Artículo
Modeling of degradation kinetic and toxicity evaluation of herbicides mixtures in water using the UV/H2O2 process.
Fecha de publicación:
01/2015
Editorial:
Royal Society Of Chemistry
Revista:
Photochemical And Photobiological Sciences
ISSN:
1474-905X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The UV/H2O2 process was applied to the treatment of different mixtures of herbicides in water. Glyphosate, the herbicide most used in the world, was mixed with other hormonal herbicides with residual activity as 2,4-D and dicamba. The main goals of the study were to develop a kinetic model for interpreting the simultaneous oxidation of two mixtures (glyphosate plus 2,4-D and glyphosate plus dicamba). The model is based on a complete reaction mechanism, which comprises hydrogen peroxide photolysis and decomposition of both herbicides in each mixture studied. It takes into account the effect of nonuniform distribution of the local rate of absorbed photons. Good agreement of experimental data and the model is achieved in spite of differences in the reactivity between glyphosate and 2,4-D (or dicamba). Toxicity assays (employing Vibrio fischeri) were also performed, indicating that the toxicity of the mixture of glyphosate and 2,4-D was significantly reduced after the treatment.
Palabras clave:
Modeling
,
Pesticides
,
Glyphosate
,
Uv/H2o2
Archivos asociados
Licencia
Identificadores
Colecciones
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
Mariani, Melisa Lourdes; Romero, Roberto Leopoldo; Zalazar, Cristina Susana; Modeling of degradation kinetic and toxicity evaluation of herbicides mixtures in water using the UV/H2O2 process.; Royal Society Of Chemistry; Photochemical And Photobiological Sciences; 14; 1-2015; 608-617
Compartir
Altmétricas