Investigating the Influence of Light Source and Natural Antioxidants on Food Dye Degradation Rate by Fenton Reaction

Abstract Pulsed light (PL) is a type of photonic technology characterized by intense short light pulses that enhance the speed of photochemical reactions, and which might be useful as light source in advanced oxidation processes. This work aimed to test PL as light source for the degradation of the dye malachite green (MG) by combining PL with H2O2. To this end, the effect of dye and H2O2 concentrations and pH on the degradation rate of MG was studied and a degradation pathway was proposed. Dye degradation followed a pseudo-first order kinetics; it increased with low initial dye concentration, high H2O2 concentration and low pH. Complete decolourization was achieved after 35 light pulses (75 J/cm2), with a degradation rate of 0.0710 cm2/J. The degradation was initiated by the attack of hydroxyl radicals to the central carbon of MG generating 4-(dimethylamino)benzophenone (DLBP) followed by the addition of hydroxyl radicals to the non-amino aromatic ring of DLBP and the demethylation of the amino group. Results indicate that PL technology has potential to be implemented to decrease the environmental impact of dyeing industries.

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

International Research Journal of Pure and Applied Chemistry ◽

10.9734/irjpac/2021/v22i730421 ◽

2021 ◽

pp. 67-78

Author(s):

Kouakou Yao Urbain ◽

Kambiré Ollo ◽

Gnonsoro Urbain Paul ◽

Eroi N’goran Sévérin ◽

Trokourey Albert

Keyword(s):

Hydrogen Peroxide ◽

Molybdenum Oxide ◽

Degradation Rate ◽

Dye Degradation ◽

Degradation Kinetics ◽

Sol Gel ◽

Gel Method ◽

Sol Gel Method ◽

Molybdenum Nanoparticles ◽

Remazol Black

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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Effect of thermal treatment on the catalytic activity of a Fe-rich bentonite for the photo-Fenton reaction

Cerâmica ◽

10.1590/0366-69132019653732521 ◽

2019 ◽

Vol 65 (373) ◽

pp. 147-152 ◽

Cited By ~ 2

Author(s):

B. M. Zimmermann ◽

S. Silvestri ◽

J. Leichtweis ◽

G. L. Dotto ◽

E. S. Mallmann ◽

...

Keyword(s):

Aqueous Solution ◽

Rhodamine B ◽

Fenton Reaction ◽

Dye Degradation ◽

Mesoporous Structure ◽

Iron Leaching ◽

Visible Irradiation ◽

Reaction Cycles ◽

Adsorption Desorption ◽

Thermally Treated

Abstract The objective of this work was to evaluate the degradation of rhodamine B dye from aqueous solution by photo-Fenton reaction under visible irradiation using a Fe-rich bentonite as a catalyst. The material was thermally treated at a low temperature (200 °C) and characterized by XRD, N2 adsorption-desorption isotherms, FTIR, SEM-EDS and XRF. Iron leaching in aqueous solution after the photo-Fenton reaction was evaluated by atomic absorption spectroscopy. The material exhibited a mesoporous structure, containing a specific surface area of 99 m2.g-1. The catalytic results showed significant dye degradation, reaching 95% of decolorization and 72% of mineralization at 300 min of reaction. The catalyst showed high chemical stability in four reaction cycles. Therefore, this thermally treated Fe-rich bentonite can be considered as a promising catalyst in the heterogeneous photo-Fenton reaction for the degradation of rhodamine B from aqueous solution.

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Degradation of Reactive Red K-2G by a Photoassisted Fenton Reaction Using a Novel Loading Phthalocyanine Sulfonic Iron Fibers as a Catalyst

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.175-176.712 ◽

2011 ◽

Vol 175-176 ◽

pp. 712-716

Author(s):

Hai Ning Lv ◽

Li Ping Xu ◽

Cheng Qian

Keyword(s):

Fenton Reaction ◽

Ph Value ◽

Dye Degradation ◽

Reactive Dyes ◽

Cellulose Fibers ◽

Catalyst Loading ◽

Solution Ph ◽

Catalyst Dosage ◽

Silk Fabrics ◽

Modified Cellulose

Reactive dyes have been widely used in the dyeing of bright colourful silk fabrics. The discoloration and degradation of Reactive Red K-2G in waste water were discussed in this paper. A new heterogeneous photocatalyst named loading phthalocyanine sulfonic iron fibers (FePcS-F) was prepared by phthalocyanine sulfonic Iron supported by modified cellulose fibers in acidic condition. The photocatalytic degradation of Reactive Red K-2G was characterized by discoloration rate to evaluate the effect of catalyst dosage, catalyst loading (CFePcS-F) and solution pH. The results proved that increasing catalyst dosage and CFePcS-F significantly accelerated the dye degradation. FePcS-F catalyst showed higher photocatalytic activity when the solution’s pH value is equal to or less than 6.0, compared to alkaline medium.

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Coupling cathodic Electro-Fenton reaction to membrane filtration for AO7 dye degradation: A successful feasibility study

Journal of Membrane Science ◽

10.1016/j.memsci.2016.02.071 ◽

2016 ◽

Vol 510 ◽

pp. 182-190 ◽

Cited By ~ 30

Author(s):

Peiying Liang ◽

Matthieu Rivallin ◽

Sophie Cerneaux ◽

Stella Lacour ◽

Eddy Petit ◽

...

Keyword(s):

Feasibility Study ◽

Fenton Reaction ◽

Membrane Filtration ◽

Dye Degradation

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Photocatalytic Activity of Nickel Doped CoO Nanocomposite for the Degradation of Azure A Dye

Asian Journal of Chemistry ◽

10.14233/ajchem.2021.22996 ◽

2020 ◽

Vol 33 (1) ◽

pp. 240-244

Author(s):

Nirmal Singh ◽

Avinash Kumar Rai ◽

Ritu Vyas ◽

Rameshwar Ameta

Keyword(s):

Electron Microscopy ◽

Photocatalytic Activity ◽

Degradation Rate ◽

Dye Degradation ◽

Sol Gel ◽

X Ray Diffraction ◽

X Ray ◽

Azure A ◽

Transmission Electron ◽

Working Parameters

Nanocrystalline cobalt(II) oxide doped with nickel was prepared using the sol-gel method and employed as a photocatalyst for azure A dye degradation under visible light. The prepared photocatalyst was analyzed using energy-dispersive X-ray (EDX) spectroscopy, field emission scanning electron microscopy (FESEM), Fourier-transform infrared (FTIR), X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) techniques. The photocatalytic activity of Ni-doped CoO under different working parameters, like concentration, pH, dosage (Ni-doped and undoped CoO), light intensity for the degradation of azure A dye was also optimzed. It was observed that the dye degradation rate improved after doping. Approximately 76% and 85% of azure A dye was degraded within 90 min through undoped and Ni-doped CoO, respectively.

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Fenton reaction applied for screening natural antioxidants

Food Chemistry ◽

10.1016/j.foodchem.2005.10.009 ◽

2007 ◽

Vol 100 (2) ◽

pp. 542-552 ◽

Cited By ~ 66

Author(s):

Stéphane Caillet ◽

Hanling Yu ◽

Stéphan Lessard ◽

Gilles Lamoureux ◽

Djordje Ajdukovic ◽

...

Keyword(s):

Fenton Reaction ◽

Natural Antioxidants

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Central composite design for the optimization of removal of the azo dye, methyl orange, from waste water using fenton reaction

Journal of the Serbian Chemical Society ◽

10.2298/jsc110315165a ◽

2012 ◽

Vol 77 (2) ◽

pp. 235-246 ◽

Cited By ~ 37

Author(s):

Mahsa Azami ◽

Morteza Bahram ◽

Sirous Nouri ◽

Abdolhosein Naseri

Keyword(s):

Reaction Time ◽

Methyl Orange ◽

Central Composite Design ◽

Response Surface ◽

Fenton Reaction ◽

Dye Degradation ◽

Polynomial Equation ◽

Initial Concentration ◽

Model Response ◽

Central Composite

In this study the degradation of Methyl Orange, using Fenton reaction was studied and optimized using central composite design as a response surface methodology. The effects of various experimental parameters in this reaction were investigated using central composite design. 28 experiments, with 4 factors and 5 levels for each factor were designed. These factors (or variables) were: initial concentration of Fe (II), initial concentration of H2O2, initial concentration of oxalate and the reaction time. A full-quadratic polynomial equation between the percentage of dye degradation (as a response) and the studied parameters was established. After removing the non-significant variables from the model, response surface method was used to obtain the optimum conditions. The optimum ranges of variables were: 0.25 - 0.35 mM for initial concentration of Fe (II), 5-17 mM for initial concentration of H2O2, 4-9 mM for initial concentration of oxalate, and 50-80 min for the reaction time. Also the results of extra experiments showed that these optimized values can be used for real samples and yield to a high value for the response.

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