Synergistic effect of electrotrophic perchlorate reducing microorganisms and chemically modified electrodes for enhancing bioelectrochemical perchlorate removal

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dc.article.number116442
dc.catalogadorpva
dc.contributor.authorTorres Rojas, Felipe Ernesto
dc.contributor.authorMuñoz Arango, Diana Carolina
dc.contributor.authorCanales, Camila Pía
dc.contributor.authorHevia, Samuel A.
dc.contributor.authorLeyton Soto, Felipe Arturo
dc.contributor.authorVeloso Cid, Nicolás Eduardo
dc.contributor.authorIsaacs Casanova, Mauricio
dc.contributor.authorVargas Cucurella, Ignacio Tomás
dc.contributor.otherCEDEUS (Chile)
dc.date.accessioned2023-06-27T21:39:12Z
dc.date.available2023-06-27T21:39:12Z
dc.date.issued2023
dc.description.abstractPerchlorate has been described as an emerging pollutant that compromises water sources and human health. In this study, a new electrotrophic perchlorate reducing microorganism (EPRM) isolated from the Atacama Desert, Dechloromonas sp. CS-1, was evaluated for perchlorate removal in water in a bioelectrochemical reactor (BER) with a chemically modified electrode. BERs were operated for 17 days under batch mode conditions with an applied potential of −500 mV vs. Ag/AgCl. Surface analysis (i.e., SEM, XPS, FT-IR, RAMAN spectroscopy) on the modified electrode demonstrated heterogeneous transformation of the carbon fibers with the incorporation of nitrogen functional groups and the oxidation of the carbonaceous material. The BERs with the modified electrode and the presence of the EAM reached high cathodic efficiency (90.79 ± 9.157%) and removal rate (0.34 ± 0.007 mol m−3-day) compared with both control conditions. The observed catalytic enhancement of CS-1 was confirmed by a reduction in the charge transfer resistance obtained by electrochemical impedance spectroscopy (EIS). Finally, an electrochemical kinetic study revealed an eight-electron perchlorate bioreduction reaction at −638.33 ± 24.132 mV vs. Ag/AgCl. Therefore, our results show the synergistic effect of EPRM and chemically modified electrodes on perchlorate removal in a BER.
dc.fechaingreso.objetodigital2023-06-28
dc.fuente.origenORCID
dc.identifier.doi10.1016/j.envres.2023.116442
dc.identifier.urihttps://doi.org/10.1016/j.envres.2023.116442
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/73591
dc.information.autorucEscuela de Ingeniería; Torres Rojas, Felipe Ernesto; 0000-0001-5595-6809; 1031254
dc.information.autorucEscuela de Ingeniería; Muñoz Arango, Diana Carolina; 0000-0001-6676-1943; 1030575
dc.information.autorucEscuela de Química; Leyton Soto Felipe Arturo; 0000-0003-3404-5592; 205156
dc.information.autorucEscuela de Química; Veloso Cid, Nicolás Eduardo; 0000-0002-8553-1374; 1070603
dc.information.autorucEscuela de Química; Isaacs Casanova Mauricio Alejandro; 0000-0003-0503-0949; 1009751
dc.information.autorucEscuela de Ingeniería; Vargas Cucurella Ignacio Tomas; 0000-0001-5974-2795; 17080
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final12
dc.pagina.inicio1
dc.revistaEnvironmental Researches_ES
dc.rightsacceso restringido
dc.subjectBioelectrochemical reactorses_ES
dc.subjectDechloromonases_ES
dc.subjectModified electrodees_ES
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.subject.ods06 Clean water and sanitation
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleSynergistic effect of electrotrophic perchlorate reducing microorganisms and chemically modified electrodes for enhancing bioelectrochemical perchlorate removales_ES
dc.typeartículo
dc.volumen233
sipa.codpersvinculados1031254
sipa.codpersvinculados1030575
sipa.codpersvinculados205156
sipa.codpersvinculados1070603
sipa.codpersvinculados1009751
sipa.codpersvinculados17080
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