Evaluation of the anaerobic digestion of winery wastewater: Effect of fly ash in anaerobic sequencing batch reactor

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dc.contributor.authorLauzurique, Yeney
dc.contributor.authorMeza, Ariel
dc.contributor.authorHuilinir, Cesar
dc.contributor.authorSalazar-Gonzalez, Ricardo
dc.contributor.authorVargas-Morales, Gustavo
dc.date.accessioned2025-01-20T17:30:46Z
dc.date.available2025-01-20T17:30:46Z
dc.date.issued2023
dc.description.abstractThe addition of fly ash (FA) to an anaerobic reactor has been studied mainly in batch tests. Nevertheless, the FA effect on the continuous operation of an anaerobic bioreactor has not been addressed. Therefore, the present work shows the effect of FA on the continuous operation of anaerobic sequencing reactors (ASBRs) treating winery wastewater. Two ASBRs were used and operated continuously for 302 days under mesophilic conditions with a hydraulic retention time (HRT) of 3 days. The effect of the organic loading rate (ORL) on the operation was investigated for 204 days. After that, to evaluate the effect of FA as an anaerobic digestion (AD) enhancer, one of the reactors was dosed with 25 mg L-1 of FA for 98 days. The FA dosages allowed an increase in methane production and organic matter removal by 75% and 42%, respectively, concerning the system without FA. Furthermore, the importance of FA in the process was demonstrated by obtaining a yield of 334 NmL CH4 COD removed-1. This result represented a 12% increase compared to the yield previously obtained in the same reactor before adding the FA. Additionally, acetic acid and propionic acid were the predominant volatile fatty acids (VFAs) in the process. Finally, the metals present in the digested sludge after FA addition did not exceed the limits allowed by Chilean legislation.
dc.description.funderNational Agency for Research and Development (ANID) /post-doc project FONDECYT
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jece.2023.110997
dc.identifier.eissn2213-3437
dc.identifier.issn2213-2929
dc.identifier.urihttps://doi.org/10.1016/j.jece.2023.110997
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91608
dc.identifier.wosidWOS:001083209600001
dc.issue.numero5
dc.language.isoen
dc.revistaJournal of environmental chemical engineering
dc.rightsacceso restringido
dc.subjectFly ash
dc.subjectAnaerobic sequencing batch reactor
dc.subjectWinery wastewater
dc.subjectTrace elements
dc.subjectMethane production
dc.subjectDirect interspecies electron transfer
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.titleEvaluation of the anaerobic digestion of winery wastewater: Effect of fly ash in anaerobic sequencing batch reactor
dc.typeartículo
dc.volumen11
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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