Iron(III) photoxidation of organic compounds in aqueous solutions

Rodríguez, Ma Paloma González; Abderrazik, N. Ben; Contreras, Sandra; Chamarro, Esther; Giménez, Jaime; Esplugas, Santiago

doi:10.1016/s0926-3373(01)00333-2

Cited by 59 publications

(28 citation statements)

References 22 publications

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“…Since the degradation of nitrobenzene is very difficult to achieve, severe conditions were needed for its oxidation such as supercritical water oxidation (Arslan-Alaton and Ferry, 2002;Zhang and Hua, 2003). Other advanced oxidation processes like photocatalytic oxidation (Makarova et al, 2000;Rodriguez et al, 2002), sonolysis/ozonolysis (Weavers et al, 1998), ozonation and O 3 /UV processes (Contreras et al, 2001), Fenton oxidation have been investigated for the same purpose. However, these methods are either expensive or ineffective for the treatment of nitrobenzene-containing wastewaters.…”

Section: Introductionmentioning

confidence: 99%

Wet air oxidation of nitrobenzene enhanced by phenol

Fu¹,

Chen²,

Liang³

2005

Chemosphere

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Section: Introductionmentioning

confidence: 99%

Wet air oxidation of nitrobenzene enhanced by phenol

Fu¹,

Chen²,

Liang³

2005

Chemosphere

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“…When applied to the degradation of pollutants, these reactions are usually termed advanced oxidation technologies (AOT) [10,11]. The common AOT use low to moderate concentrations of inexpensive, environmentally compatible chemical reagents and, in favorable cases, lead to the complete oxidation of organic pollutants into carbon dioxide, water, and inorganic compounds of all heteroatoms other than oxygen.…”

Section: Introductionmentioning

confidence: 99%

Photo‐Fenton Remediation of Wastewaters Containing Silicones: Experimental Study and Neural Network Modeling

Teixeira

Guardani

Nascimento³

2004

Chem Eng & Technol

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The present work is aimed at the investigation of the photo-Fenton technology with regard to the remediation of diluted aqueous emulsions containing an aminosilicone polymer, in a bench-scale photochemical reactor. The experimental results show a strong interaction between temperature, light, Fe(II) and H 2 O 2 concentrations on the degradation process, which generates substances that might be readily biodegradable and/or a solid phase that is easily separated by simple mechanical operations. The neural network technique is an effective, simple approach to successfully modeling the photo-Fenton degradation system, in which thermal and photochemical reactions and related phenomena (such as solid precipitation) take place. The model might therefore be useful in process optimization, as well as in the design and scaleup of photochemical reactors for industrial application.

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“…It was interesting to find that the synergistic technology of the heterogeneous photo-Fenton system was more favourable for the degradation of BPA, and more than 50% of BPA was decomposed after 60 min irradiation at pH 4.3. These results can be explained by the fact that the presence of UV radiation increased the amount of the hydroxyl radical produced by the photoreduction reaction of Fe(III) (Reaction (1)) [37][38][39] and the decomposition of hydrogen peroxide (Reaction(2)). [28,40] Fe…”

Section: Characterization Of Fe-y Molecular Sieve Catalystmentioning

confidence: 99%

Degradation of bisphenol A in water by the heterogeneous photo-Fenton

Jiang

Guo

et al. 2013

Environmental Technology

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Bisphenol A (BPA) is a kind of a controversial endocrine disruptor, and is ubiquitous in environment. The degradation of BPA with the heterogeneous photo-Fenton system was demonstrated in this study. The Fe-Y molecular sieve catalyst was prepared with the ion exchange method, and it was characterized by X-ray radiation diffraction (XRD). The effects of pH, initial concentration of H 2 O 2 , initial BPA concentration, and irradiation intensity on the degradation of BPA were investigated. The service life and iron solubility of catalyst were also tested. XRD test shows that the major phase of the Fe-Y catalyst was Fe 2 O 3 . The method of heterogeneous photo-Fenton with Fe-Y catalyst was superior to photolysis, photo-oxidation with only hydrogen, heterogeneous Fenton, and homogeneous photo-Fenton approaches. pH value had no obvious effects on BPA degradation over the range of 2.2-7.2. The initial concentration of H 2 O 2 had an optimal value of 20 × 10 −4 mol/L. The decrease in initial concentration of BPA was favourable for degradation. The intensity of ultraviolet irradiation has no obvious effect on the BPA removal. The stability tests indicated that the Fe-Y catalyst can be reused and iron solubility concentration ranged from NA to 0.0062 mg/L. Based on the results, the heterogeneous photo-Fenton treatment is the available method for the degradation of BPA.

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Iron(III) photoxidation of organic compounds in aqueous solutions

Cited by 59 publications

References 22 publications

Wet air oxidation of nitrobenzene enhanced by phenol

Wet air oxidation of nitrobenzene enhanced by phenol

Photo‐Fenton Remediation of Wastewaters Containing Silicones: Experimental Study and Neural Network Modeling

Degradation of bisphenol A in water by the heterogeneous photo-Fenton

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