Synthetic greywater treatment using a scalable granular activated carbon bioelectrochemical reactor

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dc.article.number108741
dc.catalogadorpva
dc.contributor.authorGallardo Bustos, Carlos
dc.contributor.authorTapia Flores, Natalia F.
dc.contributor.authorVargas Cucurella, Ignacio Tomás
dc.contributor.otherCEDEUS (Chile)
dc.date.accessioned2024-09-23T18:41:50Z
dc.date.available2024-09-23T18:41:50Z
dc.date.issued2024
dc.description.abstractGreywater reuse has emerged as a promising solution for addressing water shortages. However, greywater needs treatment before reuse to meet the required water quality standards. Conventional wastewater treatment technologies are unsuitable for recreating highly decentralized domestic greywater. This study evaluated bioelectrochemical reactors (BERs) with granular activated carbon (GAC) as a sustainable alternative for developing decentralized and low-cost biological treatment systems. BERs using GAC as the anode material and conventional GAC biofilters (BFs) for synthetic greywater treatment were operated in batch mode for 110 days in two stages: (i) with polarized anodes at −150 mV vs. Ag/AgCl and (ii) as a microbial fuel cell with an external resistance of 1 kΩ. Anode polarization produced an electrosorption effect, increasing the ion removal of the BERs. Power production during the operation and cyclic voltammetry tests of the extracted granules revealed electrochemically active biofilm development on the BERs. Although low power density (0.193 ± 0.052 µW m−3) was observed in BERs, they showed a similar performance in sCOD removal (BER = 91.6–89.6 %; BF = 96.2–93.2 %) and turbidity removal (BER = 81–82 %; BF = 30–62 %) to BFs that used 50 % aeration. Additionally, scanning electron microscopy of sampled granules showed higher biomass formation in BER granules than in BF granules, suggesting a higher contribution of sessile (vs. planktonic) cells to the treatment. Thus, the results highlight the synergistic removal effect of the GAC-based BER. The scalable design presented in this study represents a proof-of-concept for developing BERs to use in decentralized greywater treatment systems.
dc.description.funderCEDEUS
dc.description.funderFONDECYT
dc.description.funderANID FONDAP
dc.description.funderConsorcio Tecnológico del Agua
dc.fuente.origenSCOPUS
dc.identifier.doi10.1016/j.bioelechem.2024.108741
dc.identifier.eissn1878-562X
dc.identifier.issn1567-5394
dc.identifier.scopusidSCOPUS_ID:85194194855
dc.identifier.urihttps://doi.org/10.1016/j.bioelechem.2024.108741
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/87904
dc.identifier.wosidWOS:001247293700001
dc.information.autorucEscuela de Ingeniería; Gallardo Bustos, Carlos; S/I; 1101920
dc.information.autorucEscuela de Ingeniería; Tapia Flores, Natalia F.; S/I; 162433
dc.information.autorucEscuela de Ingeniería; Vargas Cucurella, Ignacio Tomás; 0000-0001-5974-2795; 17080
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final9
dc.pagina.inicio1
dc.publisherElsevier
dc.revistaBioelectrochemistry
dc.rightsacceso restringido
dc.subjectGreywater
dc.subjectMicrobial electrochemical technologies
dc.subjectBioelectrochemical reactor
dc.subjectGranular activated carbon
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.subject.ods06 Clean water and sanitation
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleSynthetic greywater treatment using a scalable granular activated carbon bioelectrochemical reactor
dc.typeartículo
dc.volumen159
sipa.codpersvinculados1101920
sipa.codpersvinculados162433
sipa.codpersvinculados17080
sipa.trazabilidadSCOPUS;2024-06-02
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