Application of zero valent iron (ZVI) immobilized in Ca-Alginate beads for C.I. Reactive Red 195 catalytic degradation in an air lift reactor operated with ozone

Pereira, Cíntia Andreia Alves; Nava, Mariana Riboli; Walter, Jilvana Barbara; Scherer, Claudio Eduardo; Dalfovo, Amanda Dominique Kupfer; Barreto-Rodrigues, Márcio

doi:10.1016/j.jhazmat.2020.123275

Cited by 34 publications

(10 citation statements)

References 44 publications

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“…The photodegradation of RR195 and MO dyes over the fabricated zinc oxide nanoparticles has been compared with other catalysts reported in the literature as shown in Table 6. The tabulated data show that the catalyst type, degradation percentage, time, and the other conditions for the photodegradation of RR195 and MO dyes [44][45][46][47][48][49][50][51][52][53][54][55][56].…”

Section: Comparison Of Photodegradation Of Rr195 and Mo Dyes With Other Catalystsmentioning

confidence: 99%

Auto-combustion Fabrication and Optical Properties of Zinc Oxide Nanoparticles for Degradation of Reactive Red 195 and Methyl Orange Dyes

Ali

Ahmed

Amin

et al. 2021

J Inorg Organomet Polym

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We are pleased to submit the attached original research article entitled "Auto-combustion fabrication and optical properties of zinc oxide nanoparticles for degradation of reactive red 195 and methyl orange dyes" for consideration for publication as a research article Journal of Inorganic and Organometallic Polymers and Materials.In this manuscript, zinc oxide nanoparticles were synthesized using an auto-combustion technique with fuels (tartaric acid and citric acid) according to the rule of the combustion method. the obtained zinc oxide nanoparticles were studied using various tools such XRD, DRS, TEM and FTIR.The results of XRD confirmed that the formation of the hexagonal structure of the synthesized zinc oxide after calcination at 500 o C. The extracted data from XRD and TEM techniques showed that the crystallite size of the fabricated zinc oxide nanoparticles determined to be 24-39 nm. The direct band gap, lattice parameters, unit cell volume (V), the dislocation density (D) and the Zn-O bond length (L) of the synthesized zinc oxide were determined. The values of the lattice parameters (a and c), the ratio (c/a), unit cell volume (V) and Zn-O bond length (L) were determined and found in the range of 3.2333-

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Section: Comparison Of Photodegradation Of Rr195 and Mo Dyes With Other Catalystsmentioning

confidence: 99%

Auto-combustion Fabrication and Optical Properties of Zinc Oxide Nanoparticles for Degradation of Reactive Red 195 and Methyl Orange Dyes

Ali

Ahmed

Amin

et al. 2021

J Inorg Organomet Polym

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“…In spite of the numerous advantages of Fe 0 NPs such as large surface area, high and robust reducing ability, feasible in-situ operation, wide pollutant applicability, cost-effectiveness and eco-friendly nature (Bezbaruah et al 2011;Angaru et al 2021;Blundell and Owens 2021;Hemmat et al 2021;Wei et al 2021), there still some drawbacks. One of the main drawbacks is the rapid formation of iron hydroxide and oxide layer on its surface which suppresses the Fe 0 NPs catalytic efficiency (Blundell and Owens 2021;Hemmat et al 2021;Pereira et al 2021;Wei et al 2021;Xie et al 2021a, b). A route to overcome this drawback is to combine the Fe 0 NPs with a second metal to form a bimetallic nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

“…Providentially, immobilizing the bimetal on a separable support decreases the bimetal oxidation, limits its mobility and aggregation, and negates the need for additional separation process (Chang et al 2015;Hemmat et al 2021). Among the various supports, the natural biopolymer alginate gained researcher's attention due to its non-toxicity, biodegradability, ease of handling, and low-cost (Bezbaruah et al 2011;Pereira et al 2021). Alginate beads enjoy significant porosity that enables the access of pollutants to the particles immobilized inside them.…”

Section: Introductionmentioning

confidence: 99%

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Optimizing Fe0/Ni0/alginate beads as a stable and recoverable catalyst for removing highly toxic water contaminants: full-factorial design

Radwan

El‐Wakeel

Abdel-Wahed

et al. 2022

Int. J. Environ. Sci. Technol.

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Pollution by highly toxic contaminants poses a great threat to the aquatic environment and human life. Bimetallic materials have been proven to be efficient for the removal of such contaminants. In this study, the bimetallic Fe0/Ni0/alginate beads have been prepared using solvothermal technique followed by polymerization of alginate. Full-factorial design has been utilized to optimize the preparation conditions including the weight ratios of Fe and Ni, and time of the solvothermal process. The bimetal made from equal weights of Ni and Fe metals along with alginate has shown the best efficiency for the removal of 2,4,6-trichlorophenol (2,4,6-TCP, ~ 70%) as a model organic pollutant under acidic conditions (pH = 2) with minor contribution of alginate component in the removal process. Adsorption followed by reduction has been defined as the removal mechanism using GC/MS/MS chromatography in the case of 2,4,6-TCP. A mathematical model was established to describe the 2,4,6-TCP removal by the optimally prepared material. Differently, Pb2+ ions were removed predominantly by the alginate with minor effect of the bimetal (max. removal = 96.91% at pH 5 and after 2 h contact time). Accordingly, it was difficult to describe this process by a mathematical model. However, in both cases, the optimally prepared material has exhibited superior stability and reusability rather than the neat Fe0/Ni0 bimetal under the same experimental conditions. To sum up, the designed bimetallic Fe0/Ni0/alginate beads can be considered as an efficient catalyst for the removal of highly toxic pollutants from aqueous media.

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“…To overcome these limitations, alternatives such as the sequential association with ferrous catalysts can eliminate the remaining oxidants by converting them into additional doses of HO• through Fenton-type reactions or catalytic ozonation emerge (Bhanot et al, 2020). It is essential to point out that various forms of chemical synthesis can obtain ferrous catalytic materials, but also by using metallurgical/steel industrial waste, which can be used in combination with inert matrices such as calcium alginate, chitosan, bentonite, cellulose, zeolite, stone-pumice, carboxymethylcellulose, kaolinite, among others, to control the hydraulic conductivity and reduce the self-aggregation of particles which reduces the reactivity (Limper et al, 2018;Abukhadra et al, 2021;Sewwandi and Nitisoravut, 2020;Pereira et al, 2021;Ali et al, 2018). Among the matrices reported in the literature, kaolinite is a widely applied clay O3/UV-type POAs integrated with catalytic material … Rev.…”

Section: Introductionmentioning

confidence: 99%

O3/UV-type POAs integrated with catalytic material based on scrap iron and mineral clay to degrade 2,4 and 2,6-dinitrotoluene in Red Water

Walter¹,

Tonholi²,

Barreto-Rodrigues³

2022

Rev. ambiente água

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Nitroaromatic compounds have significant economic and industrial relevance in various inputs such as dyes, inks, agrochemicals, and explosives. In the manufacture of the explosive 2,4,6 trinitrotoluene (TNT), there is the formation of contaminated wastewater that is difficult to treat because it contains, among other compounds, high concentrations of 2,4 and 2,6-trinitrotoluene (DNT). In this work, the application of advanced oxidation processes of the O3/UV type was studied in sequential integration with catalytic material based on metallic iron slag (SZVI) and mineral matrix to treat an industrial effluent from the explosives industry contaminated with compounds nitroaromatics. Two types of mineral matrix composition were studied, kaolinite (Kau) and pumice powder (Pum), having been observed in the conditions of best efficiency (O3/UV-SZVI/Kau) 100% removal of both nitroaromatic compounds and residual ozone. On the other hand, photo-ozonation alone could only partially remove these components, with 38% DNT removal and 3.2 mg/L residual O3 observed, proving the importance of integration with the catalytic matrix for more effective treatment of the studied effluent. Keywords: DNT degradation, explosives industry effluent, Scrap zero-valent iron.

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Application of zero valent iron (ZVI) immobilized in Ca-Alginate beads for C.I. Reactive Red 195 catalytic degradation in an air lift reactor operated with ozone

Cited by 34 publications

References 44 publications

Auto-combustion Fabrication and Optical Properties of Zinc Oxide Nanoparticles for Degradation of Reactive Red 195 and Methyl Orange Dyes

Auto-combustion Fabrication and Optical Properties of Zinc Oxide Nanoparticles for Degradation of Reactive Red 195 and Methyl Orange Dyes

Optimizing Fe0/Ni0/alginate beads as a stable and recoverable catalyst for removing highly toxic water contaminants: full-factorial design

O3/UV-type POAs integrated with catalytic material based on scrap iron and mineral clay to degrade 2,4 and 2,6-dinitrotoluene in Red Water

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