Recent advances in decolourization of dyes using iron nanoparticles: A mini review

Kalra, Anuja; Gupta, Anil

doi:10.1016/j.matpr.2020.04.677

Cited by 26 publications

(14 citation statements)

References 53 publications

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“…High costs are incurred for the routine removal of pollution, and health problems are eradicated by eliminating biological and dye-based pollution [12]. Methods used to remove the dye include physical methods, chemical methods, and biological methods [1]. Multiple technologies have been applied to remove dyes from various aqueous solutions, including coagulation [13], flocculation [14], electrocoagulation [15,16], electrochemical decolorization, froth flotation, ion exchange, membrane filtration, reverse osmosis, microbial decolorization and degradation (it is inexpensive, eco-friendly, and produces less amount of sludge for degradation of azo dyes) [17].…”

Section: Dye Removal Methodsmentioning

confidence: 99%

“…Residual dyes are the main contaminants present in wastewater from many industries, such as dyeing, cosmetics, food, hair dye, inks, packaging, paper and pulp, pharmaceuticals, plastics, printing, rubber, textiles and others that pollute water [1]. In the textile industry, dyeing is associated with a large amount of water, and thus produces a larger amount of coloured wastewater.…”

Section: Introductionmentioning

confidence: 99%

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Potential Applications of Nanomaterials in Wastewater Treatment

Sanny

Kucmanová

Gerulová

et al. 2021

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

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Over the last few decades, nanotechnologies have gained a great deal of attention, and various nanomaterials and techniques have been developed for water remediation. This study deals with the adsorption of Naphthol green B onto the magnetite nanoparticles synthetized by the coprecipitation method at the laboratory temperature. According to the obtained results, the sorption process is obvious only at the acidic condition when the pH of solution decreases to pH level 3. According to nonlinear fit of experimental data, the sorption of the Naphthol green B onto magnetite nanoparticles is assumed as multilayer, while the Freundlich model fits better (96.158 %) than the Langmuir model does (55.941 %).

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Section: Dye Removal Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Potential Applications of Nanomaterials in Wastewater Treatment

Sanny

Kucmanová

Gerulová

et al. 2021

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

View full text Add to dashboard Cite

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“…Based on the charge of the particles, they are divided into ionic (cationic and anionic dyes) and non-ionic. Ionic dyes generally pose a higher risk, which is due to their reactivity and carcinogenic nature [5,7]. According to their colour and the functional group attached to the chemical structure, there exist chromophore dyes (azo, anthraquinone, indigo, xanthenes, phthalocyanine, nitrated, and nitrosated and triphenylmethane dyes) or auxochrome dyes (they contain acid or anionic dyes, basic or cationic dyes, vat dyes, direct dyes, mordant dyes, reactive dyes, azo dyes, and dispersed dyes) [3,6,8].…”

Section: Classification Of Dyesmentioning

confidence: 99%

Preliminary Study Into the Decolorization of Selected Dyes By the Ozone Application

Gerulová

Sanny

Kucmanová

et al. 2021

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

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Synthetic dyes widely used in many kinds of industry affect the colour of wastewater when released to environment due to insufficient treatment in typical sewage treatment plants. Only a small dose of those dyes may significantly affect colour of water and, according to the chemical composition, may pose risks to wildlife and humans. In the research described in this study, decolorization of three various dyes was investigated. Since colour removal of Congo Red such as Methylene blue using ozone have been reported by several authors, and the literature on Naphthol Green B is rather limited, in the present study we compare the decolorization rate of CR, MB and NGB. The colour removal occurred quickly and more than 90% of colour reduction was achieved within 3-6 minutes throughout all tested pH of the solution.

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“…5 Researchers have introduced various treatments for dye removal to overcome these problems, which can be categorized as biological, physical and chemical methods. 6,7 Biological methods such as trickling filter 8 and activated sludge are environmentally friendly and affordable. 9 However, they are uneconomical for highly concentrated waste pollutants and sensitive to numerous environmental factors.…”

Section: Introductionmentioning

confidence: 99%

Exploring the potential of highly efficient graphite/chitosan–PVC composite electrodes in the electrochemical degradation of Reactive Red 4

Halim

Adnan

Lahuri

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: Previous reported studies revealed that composite electrodes are effective and suitable for wastewater treatment applications owing to their high porosity and increased electrochemical active area. However, the critical challenges to the wider adoption of composite electrodes for environmental applications are the need to reduce the cost of electrode materials, and to improve both their long-term stability and electrocatalytic performance. This study aims to investigate the efficiency and stability of low-cost graphite/chitosan-polyvinyl chloride (C/Chi-PVC) composite electrodes for Reactive Red 4 (RR4) degradation. Toxicity of the treated RR4 wastewater also was investigated using a seed germination test.RESULTS: A cyclic voltammetry study conducted revealed that C 49 /Chi 21 -PVC 30 (49% C, 21% Chi, 30% PVC) showed better electrochemical behaviour for hypochlorous ion (OCl − ) formation, which is responsible for RR4 degradation via indirect electrochemical reaction. Owing to the synergistic effect of both materials, high colour, total organic carbon (TOC) and chemical oxygen demand (COD) removals of 99.61%, 89.68% and 76.35%, respectively, were achieved with less electrode damage at optimum electrolysis parameters. The treated RR4 solution displayed low toxicity after 14 days of exposure to the water sample. The electrode stability in the aggressive OCl − solution was studied by characterization of fresh and used electrodes using field emission scanning electron microscopy with energy-dispersive X-ray spectroscopy (FESEM-EDX). This showed no significant difference in surface roughness and elemental composition; the reusability test confirmed that the electrode can be applied in repeated electrolysis.CONCLUSION: Overall, the fabricated electrode in this study showed high efficiency with robust and durable characteristics for wastewater treatment applications.

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Recent advances in decolourization of dyes using iron nanoparticles: A mini review

Cited by 26 publications

References 53 publications

Potential Applications of Nanomaterials in Wastewater Treatment

Potential Applications of Nanomaterials in Wastewater Treatment

Preliminary Study Into the Decolorization of Selected Dyes By the Ozone Application

Exploring the potential of highly efficient graphite/chitosan–PVC composite electrodes in the electrochemical degradation of Reactive Red 4

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