Characterization of perchlorate desorption and regeneration of the highly selective ion-exchange resin A530E using 1-butyl-3-methylimidazole chloride, 1-butyl-3-methylimidazole hydroxide, and choline chloride

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dc.article.number118977
dc.catalogadorgjm
dc.contributor.authorMuñoz Arango, Diana Carolina
dc.contributor.authorMontaño, Diego F.
dc.contributor.authorVeloso Cid, Nicolás Eduardo
dc.contributor.authorTorres-Rojas, Felipe
dc.contributor.authorCanales Muñoz, Roberto
dc.contributor.authorIsaacs Casanova, Mauricio
dc.contributor.authorHevia, Samuel
dc.contributor.authorVargas Cucurella, Ignacio Tomás
dc.date.accessioned2025-09-03T15:37:20Z
dc.date.available2025-09-03T15:37:20Z
dc.date.issued2025
dc.description.abstractPerchlorate is an endocrine disruptor considered an emerging contaminant that poses risks to human health and the environment. Using selective resins is a cost-effective and reliable method for removing perchlorate from drinking water, yet regenerating these resins remains challenging. This study investigates the desorption of perchlorate from a highly selective ion-exchange resin (A530E) using 1-butyl-3-methylimidazole chloride ([Bmim][Cl]), 1-butyl-3-methylimidazole hydroxide ([Bmim][OH]), and choline chloride ([Chl][Cl]). Through three consecutive desorption cycles, [Bmim][OH] exhibited superior performance, achieving up to 23.48 mg·g−1 perchlorate desorption and recovery of nearly 22 % of the resin’s initial adsorption capacity in the second cycle, doubling the yields of the other treatments. Nevertheless, overall regeneration efficiency remained below 50 %, underscoring the need to optimize regenerative strategies. Fourier-transform infrared (FT-IR) spectroscopy indicates specific interactions between the organic salts, perchlorate, and functional groups of the resin. In contrast, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX) revealed notable changes in surface chemistry and morphology upon desorption. This study demonstrates that the ionic liquids used here can be effective desorption agents for removing perchlorate loaded from resins, thus offering a pathway for applying alternative solutions in water treatment.
dc.format.extent12 páginas
dc.fuente.origenORCID
dc.identifier.doi10.1016/j.jece.2025.118977
dc.identifier.urihttps://doi.org/10.1016/j.jece.2025.118977
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/105541
dc.information.autorucEscuela de Ingeniería; Muñoz Arango, Diana Carolina; S/I; 1030575
dc.information.autorucEscuela de Química; Veloso Cid, Nicolás Eduardo; S/I; 1070603
dc.information.autorucEscuela de Ingeniería; Canales Muñoz, Roberto; 0000-0002-2535-6527; 1039369
dc.information.autorucEscuela de Química; Isaacs Casanova, Mauricio; 0000-0003-0503-0949; 1009751
dc.information.autorucEscuela de Ingeniería; Vargas Cucurella, Ignacio Tomás; 0000-0001-5974-2795; 17080
dc.issue.numero5
dc.language.isoen
dc.nota.accesocontenido parcial
dc.revistaJournal of Environmental Chemical Engineering
dc.rightsacceso restringido
dc.subjectEmerging contaminants
dc.subjectPerchlorateIon-exchange resin
dc.subjectOrganic salts
dc.subjectIonic liquids
dc.subjectAnd desorption
dc.subject.ddc510
dc.subject.deweyMatemática física y químicaes_ES
dc.titleCharacterization of perchlorate desorption and regeneration of the highly selective ion-exchange resin A530E using 1-butyl-3-methylimidazole chloride, 1-butyl-3-methylimidazole hydroxide, and choline chloride
dc.typeartículo
dc.volumen13
sipa.codpersvinculados1030575
sipa.codpersvinculados1070603
sipa.codpersvinculados1039369
sipa.codpersvinculados1009751
sipa.codpersvinculados17080
sipa.trazabilidadORCID;2025-09-01
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