Effect of simulated solar light on the autocatalytic degradation of nitrobenzene using Fe⁺³ and hydrogen peroxide

The effect of simulated solar light on nitrobenzene degradation in Fe⁺³ /H₂ O₂ solutions was investigated under different experimental conditions. Consumption profiles of NBE and H₂ O₂ display an autocatalytic kinetic behavior for both dark and photo-assisted degradation experiments. The rates of th...

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Autores principales: Carlos, Luciano, Fabbri, Debora, Capparelli, Alberto Luis, Bianco Prevot, Alessandra, Pramauro, Edmondo, García Einschlag, Fernando Sebastián
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2009
Materias:
Química
Photo-Fenton
Solarbox
Nitroaromatic
Autocatalysis
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/127903
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-127903
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Photo-Fenton
Solarbox
Nitroaromatic
Autocatalysis
spellingShingle Química
Photo-Fenton
Solarbox
Nitroaromatic
Autocatalysis
Carlos, Luciano
Fabbri, Debora
Capparelli, Alberto Luis
Bianco Prevot, Alessandra
Pramauro, Edmondo
García Einschlag, Fernando Sebastián
Effect of simulated solar light on the autocatalytic degradation of nitrobenzene using Fe⁺³ and hydrogen peroxide
topic_facet Química
Photo-Fenton
Solarbox
Nitroaromatic
Autocatalysis
description The effect of simulated solar light on nitrobenzene degradation in Fe⁺³ /H₂ O₂ solutions was investigated under different experimental conditions. Consumption profiles of NBE and H₂ O₂ display an autocatalytic kinetic behavior for both dark and photo-assisted degradation experiments. The rates of the initial slow phase that precedes the catalytic phase are significantly enhanced by irradiation, although the effect of simulated solar light on the rates of the fast phase is negligible. The absolute rates of the slow phase increase with the concentrations of Fe⁺³ and H₂ O₂ , whereas the initial rate of the degree of conversion increase decreases with organic matter loading. The reaction progress was characterized by HPLC, GC–MS, IC, TOC (total organic carbon) and toxicity analyses. The main products detected were 4-nitrophenol, 3-nitrophenol, 2-nitrophenol, 1,3-dinitrobenzene, phenol, oxalic acid, formic acid, NO₂ − and NO₃ − . Product distribution profiles are discussed in connection with TOC and toxicity measurements. The results show that dark treatment is neither capable of lowering the organic content nor capable of reducing the effluent toxicity to acceptable levels. On the other hand, photo-assisted processes induced by simulated solar light can significantly enhance both mineralization and detoxification efficiencies.
format Articulo
Preprint
author Carlos, Luciano
Fabbri, Debora
Capparelli, Alberto Luis
Bianco Prevot, Alessandra
Pramauro, Edmondo
García Einschlag, Fernando Sebastián
author_facet Carlos, Luciano
Fabbri, Debora
Capparelli, Alberto Luis
Bianco Prevot, Alessandra
Pramauro, Edmondo
García Einschlag, Fernando Sebastián
author_sort Carlos, Luciano
title Effect of simulated solar light on the autocatalytic degradation of nitrobenzene using Fe⁺³ and hydrogen peroxide
title_short Effect of simulated solar light on the autocatalytic degradation of nitrobenzene using Fe⁺³ and hydrogen peroxide
title_full Effect of simulated solar light on the autocatalytic degradation of nitrobenzene using Fe⁺³ and hydrogen peroxide
title_fullStr Effect of simulated solar light on the autocatalytic degradation of nitrobenzene using Fe⁺³ and hydrogen peroxide
title_full_unstemmed Effect of simulated solar light on the autocatalytic degradation of nitrobenzene using Fe⁺³ and hydrogen peroxide
title_sort effect of simulated solar light on the autocatalytic degradation of nitrobenzene using fe⁺³ and hydrogen peroxide
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/127903
work_keys_str_mv AT carlosluciano effectofsimulatedsolarlightontheautocatalyticdegradationofnitrobenzeneusingfe3andhydrogenperoxide
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bdutipo_str Repositorios
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