Publication
AplicaciĆ³n del proceso Fenton al tratamiento de aguas oleosas
| dc.contributor.author | Munoz, Macarena | |
| dc.contributor.author | DomĆnguez, Carmen M. | |
| dc.contributor.author | DĆaz de Tuesta, Jose Luis | |
| dc.contributor.author | Gomes, Helder | |
| dc.contributor.author | Casas, Jose A. | |
| dc.date.accessioned | 2020-01-14T11:51:49Z | |
| dc.date.available | 2020-01-14T11:51:49Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | En este trabajo se explora la viabilidad de procesos tipo Fenton, homogĆ©neo y heterogĆ©neo, para el tratamiento de contaminantes lipofĆlicos contenidos en aguas oleosas. Se ha seleccionado el colorante SudĆ”n IV como contaminante modelo y el ciclohexano como fase oleosa. Atendiendo al distinto coeficiente de reparto en el sistema bifĆ”sico agua-ciclohexano, se han seleccionado cuatro catalizadores basados en hierro; dos compuestos de hierro homogĆ©neos: una sal soluble en la fase acuosa y un complejo soluble en la fase orgĆ”nica, y dos catalizadores heterogĆ©neos: hierro soportado en carbĆ³n activo (localizado preferentemente en la fase orgĆ”nica) y magnetita natural (con afinidad por ambas fases y principalmente concentrado en la interfase). El estudio preliminar de los cuatro catalizadores en la descomposiciĆ³n de H2O2 (en ausencia de contaminante) revelĆ³ que los catalizadores homogĆ©neos son mĆ”s activos y, por tanto, presentan mayor potencial para ser utilizados en sistemas bifĆ”sicos. En presencia de estos materiales (10 mg L-1) se consiguen conversiones de contaminante superiores al 50% a las 24 h de reacciĆ³n, trabajando con la cantidad estequiomĆ©trica de oxidante. Los resultados obtenidos son prometedores y abren la puerta a la sĆntesis y aplicaciĆ³n de nuevos catalizadores homogĆ©neos adecuados para este tipo de sistemas. | pt_PT |
| dc.description.abstract | The viability of Fenton processes, homogeneous and heterogeneous, for the treatment of lipophilic pollutants contained in oily wastewaters (water-organic biphasic systems) is explored. Sudan IV and cyclohexane have been selected as model compound and oil phase, respectively. Four iron-based catalysts have been studied attending to their different coefficient of partition in the biphasic water-cyclohexane system; two soluble iron compounds: one soluble in water and the other in the organic phase, and two heterogeneous catalysts: iron supported in active carbon (preferably located in the organic phase) and magnetite (homogeneously located in both phases and preferably in the interface). Due to its characteristics, magnetite could be a promising catalyst in this system. However, a preliminary study in the decomposition of hydrogen peroxide (in the absence of pollutant) revealed that homogeneous catalysts were significantly more active. Therefore, the degradation of the dye was only carried out with these systems. In the presence of these materials (10 mg L-1) conversions of Sudan IV above 50% are obtained after 24 hours reaction time, working with the stoichiometric amount of oxidant. The obtained results are promising and open the door to the synthesis and application of new homogeneous catalysts suitable for this type of systems. | pt_PT |
| dc.description.sponsorship | Los autores agradecen la ayuda recibida del Ministerio de EconomĆa y Competitividad de EspaƱa (MINECO) a travĆ©s del proyecto CTM2016-76454-R, asĆ como a la ayuda recibida de la FundaĆ§Ć£o para a CiĆŖncia e a Tecnologia (FCT) y al Fondo Europeo de Desarrollo Regional (FEDER) a travĆ©s del proyecto āAIProcMat@N2020 - Advanced Industrial Processes and Materials for a Sustainable Northern Region of Portugal 2020ā, (NORTE-01-0145- FEDER-000006). Macarena Munoz agradece al MINECO la concesiĆ³n de su contrato RamĆ³n y Cajal (RYC-2016-20648). | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Munoz M., DomĆnguez C.M., DĆaz de Tuesta J.L., Gomes H.T., Casas J.A. (2018). AplicaciĆ³n del proceso Fenton al tratamiento de aguas oleosas. In XXVI Congresso Ibero-Americano de CatĆ”lise: livro de atas. Coimbra, p. 695-700. ISBN 978-989-8124-23-4 | pt_PT |
| dc.identifier.isbn | 978-989-8124-23-4 | |
| dc.identifier.uri | http://hdl.handle.net/10198/20353 | |
| dc.language.iso | spa | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | pt_PT |
| dc.subject | Proceso Fenton | pt_PT |
| dc.subject | Ćguas residuales oleosas | pt_PT |
| dc.subject | SudƔn IV | pt_PT |
| dc.subject | Contaminante lipofĆlico | pt_PT |
| dc.subject | SIstema bifƔsico | pt_PT |
| dc.title | AplicaciĆ³n del proceso Fenton al tratamiento de aguas oleosas | pt_PT |
| dc.type | conference object | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Coimbra, Portugal | pt_PT |
| oaire.citation.endPage | 700 | pt_PT |
| oaire.citation.startPage | 695 | pt_PT |
| oaire.citation.title | CICat 2018 - XXVI Congresso Ibero-Americano de CatƔlise | pt_PT |
| person.familyName | DĆaz de Tuesta | |
| person.familyName | Gomes | |
| person.givenName | Jose Luis | |
| person.givenName | Helder | |
| person.identifier.ciencia-id | 7A1F-022B-7DBF | |
| person.identifier.ciencia-id | 6218-1E19-13EE | |
| person.identifier.orcid | 0000-0003-2408-087X | |
| person.identifier.orcid | 0000-0001-6898-2408 | |
| person.identifier.rid | D-9785-2017 | |
| person.identifier.scopus-author-id | 55755821600 | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | conferenceObject | pt_PT |
| relation.isAuthorOfPublication | 2ad0465f-5f8a-4b14-90f5-bf85996f9ce1 | |
| relation.isAuthorOfPublication | 0eb96337-224a-4339-9918-334436fbbb99 | |
| relation.isAuthorOfPublication.latestForDiscovery | 2ad0465f-5f8a-4b14-90f5-bf85996f9ce1 |