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BDD Anodic Treatment of 6:2 Fluorotelomer Sulfonate (6:2 FTSA).Evaluation of Operating Variables and By-Product Formation

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BDD Anodic Treatment of 6:2 Fluorotelomer Sulfonate (6:2 FTSA).Evaluation of Operating Variables and By-Product Formation

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dc.contributor.author Urtiaga, Ane es_ES
dc.contributor.author Soriano, Álvaro es_ES
dc.contributor.author Carrillo Abad, Jorge es_ES
dc.date.accessioned 2021-05-21T03:32:17Z
dc.date.available 2021-05-21T03:32:17Z
dc.date.issued 2018-06 es_ES
dc.identifier.issn 0045-6535 es_ES
dc.identifier.uri http://hdl.handle.net/10251/166595
dc.description.abstract [EN] The concerns about the undesired impacts on human health and the environment of long chain perfluorinated alkyl substances (PFASs) have driven industrial initiatives to replace PFASs by shorter chain fluorinated homologues. 6:2 fluorotelomer sulfonic acid (6:2 FTSA) is applied as alternative to PFOS in metal plating and fluoropolymer manufacture. This study reports the electrochemical treatment of aqueous 6:2 FTSA solutions on microcrystalline BDD anodes. Bench scale batch experiments were performed, focused on assessing the effect of the electrolyte and the applied current density (5¿600 A m¿2) on the removal of 6:2 FTSA, the reduction of total organic carbon (TOC) and the fluoride release. Results showed that at the low range of applied current density (J¿=¿50 A m¿2), using NaCl, Na2SO4 and NaClO4, the electrolyte exerted a minimal effect on removal rates. The formation of toxic inorganic chlorine species such as ClO4¿ was not observed. When using Na2SO4 electrolyte, increasing the applied current density to 350¿600 A m¿2 promoted a notable enhancement of the 6:2 FTSA removal and defluorination rates, pointing to the positive contribution of electrogenerated secondary oxidants to the overall removal rate. 6:2 FTSA was transformed into shorter-chain PFCAs, and eventually into CO2 and fluoride, as TOC reduction was >90%. Finally, it was demonstrated that diffusion in the liquid phase was controlling the overall kinetic rate, although with moderate improvements due to secondary oxidants at very high current densities. es_ES
dc.description.sponsorship Support from MINECO and SPAIN-FEDER 2014e2020 to project CTM 2016-75509-R and to the Spanish Excellence Network E3TECH (CTQ 2015-71650-RDT) is acknowledged. J. Carrillo-Abad thanks the Generalitat Valenciana for granting a post-doctoral fellowship (APOSTD/2015/019). The authors are thankful to Dr. R. Buck (Chemours Co.) for kindly providing samples of Capstone FS10 es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Chemosphere es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject 6:2 FTSA es_ES
dc.subject BDD es_ES
dc.subject Electrolysis es_ES
dc.subject Perfluorinated alkyl substances es_ES
dc.subject PFHxA es_ES
dc.subject Fluorochemicals es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title BDD Anodic Treatment of 6:2 Fluorotelomer Sulfonate (6:2 FTSA).Evaluation of Operating Variables and By-Product Formation es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.chemosphere.2018.03.027 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//CTQ2015-71650-REDT/ES/APLICACIONES MEDIOAMBIENTALES Y ENERGETICAS DE LA TECNOLOGIA ELECTROQUIMICA/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//CTM2016-75509-R/ES/ESTRATEGIAS AVANZADAS DE INTEGRACION DE MEMBRANAS Y PROCESOS ELECTROCATALITICOS Y FOTOCATALITICOS PARA LA ELIMINACION DE CONTAMINANTES PERSISTENTES/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//APOSTD%2F2015%2F019/ es_ES
dc.rights.accessRights Cerrado es_ES
dc.description.bibliographicCitation Urtiaga, A.; Soriano, Á.; Carrillo Abad, J. (2018). BDD Anodic Treatment of 6:2 Fluorotelomer Sulfonate (6:2 FTSA).Evaluation of Operating Variables and By-Product Formation. Chemosphere. 201:571-577. https://doi.org/10.1016/j.chemosphere.2018.03.027 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.chemosphere.2018.03.027 es_ES
dc.description.upvformatpinicio 571 es_ES
dc.description.upvformatpfin 577 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 201 es_ES
dc.identifier.pmid 29533807 es_ES
dc.relation.pasarela S\355082 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder European Regional Development Fund es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
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