Electrotrophic perchlorate reduction by a psychrotolerant acidophile isolated from an acid rock drainage in Antarctica

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dc.article.number108458
dc.catalogadoryvc
dc.contributor.authorTorres-Rojas, Felipe
dc.contributor.authorHernández, Pedro
dc.contributor.authorVargas Barrios, Tomás Ignacio
dc.contributor.authorNancucheo, Iván
dc.date.accessioned2024-09-27T20:04:54Z
dc.date.available2024-09-27T20:04:54Z
dc.date.issued2023
dc.description.abstractA new extremophilic isolate (USS-CCA7) was obtained from an acidic environment (pH -3.2) in Antarctica phylogenetically related to Acidithiobacillus ferrivorans; its electrotrophic capacities were evaluated in a three-electrode electrochemical cell. Cyclic voltammetry showed cathodic peaks of-428 mV,-536 mV, and-634 mV (vs. Ag/AgCl; pH = 1.7; 3 M KCl) for nitrate, oxygen, and perchlorate, respectively. The catalytic role of this microorganism was also observed by a decrease in the charge transfer resistance registered via electrochemical impedance spectroscopy. Five-day chronoamperometry of culture at pH = 1.7, USS-CCA7 showed a perchlorate removal rate of 19.106 +/- 1.689 mgL-1 day-1 and a cathodic efficiency of 112 +/- 5.2 %. Growth on electrodes was observed by epifluorescence and scanning electron microscopy. Interestingly, the results showed that toward higher pH, the cathodic peak of perchlorate is reduced in the voltammetric profiles. This study highlights the use of this psychrotolerant acidophile for the bioremediation of harsh perchlorate-pressured terrestrial under acidic conditions.
dc.fechaingreso.objetodigital2024-09-27
dc.format.extent11 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.bioelechem.2023.108458
dc.identifier.eissn1878-562X
dc.identifier.issn1567-5394
dc.identifier.urihttps://doi.org/10.1016/j.bioelechem.2023.108458
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/87999
dc.identifier.wosidWOS:001001481300001
dc.information.autorucEscuela de Ingeniería; Vargas Barrios, Tomás Ignacio; S/I; 1133520
dc.language.isoen
dc.nota.accesocontenido parcial
dc.publisherElsevier Science SA
dc.revistaBioelectrochemistry
dc.rightsacceso restringido
dc.subjectAcidithiobacillus ferrivorans
dc.subjectAcidophile
dc.subjectAntarctica
dc.subjectBiocathode
dc.subjectExtremophile
dc.subjectOxyanions
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.titleElectrotrophic perchlorate reduction by a psychrotolerant acidophile isolated from an acid rock drainage in Antarctica
dc.typeartículo
dc.volumen152
sipa.codpersvinculados1133520
sipa.trazabilidadWOS;2023-07-06
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