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dc.contributor.author
Costante, Mariana Rosana  
dc.contributor.author
Garcia Einschlag, Fernando Sebastian  
dc.date.available
2023-09-04T19:22:04Z  
dc.date.issued
2022-11  
dc.identifier.citation
Costante, Mariana Rosana; Garcia Einschlag, Fernando Sebastian; Assessment of key processes that govern the degradation of mixtures in photo-Fenton systems; Elsevier Science SA; Journal of Photochemistry and Photobiology A: Chemistry; 432; 11-2022; 1-12  
dc.identifier.issn
1010-6030  
dc.identifier.uri
http://hdl.handle.net/11336/210456  
dc.description.abstract
This work focuses on the use of the photo-Fenton process for the treatment of dye mixtures with different compositions. The statistical design of experiments for mixtures and the response surface methodology were used to assess the effect of the dye proportions on both the discoloration rates and the mineralization efficiency. The initial concentrations of catalyst and oxidant, as well as the temperature and the initial pH, were kept constant for all tests. The discoloration rates were followed in terms of the UV–vis absorption spectra evolution, whereas the mineralization efficiencies were assessed by analyzing the decrease of total organic carbon and the consumption of H2O2. The treatment times required for a discoloration of 50% were fitted to a quadratic model (R2 = 0.9347). In addition, within the tested experimental domain, mineralization degrees of at least 80% were achieved after 180 min under all conditions. The analysis of the involved processes shows that the shape of the obtained response surface may be explained by taking into account three key factors: (i) the relative contributions of the internal filter effects, (ii) the inactivation of the catalyst due to the formation of relatively inert coordination complexes with some of the target pollutants, and (iii) the in situ formation of intermediate organic species that can reduce Fe(III) and enhance the catalyst activity.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science SA  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
AUTOCATALYSIS  
dc.subject
COMPLEXATION  
dc.subject
DYE MIXTURES  
dc.subject
INNER FILTER EFFECTS  
dc.subject
PHOTO-FENTON  
dc.subject.classification
Otras Ciencias Químicas  
dc.subject.classification
Ciencias Químicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Assessment of key processes that govern the degradation of mixtures in photo-Fenton systems  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-07-07T18:39:22Z  
dc.journal.volume
432  
dc.journal.pagination
1-12  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Costante, Mariana Rosana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina  
dc.description.fil
Fil: Garcia Einschlag, Fernando Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina  
dc.journal.title
Journal of Photochemistry and Photobiology A: Chemistry  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1010603022003215  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jphotochem.2022.114096