Artículo
Kinetics of the degradation of n-nutyl benzyl phthalate using O3/UV, direct photolysis, direct ozonation and UV effects
Fecha de publicación:
02/2015
Editorial:
Springer Heidelberg
Revista:
Environmental Science And Pollution Research
ISSN:
0944-1344
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The aim of this work is to study the degradation kinetics of the endocrine disruptor benzyl butyl phthalate using ozone and UV radiation. The model comprises four parallel subsystems that are identified and isolated: (1) direct photolysis, (2) direct ozonation in the absence of hydroxyl radicals, (3) complete ozonation (direct+indirect oxidation), and (4) ozone+UV. To determine the nature of ozone attacks and the influence of ·OH radicals on O3 activity, two sets of experiments were performed: (i) conventional ozonation and (ii) the same ozonation experiments in the presence of tertbutanol as radical scavenger, where only the reactions involving molecular ozone are present. The explored variables were (i) ozone concentration, (ii) incident radiation rate at the reactor windows, (iii) reaction pH, and (iv) the presence of radical scavengers. Major intermediates of BBP degradation were identified. Degradation kinetics was correctly modeled by a pseudo-second-order kinetic model based on the sum of all the effects occurring during the treatment. The corresponding kinetic constants were obtained, and the relative contributions of each of the considered subsystems were evaluated.
Palabras clave:
Ozone
,
Benzyl Butyl Phthalate
,
Uv Radiation
,
Kinetic
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Articulos(INTEC)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Citación
Lovato, Maria Eugenia; Gilliard, María Belén; Cassano, Alberto Enrique; Martin, Carlos Alberto; Kinetics of the degradation of n-nutyl benzyl phthalate using O3/UV, direct photolysis, direct ozonation and UV effects; Springer Heidelberg; Environmental Science And Pollution Research; 22; 2; 2-2015; 909-917
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