Catalytic Studies For The Abatement Of Emerging Contaminants By Ozonation

dc.creatorMartins
dc.creatorRui C.; Cardoso
dc.creatorMafalda; Dantas
dc.creatorRenato F.; Sans
dc.creatorCarmen; Esplugas
dc.creatorSantiago; Quinta-Ferreira
dc.creatorRosa M.
dc.date2015-SEP
dc.date2016-06-07T13:20:54Z
dc.date2016-06-07T13:20:54Z
dc.date.accessioned2018-03-29T01:40:51Z
dc.date.available2018-03-29T01:40:51Z
dc.identifier
dc.identifierCatalytic Studies For The Abatement Of Emerging Contaminants By Ozonation. Wiley-blackwell, v. 90, p. 1611-1618 SEP-2015.
dc.identifier0268-2575
dc.identifierWOS:000358611600009
dc.identifier10.1002/jctb.4711
dc.identifierhttp://onlinelibrary.wiley.com/doi/10.1002/jctb.4711/full
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/242978
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1306676
dc.descriptionBACKGROUNDPharmaceutical industry generates a large amount of liquid effluents rich in toxic compounds that reach natural water streams, if improperly degraded, being a threat for ecosystems. In this context, ozonation appears as an interesting alternative to conventional treatments. This work aims to study the effect of this technology aided by two ceramic catalysts (the laboratory Mn-Ce-O and the commercial N-150) on the degradation of a mixture of two contaminants: sulfamethoxazole and diclofenac. RESULTS: The presence of the catalysts had no significant impact on pharmaceuticals removal when compared with single ozonation. However, both materials increased the amount of COD removed per mg of ozone applied (0.10 mgCOD(removed) mg(-1)O(3) and 0.067 mgCOD(removed) mg(-1)O(3) for catalytic and single ozonation, respectively). The performance of Mn-Ce-O was very dependent upon the solution pH whereas no significant pH impact was detected for N-150. The generalized kinetic model (GKM) was able to satisfactorily describe the lumped kinetic mechanism concerning COD abatement. Moreover, no differences in the degradation results were observed for the Mn-Ce-O system when comparing two types of waters (ultrapure and natural) used to dissolve the pharmaceutical compounds. Importantly, the presence of the solid catalyst improved ozone usage and reduced the effluents' toxicity. CONCLUSIONAlthough work has been published regarding the removal of single emerging contaminants, the analysis of mixtures is not so frequent. The use of Mn-Ce-O truly enhances COD degradation revealing its potential as heterogeneous catalytic material to improve ozone action on pollutants. (c) 2015 Society of Chemical Industry
dc.description90
dc.description9
dc.description
dc.description1611
dc.description1618
dc.description
dc.description
dc.description
dc.languageen
dc.publisherWILEY-BLACKWELL
dc.publisher
dc.publisherHOBOKEN
dc.relationJOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
dc.rightsfechado
dc.sourceWOS
dc.subjectPharmaceutical Waste-water
dc.subjectActivated Carbon
dc.subjectHumic Acids
dc.subjectOzone
dc.subjectSulfamethoxazole
dc.subjectOxidation
dc.subjectToxicity
dc.subjectDegradation
dc.subjectEffluents
dc.subjectRemoval
dc.titleCatalytic Studies For The Abatement Of Emerging Contaminants By Ozonation
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución