Photo-Fenton oxidation and mineralization of methyl orange using Fe-sand as effective heterogeneous catalyst

Omri, Abdessalem; Hamza, Wiem; Benzina, Mourad

doi:10.1016/j.jphotochem.2020.112444

Cited by 33 publications

(14 citation statements)

References 76 publications

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“…The treatment of methyl orange with the coupling WO 3 -H 2 O/H 2 O 2 showed that the absorption peak from the azo bond decreased considerably, while the absorption at 298 nm from the benzene nucleus increase drastically and shifted to 288 nm, indicating that degradation intermediates containing the benzene ring were generated. These results are consistent with the work reported in previous literature (Chen et al, 2015;Omri et al, 2020).…”

Section: Catalytic Activitysupporting

confidence: 94%

Catalytic activity of using tungsten oxide with hydrogen peroxide for methyl orange degradation

Eroi¹,

Ello²,

Diabaté³

et al. 2020

Afr. J. Pure Appl. Chem.

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In this work, a tungsten oxide nanoparticle was developed with a simple method, using tungsten powder. The orthorhombic, hexagonal and monoclinic crystalline structures obtained were characterized by X-ray diffraction, scanning electron microscopy, as well as Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The coupling of these tungsten oxide nano particles with hydrogen peroxide is carried out on methyl orange removal from wastewater. The use of Hydrated orthorhombic particles showed the highest removal rate up to 89.7% comparatively to hexagonal and monoclinic crystalline structures respectively. The reusability of these particles showed a good stability with monoclinic crystalline structure after four cycles.

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Section: Catalytic Activitysupporting

confidence: 94%

Catalytic activity of using tungsten oxide with hydrogen peroxide for methyl orange degradation

Eroi¹,

Ello²,

Diabaté³

et al. 2020

Afr. J. Pure Appl. Chem.

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“…In contrast, the absorption at λ = 316 nm of the benzene ring increases considerably and has shifted to λ = 300 nm, indicating that degradation intermediates containing a benzene ring have been generated. These results are in agreement with the work reported in the literature [23][24]. Similar results were obtained during the degradation of remazol black by the photo Fenton process [15,25].…”

Section: Evolution Curve Of the Degradation Of Remazol Black As A Function Of The Catalystsupporting

confidence: 93%

Degradation of Remazol Black dye from Aqueous Solution by Heterogeneous NH3(MoO3)3/H2O2 System

Urbain¹,

Ollo²,

Paul

et al. 2021

IRJPAC

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Aims: The pollution of the environment by organic dyes in water is a matter of great concern. Wastewater containing dyes is difficult to treat by conventional wastewater treatment methods such as coagulation, ozonation, biological treatment, etc. This is why the implementation of an effective method by not generating pollutants secondary is necessary. The objective of this work is to study the degradation of remazol black, an azo dye, by the coupling of hydrogen peroxide - molybdenum oxide nanoparticle. The nanoparticles were synthesized by the aqueous sol-gel method using a reflux assembly. Study Design: Random design. Methodology: The nanoparticles were synthesized by the aqueous sol-gel method using a reflux assembly and then characterized by X-ray diffraction and using software origin to determine the particles size by Scherrer's formula. The influence of hydrogen peroxide, molybdenum oxide and hydrogen peroxide / molybdenum oxide coupling, and the degradation kinetics of remazol black were studied. We also studied the influence of the pH of the solution, the mass of molybdenum nanoparticles and the concentration of remazol black on the dye degradation process. Results: The results showed that the synthesized oxide is ammonium molybdenum trioxide NH3(MoO3)3) with a hexagonal structure and size 22.79 nm. The study of the catalytic effect revealed a degradation rate of 17%, 0.83% and 42% respectively for H2O2, NH3(MoO3)3 and the coupling NH3(MoO3)3/H2O2. The study also showed that the degradation of remazol black by the couple NH3(MoO3)3 /H2O2 is better at pH = 4 and for a mass of nanoparticles of 400 mg. This degradation kinetics are pseudo 1st order. In addition, the degradation rate decreases when the concentration of remazol black increases. The efficiency of the coupling (NH3(MoO3)3 / H2O2 showed at ambient temperature, that it was possible to remove about 60% of the initial color of remazol black from the water in a batch reaction. Conclusion: The reflux method makes it possible to synthesize molybdenum nanoparticles. The molybdenum oxide hetero-Fenton process is effective in removing remazol black dye from water.

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“…1 Reaction system for the photocatalytic degradation tests properties of some iron oxides; in this way, the percentage of iron oxides increases until 50% in the MF, and decreases to 41% in the NMF; while the Titanium Oxide represents 45% of the and 50% of the MF and NMF, respectively; such values are in the order of the TiO 2 contents observed in TO worldwide (30-60 mass%), which have been classified as low-grade titanium oxide sources [45]. TiO 2 and iron oxides are used for their photo activity in oxidation systems [17,46], which allows speculating about the feasibility of the MF of TO and their fractions as heterogeneous photo catalysts; moreover, the contents of TiO 2 and Fe 2 O 3 are higher than the values reported for a Colombian [35] and a Tunisian black sands [47], whose were successfully applied on the degradation of organic pollutants.…”

Section: Physicochemical Characterization Of To Samplesmentioning

confidence: 97%

Assessment of the Use of NaClO as an Alternative to H2O2 in the Oxidant-Titanium Ore-Simulated Solar Light System for Thiabendazole Degradation

et al. 2020

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The use of the magnetic fraction (MF) of a low-grade titanium ore (TO) and two oxidants (H 2 O 2 and NaClO), testing each one separately, were compared in photo-Fenton like systems to degrade thiabendazole (TBZ) as a model micropollutant. As far as the author's knowledge goes, this work presents for the first time the assessment of NaClO as an alternative to H 2 O 2 in heterogeneous systems, where the Fenton-type photocatalyst is a natural mineral; TO has a Mexican origin and its magnetic fraction is mainly composed of Ilmenite (47.8% w/w FeTiO 3 ). The experiments were carried out at bench scale in a solar simulator, using a batch raceway pond reactor. Oxidant and MF concentrations were optimized by a composite experimental design, which allowed to achieve 97% TBZ degradation at 15 and 30 min for NaClO and H 2 O 2 systems, respectively, when the initial concentration of TBZ was 37 µM. Pointing out that both pseudo-first order rate constants ( k ′ ),are in the order of homogeneous photo-Fenton applied to degrade TBZ; however, the time to achieve the same level of TBZ degradation is halved when NaClO is used instead of H 2 O 2 , thus the capacity of treatment plants can be increased. Furthermore, better results of mineralization (54%), DQO (76%), DBO 5 (44%) and acute toxicity (74%) removal were observed when NaClO was used as an oxidant compared to H 2 O 2 , whose values were 42, 67, 38 and 58% for the parameters aforementioned. These positive results demonstrate the feasibility of the use of NaClO as an alternative oxidant to H 2 O 2 in the heterogeneous photo Fenton like process.

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Photo-Fenton oxidation and mineralization of methyl orange using Fe-sand as effective heterogeneous catalyst

Cited by 33 publications

References 76 publications

Catalytic activity of using tungsten oxide with hydrogen peroxide for methyl orange degradation

Catalytic activity of using tungsten oxide with hydrogen peroxide for methyl orange degradation

Degradation of Remazol Black dye from Aqueous Solution by Heterogeneous NH3(MoO3)3/H2O2 System

Assessment of the Use of NaClO as an Alternative to H2O2 in the Oxidant-Titanium Ore-Simulated Solar Light System for Thiabendazole Degradation

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