THE MAIN DRIVERS OF THE OBSERVED EFFECTS OVER METHANE YIELD AND THE MICROBIOME WERE ORGANIC LOADING RATE AND THE SOLUBILIZATION CAUSED BY PRE-TREATMENT.
dc.formatapplication/pdf
dc.identifier.doi10.1007/s12649-020-01142-x
dc.identifier.issn1877-265X
dc.identifier.issn1877-2641
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/11220
dc.languagespa
dc.publisherWaste and Biomass Valorization
dc.relation.uri10.1007/s12649-020-01142-x
dc.rightsPUBLICADA
dc.titleEFFECT OF A SONO-THERMAL PRE-TREATMENT OVER METHANE PRODUCTION, SPECIFIC ACTIVITIES AND THE MICROBIAL COMMUNITY OF SLUDGE ANAEROBIC DIGESTERS
dc.title.alternativeEFECTO DE UN PRETRATAMIENTO SONOTÉRMICO SOBRE LA PRODUCCIÓN DE METANO, LAS ACTIVIDADES ESPECÍFICAS Y LA COMUNIDAD MICROBIANA DE LOS DIGESTORES ANAERÓBICOS DE LODOS
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.SedeCHILLÁN
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