Enhanced methane production from protein and lipid-rich wastewater using powdered oat husk-biochar

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dc.contributor.authorPages-Diaz, Jhosane
dc.contributor.authorVidal, Ivan
dc.contributor.authorHuilinir, Cesar
dc.contributor.authorHernandez-Velez, Leslie
dc.contributor.authorLorenzo-Llanes, Junior
dc.date.accessioned2025-01-20T16:11:28Z
dc.date.available2025-01-20T16:11:28Z
dc.date.issued2024
dc.description.abstractBACKGROUNDDue to the lower degradation and the potential inhibitory compounds present in slaughterhouse wastewater (SW), its industrial applications are often limited to methane production. This study investigated the combined effect of conductive material such as oat husk-biochar at different concentrations (0, 5, 10, 15, 20, 25 g L-1) and particle sizes (i.e., Powder Biochar (PB) (0.05-0.08 mm) vs. Granular Biochar (GB) (0.8-1.0 mm)) in the methane production, biodegradability, kinetic parameters, methanogenic activity and digestate quality of SW, using a multilevel factorial design.RESULTSExperimental results showed that lower concentration (5, 10 g L-1) increased the methane yield up to 35% for PB and between 11 and 13% for GB compared to the control reactor. The total ammoniacal nitrogen concentrations in the digestate declined between 14% and 52% for all biochar dosages and particle sizes. PB improved the specific methanogenic activity of the biomass compared with GB, indicating that PB can support a well-balanced methanogenic community compared with GB inside the digester. The multiple response optimization process computed that 7.5 g L-1 of PB is optimal to increase the methane yield, the COD degradation efficiency and shorten the lag phase. On the other hand, doses higher than 15 g L-1 hinder methane generation.CONCLUSIONSPB supplementation has significant potential to improve the anaerobic degradation of SW. The improvement is attributed to the higher specific surface area, contributing to better support and microbial activity. (c) 2024 Society of Chemical Industry (SCI).
dc.fuente.origenWOS
dc.identifier.doi10.1002/jctb.7726
dc.identifier.eissn1097-4660
dc.identifier.issn0268-2575
dc.identifier.urihttps://doi.org/10.1002/jctb.7726
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90273
dc.identifier.wosidWOS:001285533200001
dc.issue.numero11
dc.language.isoen
dc.pagina.final2394
dc.pagina.inicio2381
dc.revistaJournal of chemical technology and biotechnology
dc.rightsacceso restringido
dc.subjectoat husk-biochar
dc.subjectbiochar particle size
dc.subjectbiochar concentration
dc.subjectslaughterhouse wastewater
dc.subjectswine manure
dc.subject.ods07 Affordable and Clean Energy
dc.subject.ods12 Responsible Consumption and Production
dc.subject.ods06 Clean Water and Sanitation
dc.subject.odspa07 Energía asequible y no contaminante
dc.subject.odspa12 Producción y consumo responsable
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleEnhanced methane production from protein and lipid-rich wastewater using powdered oat husk-biochar
dc.typeartículo
dc.volumen99
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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