A PRACTICAL APPROACH FOR ESTIMATING INFLUENT-EFFLUENT MASS FLOW DIFFERENCES IN DAIRY MANURE-BASED ANAEROBIC CO-DIGESTION SYSTEMS

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dc.contributor.authorLabatut, Rodrigo A.
dc.contributor.authorMorris, James W.
dc.contributor.authorGooch, Curt A.
dc.date.accessioned2025-01-20T21:01:19Z
dc.date.available2025-01-20T21:01:19Z
dc.date.issued2022
dc.description.abstractDuring co-digestion of dairy manure and off-farm organic waste in farm anaerobic co-digestion (AcoD) systems, the process's conversion of biodegradable organics to biogas reduces the volumetric mass (or mass-volume) of the effluent discharged compared to the mass-volume fed. In this study, we present three methods for estimating the mass-flow difference between influent and effluent due to conversion to biogas based on widely accepted, rigorously applied, biological and engineering principles. Monthly operating data from three full-scale AcoD systems, operated under different conditions for a full year were used to compare results using the three calculation methods. Results revealed that the predictions of influent mass flow loss obtained using a simplified input-based method primarily based on influent volumetric flow rates and biodegradability data were in good agreement with those obtained using more accurate, real-time data, namely methane concentration and biogas production. For AcoD systems adding off-site wastes at around 30% or less of the total influent volatile solids (VS), the estimated reduction in effluent flow was in the range of 3% or less. In one case, for VS additions up to approximately 60% of the AcoD system's influent load, the reduction was 12%. Accepted fundamental water vapor relationships were also applied to biogas generation. Biogas water vapor loses were estimated to comprise approximately 0.2% of the total biogas mass-volume typically produced. Since in most anaerobic digestion systems, biogas condensate water is returned to the influent, this insignificant amount may be ignored.
dc.fuente.origenWOS
dc.identifier.doi10.13031/aea.14180
dc.identifier.eissn1943-7838
dc.identifier.issn0883-8542
dc.identifier.urihttps://doi.org/10.13031/aea.14180
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92858
dc.identifier.wosidWOS:000891962100017
dc.issue.numero1
dc.language.isoen
dc.pagina.final176
dc.pagina.inicio165
dc.revistaApplied engineering in agriculture
dc.rightsacceso restringido
dc.subjectAnaerobic
dc.subjectBiogas
dc.subjectCo-digestion
dc.subjectDairy manure
dc.subjectDigestion
dc.subjectFood waste
dc.subjectVolume-mass flow conversion
dc.subject.ods06 Clean Water and Sanitation
dc.subject.ods07 Affordable and Clean Energy
dc.subject.ods12 Responsible Consumption and Production
dc.subject.odspa06 Agua limpia y saneamiento
dc.subject.odspa07 Energía asequible y no contaminante
dc.subject.odspa12 Producción y consumo responsable
dc.titleA PRACTICAL APPROACH FOR ESTIMATING INFLUENT-EFFLUENT MASS FLOW DIFFERENCES IN DAIRY MANURE-BASED ANAEROBIC CO-DIGESTION SYSTEMS
dc.typeartículo
dc.volumen38
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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