Coupling of solar photoelectro-Fenton with a BDD anode and solar heterogeneous photocatalysis for the mineralization of the herbicide atrazine.
Chemosphere
; 97: 26-33, 2014 Feb.
Article
em En
| MEDLINE
| ID: mdl-24231044
Here, the synergetic effect of coupling solar photoelectro-Fenton (SPEF) and solar heterogeneous photocatalysis (SPC) on the mineralization of 200mL of a 20mg L(-1) atrazine solution, prepared from the commercial herbicide Gesaprim, at pH 3.0 was studied. Uniform, homogeneous and adherent anatase-TiO2 films onto glass spheres of 5mm diameter were prepared by the sol-gel dip-coating method and used as catalyst for SPC. However, this procedure yielded a poor removal of the substrate because of the low oxidation ability of positive holes and OH formed at the catalyst surface to destroy it. Atrazine decay was improved using anodic oxidation (AO), electro-Fenton (EF), SPEF and coupled SPEF-SPC at 100mA. The electrolytic cell contained a boron-doped diamond (BDD) anode and H2O2 was generated at a BDD cathode fed with an air flow. The removal and mineralization of atrazine increased when more oxidizing agents were generated in the sequence AO
AssuntosPalavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Atrazina
/
Processos Fotoquímicos
/
Herbicidas
Idioma:
En
Revista:
Chemosphere
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Reino Unido
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Atrazina
/
Processos Fotoquímicos
/
Herbicidas
Idioma:
En
Revista:
Chemosphere
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Reino Unido