Process modeling toward higher degradation and minimum energy consumption of an electrochemical decontamination of food dye wastewater

Hussain, Sajjad; Khan, Hassan; Khan, N. A.; Gul, Saima; Wahab, Fazal; Khan, Khurram Imran; Zeb, Shakeel; Khan, Sabir; Baddouh, Ali; Mehdi, Shozab; Maldonado, Ariane Fiorese; Campos, Marcelo

doi:10.1016/j.eti.2021.101509

Cited by 18 publications

(4 citation statements)

References 40 publications

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“…where ε is the porosity of membrane, W w is the weight (g) of the wet membrane, W d is the weight (g) of the dry membrane, ρ w is the density of pure water (g/cm 3 ), A is the membrane area (cm 2 ) and δ is the thickness of membrane (cm). The membranes' mean pore radius was calculated using Guerout-Elford-Ferry equation (3).…”

Section: Characterization Of the Membranesmentioning

confidence: 99%

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Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Ndlovu

Malatjie

Donga

et al. 2022

J of Applied Polymer Sci

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Azo dyes effluent can cause severe and chronic effects to living organisms since they are toxic, carcinogenic, and mutagenic. They color water, reduce dissolved oxygen, block light penetration, decrease the rate of photosynthesis and adversely affect the whole aquatic biota. Catalysis is one of the methods used in degrading azo dyes to less harmful species. Catalytic palladium nanoparticles (Pd NPs) are effective in the degradation of azo dyes owing to their large surface area and unique electronic properties. However, they are costly, unstable and easily aggregate; hence, a substrate is necessary to enhance their stability, reusability, durability, catalytic efficiency, and cost effectiveness.Herein, Pd NPs were in-situ synthesized and immobilized in beta cyclodextrin (β-CD) modified polyvinylidene-fluoride (PVDF) membranes. The fabricated membranes were characterized using different techniques. Pd NPs slightly improved the properties and performance of the membranes. A complete catalytic degradation of methyl orange azo dye was carried out within 20 min in the presence of sodium borohydride and the increase in Pd NP content increased the rate of degradation. The membranes were recycled and reused five times with no considerable loss of catalytic performance. Therefore, PVDF/β-CD-Pd membranes proved to be self-cleaning, reusable, and efficient in removal of methyl orange from water.

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Section: Characterization Of the Membranesmentioning

confidence: 99%

“…Rapid growth in industrial use of dyes in the production of pigments, paints, textiles, paper, plastics, leather, food, and pharmaceuticals, has resulted in generation of dye effluents which end up polluting the environment and water bodies 1–3 . Most of these dyes are azo dyes which are resistant to biodegradation due to the azo group.…”

Section: Introductionmentioning

confidence: 99%

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Ndlovu

Malatjie

Donga

et al. 2022

J of Applied Polymer Sci

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“…RSM mainly establishes relations between independent variables and their responses using a minimum number of experiments [ 38 ]. The RSM technique is used in various applications such as in pharmaceuticals, chemical processes, microbiology, etc., to evaluate and optimize the interactive effect among the influencing factors [ 46 , 47 ].…”

Section: Introductionmentioning

confidence: 99%

Composites of Lignin-Based Biochar with BiOCl for Photocatalytic Water Treatment: RSM Studies for Process Optimization

et al. 2023

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Textile effluents pose a massive threat to the aquatic environment, so, sustainable approaches for environmentally friendly multifunctional remediation methods degradation are still a challenge. In this study, composites consisting of bismuth oxyhalide nanoparticles, specifically bismuth oxychloride (BiOCl) nanoplatelets, and lignin-based biochar were synthesized following a one-step hydrolysis synthesis. The simultaneous photocatalytic and adsorptive remediation efficiency of the Biochar–BiOCl composites were studied for the removal of a benchmark azo anionic dye, methyl orange dye (MO). The influence of various parameters (such as catalyst dosage, initial dye concentration, and pH) on the photo-assisted removal was carried out and optimized using the Box–Behnken Design of RSM. The physicochemical properties of the nanomaterials were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, thermogravimetric analysis, nitrogen sorption, and UV–Vis diffuse reflectance spectroscopy (DRS). The maximum dye removal was observed at a catalyst dosage of 1.39 g/L, an initial dye concentration of 41.8 mg/L, and a pH of 3.15. The experiment performed under optimized conditions resulted in 100% degradation of the MO after 60 min of light exposure. The incorporation of activated biochar had a positive impact on the photocatalytic performance of the BiOCl photocatalyst for removing the MO due to favorable changes in the surface morphology, optical absorption, and specific surface area and hence the dispersion of the photo-active nanoparticles leading to more photocatalytic active sites. This study is within the frames of the design and development of green-oriented nanomaterials of low cost for advanced (waste)water treatment applications.

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“…1,2 The alarming discharge of organic dye contaminants from the textile industry has brought about serious water pollution, which affects the natural environment and seriously harms human health. 3–5 In order to solve these problems, various technologies, such as physical adsorption, 6 membrane filtration, 7 biodegradation, 8 Fenton processes, 9 electrochemical methods 10 and photocatalytic degradation, 11 are applied to get rid of organic dye pollutants in wastewater. Among them, visible-light photocatalysis over semiconductors is an economic, efficient and sustainable method, because it can make the best of renewable and clean solar energy to remove organic pollutants in wastewater.…”

Section: Introductionmentioning

confidence: 99%

Kilogram-scale fabrication of TiO₂ nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity

et al. 2023

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Process modeling toward higher degradation and minimum energy consumption of an electrochemical decontamination of food dye wastewater

Cited by 18 publications

References 40 publications

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Composites of Lignin-Based Biochar with BiOCl for Photocatalytic Water Treatment: RSM Studies for Process Optimization

Kilogram-scale fabrication of TiO₂ nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity

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Process modeling toward higher degradation and minimum energy consumption of an electrochemical decontamination of food dye wastewater

Cited by 18 publications

References 40 publications

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Composites of Lignin-Based Biochar with BiOCl for Photocatalytic Water Treatment: RSM Studies for Process Optimization

Kilogram-scale fabrication of TiO2 nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity

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Kilogram-scale fabrication of TiO₂ nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity