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No. de sistema: 000033106

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 181217m20199999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
044 _ _ a| xx
245 0 0 a| Photo-assisted electrochemical degradation of polychlorinated biphenyls with boron-doped diamond electrodes
506 _ _ a| Disponible para usuarios de ECOSUR con su clave de acceso
520 1 _ a| The capacity of the photo electro-Fenton (PEF) process to degrade a mixture of seven polychlorinated biphenyl (PCB) congeners was studied. Boron-doped diamond (BDD) sheets were used as anode and cathode in the experimental electrolytic cell that contained Na2SO4 0.05 M at pH 3 as supporting electrolyte for the electro generation of H2O2 at the cathode. The effects of UV light intensity (254 and 365 nm), current density (8, 16 and 24 mA cm−²) and ferrous ion dosage (0.1, 0.2 and 0.3 mM) on PCB (C0 = 50 μg L−¹) degradation were evaluated. The highest level of PCB degradation (97%) was achieved with 16 mA cm−² of current density, 0.1 mM of ferrous ion and UV light at 365 nm as irradiation source after 6 h of reaction. PCB28, PCB52 and PCB101 were not detected after 0.5, 1.5 and 3 h of reaction, respectively. The degradation of PCB138, PCB153, PCB180 and PCB209 was also high (>95%). The PEF system outperformed other oxidation processes (electro-Fenton, anodic oxidation, Fenton, photo-Fenton and UV photolysis) in terms of reaction rate and degradation efficiency. These results demonstrate for the first time the degradation of PCB209, the most highly chlorinated PCB congener, by an advanced electrochemical oxidation process.
533 _ _ a| Reproducción electrónica en formato PDF
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Bifenilos policlorados
650 _ 4 a| Contaminantes orgánicos persistentes
650 _ 4 a| Procesos avanzados de oxidación
650 _ 4 a| Sistema fotoelectro fenton
700 1 _ a| Gutiérrez Hernández, Rubén Fernando
700 1 _ a| Bello Mendoza, Ricardo
e| coaut.
700 1 _ a| Hernández Ramírez, A.
e| coaut.
700 1 _ a| Malo Rivera, Edi Álvaro
c| Doctor
e| coaut.
700 1 _ a| Nájera Aguilar, Hugo Alejandro
e| coaut.
773 0 _
t| Environmental Technology
g| Vol. 40, no. 1 (2019), p. 1-10
x| 0959-3330
900 _ _ a| Solicítelo con su bibliotecario/a
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Diciembre 2018
905 _ _ a| Artecosur
905 _ _ a| Desastres
LNG eng
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*Solicítelo con su bibliotecario/a
Photo-assisted electrochemical degradation of polychlorinated biphenyls with boron-doped diamond electrodes
Gutiérrez Hernández, Rubén Fernando (autor)
Bello Mendoza, Ricardo (autor)
Hernández Ramírez, A. (autor)
Malo Rivera, Edi Álvaro (autor)
Nájera Aguilar, Hugo Alejandro (autor)
Nota: Disponible para usuarios de ECOSUR con su clave de acceso
Contenido en: Environmental Technology. Vol. 40, no. 1 (2019), p. 1-10. ISSN: 0959-3330
No. de sistema: 33106
Tipo: - Artículo con arbitraje
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"The capacity of the photo electro-Fenton (PEF) process to degrade a mixture of seven polychlorinated biphenyl (PCB) congeners was studied. Boron-doped diamond (BDD) sheets were used as anode and cathode in the experimental electrolytic cell that contained Na2SO4 0.05 M at pH 3 as supporting electrolyte for the electro generation of H2O2 at the cathode. The effects of UV light intensity (254 and 365 nm), current density (8, 16 and 24 mA cm−²) and ferrous ion dosage (0.1, 0.2 and 0.3 mM) on PCB (C0 = 50 μg L−¹) degradation were evaluated. The highest level of PCB degradation (97%) was achieved with 16 mA cm−² of current density, 0.1 mM of ferrous ion and UV light at 365 nm as irradiation source after 6 h of reaction. PCB28, PCB52 and PCB101 were not detected after 0.5, 1.5 and 3 h of reaction, respectively. The degradation of PCB138, PCB153, PCB180 and PCB209 was also high (>95%). The PEF system outperformed other oxidation processes (electro-Fenton, anodic oxidation, Fenton, photo-Fenton and UV photolysis) in terms of reaction rate and degradation efficiency. These results demonstrate for the first time the degradation of PCB209, the most highly chlorinated PCB congener, by an advanced electrochemical oxidation process."


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