Application of soluble bio-organic substances (SBO) as photocatalysts for wastewater treatment: Sensitizing effect and photo-Fenton-like process

Soluble bio-organic substances (SBO) isolated from urban biorefuses have been investigated in photocatalytic processes for wastewater treatment using a cationic dye, namely crystal violet (CV) as target compound. The SBO have been found to enhance the photobleaching of CV solutions with an optimal S...

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Autores principales: Gomis, J., Vercher, Rosa F., Amat, Ana M., Mártire, Daniel Osvaldo, González, Mónica Cristina, Bianco Prevot, A., Montoneri, Enzo, Arques, Antonio, Carlos, Luciano
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Exactas
Química
Cationic dyes
Water treatment
Photo-Fenton
Organic biosurfactant
Waste valorization
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/128888
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-128888
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Cationic dyes
Water treatment
Photo-Fenton
Organic biosurfactant
Waste valorization
spellingShingle Ciencias Exactas
Química
Cationic dyes
Water treatment
Photo-Fenton
Organic biosurfactant
Waste valorization
Gomis, J.
Vercher, Rosa F.
Amat, Ana M.
Mártire, Daniel Osvaldo
González, Mónica Cristina
Bianco Prevot, A.
Montoneri, Enzo
Arques, Antonio
Carlos, Luciano
Application of soluble bio-organic substances (SBO) as photocatalysts for wastewater treatment: Sensitizing effect and photo-Fenton-like process
topic_facet Ciencias Exactas
Química
Cationic dyes
Water treatment
Photo-Fenton
Organic biosurfactant
Waste valorization
description Soluble bio-organic substances (SBO) isolated from urban biorefuses have been investigated in photocatalytic processes for wastewater treatment using a cationic dye, namely crystal violet (CV) as target compound. The SBO have been found to enhance the photobleaching of CV solutions with an optimal SBO concentration of ca. 20 mg L⁻¹. Mechanistic investigation based on chemical probes and changes in the absorption spectrum of CV in the presence of SBO seems to indicate that a complex formed between sensitizer and substrate plays a major role in the process. SBO have also been tested for the implementation of photo-Fenton processes at circumneutral media: the observed pseudo first order rate constants for CV decoloration was higher for UV/SBO/Fe(II)/H₂O₂ (5.5 × 10⁻³ min⁻¹) than for UV/Fe(II)/H₂O₂ (1.5 × 10⁻³ min⁻¹). A modified mechanism, in which HO· are less relevant that at the acidic medium, is in agreement with results of experiments carried out with chemical probes.
format Articulo
Articulo
author Gomis, J.
Vercher, Rosa F.
Amat, Ana M.
Mártire, Daniel Osvaldo
González, Mónica Cristina
Bianco Prevot, A.
Montoneri, Enzo
Arques, Antonio
Carlos, Luciano
author_facet Gomis, J.
Vercher, Rosa F.
Amat, Ana M.
Mártire, Daniel Osvaldo
González, Mónica Cristina
Bianco Prevot, A.
Montoneri, Enzo
Arques, Antonio
Carlos, Luciano
author_sort Gomis, J.
title Application of soluble bio-organic substances (SBO) as photocatalysts for wastewater treatment: Sensitizing effect and photo-Fenton-like process
title_short Application of soluble bio-organic substances (SBO) as photocatalysts for wastewater treatment: Sensitizing effect and photo-Fenton-like process
title_full Application of soluble bio-organic substances (SBO) as photocatalysts for wastewater treatment: Sensitizing effect and photo-Fenton-like process
title_fullStr Application of soluble bio-organic substances (SBO) as photocatalysts for wastewater treatment: Sensitizing effect and photo-Fenton-like process
title_full_unstemmed Application of soluble bio-organic substances (SBO) as photocatalysts for wastewater treatment: Sensitizing effect and photo-Fenton-like process
title_sort application of soluble bio-organic substances (sbo) as photocatalysts for wastewater treatment: sensitizing effect and photo-fenton-like process
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/128888
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