Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed Powders

Mbarek, Wael Ben; Saurina, J.; Escoda, L.; Pineda, Eloi; Khitouni, Mohamed; Suñol, J.J.

doi:10.3390/met10121578

Cited by 7 publications

(12 citation statements)

References 48 publications

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“…Various reports are available which show the harmful effects of azo dyes on plants (plant growth and germination) [3]. At present, there are physical-chemical and biological methods to degrade dye wastewater, such as adsorption [4][5][6], ozonation [7,8], Fenton's reagent treatment [8], photocatalysis [9], reductive degradation [10][11][12], and microbial processes [13]. Adsorption, flocculation, electro-coagulation, precipitation, ozonation, and irradiation are examples of physical and chemical treatments.…”

Section: Introductionmentioning

confidence: 99%

Removal of Reactive Black 5 Azo Dye from Aqueous Solutions by a Combination of Reduction and Natural Adsorbents Processes

Mbarek

Daza

Escoda

et al. 2023

Metals

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In this study, a combined process of reduction and adsorption for the degradation of azo dye with nanocrystalline Fe80Si10B10 powder as a reducing agent is analyzed. A mechanical alloying technique produced the powdered alloys needed for the redox process. The synthesized nanocrystalline structure favors the efficiency of the reduction step of Reactive Black 5 (RB5) azo dye. According to the UV-Vis analysis, the reductive process alone allowed for nearly complete color removal after 3 min of reaction. In this regard, the nanocrystallized FeSiB powder has excellent application potential in the first step of the reduction processes for degrading azo dye solutions. Indeed, the nanocrystalline FeSiB powder outperforms commercial Fe powders in terms of degradation efficiency because of the formation of multiple micro-batteries between the α-Fe solid solution and the Fe3Si nanocrystalline phases, favoring the loss of electrons from iron and exhibiting different corrosion resistance. In the second step, the adsorption process, the efficient removal of intermediate undesired compounds from the reduction processes, principally aromatic amines, is analyzed. Different adsorbents, including wood, graphene oxide, activated carbon, and pine particles, were used. The results suggest that graphene oxide and activate carbon performed the best for secondary product adsorption following RB5 degradation. The current study could serve as a guide for environmental applications, such as industrial wastewater treatment, using metallic powders produced by high-energy mechanical alloying.

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Section: Introductionmentioning

confidence: 99%

Removal of Reactive Black 5 Azo Dye from Aqueous Solutions by a Combination of Reduction and Natural Adsorbents Processes

Mbarek

Daza

Escoda

et al. 2023

Metals

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“…The azo dye solution’s decolorization follows first-order kinetics principles as well. As a result, the high effectiveness of Mn–Al-based alloys observed in decolorization treatments of dyed wastewater, as noted in prior studies, can be adjusted and augmented by moderate alloying with additional transition metals [ 55 ]. The ball-milled Ca65Al35 powder also demonstrated remarkable degrading efficiency and high response rates, removing more than 90% of a 40 mg L1 dye solution in less than a minute.…”

Section: Nanoreductive Processesmentioning

confidence: 99%

Nanomaterials as a Sustainable Choice for Treating Wastewater: A Review

et al. 2022

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The removal of dyes from textile effluents utilizing advanced wastewater treatment methods with high efficiency and low cost has received substantial attention due to the rise in pollutants in water. The purpose of this work is to give a comprehensive analysis of the different treatments for removing chemical dyes from textile effluents. The capability and potential of conventional treatments for the degradation of dyeing compounds in aqueous media, as well as the influence of multiple parameters, such as the pH solution, initial dye concentration, and adsorbent dose, are presented in this study. This study is an overview of the scientific research literature on this topic, including nanoreductive and nanophotocatalyst processes, as well as nanoadsorbents and nanomembranes. For the purpose of treating sewage, the special properties of nanoparticles are currently being carefully researched. The ability of nanomaterials to remove organic matter, fungus, and viruses from wastewater is another benefit. Nanomaterials are employed in advanced oxidation techniques to clean wastewater. Additionally, because of their small dimensions, nanoparticles have a wide effective area of contact. Due to this, nanoparticles’ adsorption and reactivity are powerful. The improvement of nanomaterial technology will be beneficial for the treatment of wastewater. This report also offers a thorough review of the distinctive properties of nanomaterials used in wastewater treatment, as well as their appropriate application and future possibilities. Since only a few types of nanomaterials have been produced, it is also important to focus on their technological feasibility in addition to their economic feasibility. According to this study, nanoparticles (NPs) have a significant adsorption area, efficient chemical reactions, and electrical conductivity that help treat wastewater effectively.

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“…As an example, Mn-Al-based alloys were introduced in dissolutions with azoic dye. The interaction with the metallic particles favors the decolorization process of the dyes by breaking the azo bond of the macromolecule [2].…”

Section: Contributionsmentioning

confidence: 99%