Bio-waste chicken eggshell-derived calcium oxide for photocatalytic application in methylene blue dye degradation under natural sunlight irradiation

Jaiswal, Krishna Kumar; Dutta, Swapnamoy; Pohrmen, Cheryl Bernice; Verma, Ravikant; Kumar, Arvind; Ramaswamy, Arun Prasath

doi:10.1080/24701556.2020.1813769

Cited by 51 publications

(22 citation statements)

References 78 publications

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“…The results presented by UV-Vis were similar to those shown in Figure 2A. Remarkably, it is worth pointing out that the values of the absorption bands of AB 210 decreased after exposure to the sunlight, indicating a lower contribution of the azo group of the dye, and consequently its discoloration (Solomons and Fryhle, 2009;Rosu et al, 2017;Jaiswal et al, 2021). In other words, the results indicate that the action of sunlight reduced or cleavage the azo group of the dye, referring to a new product generated.…”

Section: Evaluation Of Solar Simulator On Ab210supporting

confidence: 77%

Stability of Acid Black 210 dye in Tannery Industry Effluent in Aqueous Solution Is Limited and Generates Harmful Subproducts

Christovam

Franco

Zocolo

et al. 2022

Front. Environ. Sci.

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The present work investigates the occurrence of the Acid Black 210 (AB210) dye and its subproducts in the tannery industry by analytical techniques. The AB210 is an important dye characterized by three azo groups as a chromophore and is one of the most used azo dyes in the tannery industry. The stability of AB210 in front of chlorination, sunlight exposition, and ambient conditions was investigated, as well as its occurrence and degradation products in the tannery wastewater. The stability study of AB210 showed a decrease in dye concentration of up to 45% after 14 days at room temperature. The exposure of the AB 210 by a solar simulator for 3 h showed discoloration of the dye. Furthermore, the chlorination of the AB210 caused a reduction of 25% in the intensity of the absorption band at the visible region after 300 s of treatment with sodium hypochlorite (NaClO). Studies based on high-performance liquid chromatography (HPLC-DAD), liquid chromatography-mass spectrometry (LC-MS/MS), and nuclear magnetic resonance (NMR) have indicated the occurrence of several harmful compounds such as benzene, cresol, naphthalene, phenol, 2-naphthylamine, and phenylacetic acid, and three aromatic amines, 2-naphthylamine, 2,6-dimethylaniline and 4-nitroaniline from the tannery industry. The cytotoxicity assay showed toxicity for the samples stored for a long period. Thus, the immortalized human keratinocyte (HaCAT) and 3T3 cells assays for the AB210 stored for 14 days showed 70% cell death in both strains evaluated. Our results demonstrated that the AB210 degradation is a great environmental concern due to increased toxicity for the body of living beings, especially for humans, as their biotransformation produces harmful compounds such as amines, which have been widely condemned by the International Agency for Research on Cancer.

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Section: Evaluation Of Solar Simulator On Ab210supporting

confidence: 77%

Stability of Acid Black 210 dye in Tannery Industry Effluent in Aqueous Solution Is Limited and Generates Harmful Subproducts

Christovam

Franco

Zocolo

et al. 2022

Front. Environ. Sci.

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“…CaO has the highest E g ∼ 4.17 eV and a dielectric constant of 11.8 among light alkaline earth oxides. 19 CaO is applied in many fields, which includes its use as additives in refractory, bactericides in the biomedical field, and adsorbents especially in catalysis. 20 For photocatalytic dye degradation, however, developing high-performance CaO that provides more active sites and a large specific surface area is still a challenge.…”

Section: Introductionmentioning

confidence: 99%

“…In general, CaO white, caustic, alkaline, and crystalline powder are used. CaO has the highest E g ∼ 4.17 eV and a dielectric constant of 11.8 among light alkaline earth oxides . CaO is applied in many fields, which includes its use as additives in refractory, bactericides in the biomedical field, and adsorbents especially in catalysis .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Degradation with Sustainable CaO Nanorods Doped with Ce and Cellulose Nanocrystals: In Silico Molecular Docking Studies

et al. 2022

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This research work intends to evaluate the photoactivity of calcium oxide (CaO) nanorods (NRs) doped with cellulose nanocrystals (CNCs) and cerium (Ce). CNC-doped CaO and Ce/CNC codoped CaO were synthesized via the sol–gel technique. Structural, optical, morphological, physiochemical, phase constitution, and functional group evaluations were performed. The photodegradation of the prepared nanostructures was analyzed by observing photodegradation of a mixture of methylene blue and ciprofloxacin dye under light irradiation. The photocatalytic activity of the dye was drastically enhanced upon codoping in CaO. For both Escherichia coli and Staphylococcus aureus , statistically significant inhibitory zones ( p < 0.05) were achieved in the case of CNCs and pristine and codoped CaO. Furthermore, in silico molecular docking studies (MDS) were accomplished against DNA gyrase from nucleic acid biosynthesis and enoyl-[acyl-carrier-protein] reductase (FabI) from the fatty acid biosynthetic pathway to rationalize the possible mechanism behind these antibacterial activities.

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“…Many heterogeneous catalysts (TiO 2 , ZnO, CuO, SnO 2 , WO 3 etc.) are used for mineralization of dyes due to less time of reaction and requirement of trace amount of catalyst (Jaiswal et al, 2020). But preparations of such metal oxides involve hazardous and toxic chemicals, high temperature, high energy and huge cost (Honarmand et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Valorisation of Waste Eggshell for Degradation of Selected Cationic Dyes From the Aqueous Environment

MUKHERJEE¹,

MUKHERJEE²,

BETAL³

2022

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Egg production has been remarkably increased worldwide in the last thirty years, thereby itgenerates huge waste eggshell. Chicken waste eggshell is approximately 11% of the total eggweight and it contains calcium carbonate (CaCO3) and calcium oxide (CaO). In this work, wasteeggshell was modified by urea (UES) and used as a catalyst to degrade cationic dyes. Brilliant greenand Malachite green were efficiently degraded via optimization of initial concentration of dyes, pHof media, time of contact and amount of catalyst. The reaction followed first order kinetics. The LCMSstudy was performed to understand the catalytic degradation pathway of malachite green.Hence, the present study might be helpful for removal of selected organic dyes via valorisation ofwaste eggshell.

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Bio-waste chicken eggshell-derived calcium oxide for photocatalytic application in methylene blue dye degradation under natural sunlight irradiation

Cited by 51 publications

References 78 publications

Stability of Acid Black 210 dye in Tannery Industry Effluent in Aqueous Solution Is Limited and Generates Harmful Subproducts

Stability of Acid Black 210 dye in Tannery Industry Effluent in Aqueous Solution Is Limited and Generates Harmful Subproducts

Enhanced Photocatalytic Degradation with Sustainable CaO Nanorods Doped with Ce and Cellulose Nanocrystals: In Silico Molecular Docking Studies

Valorisation of Waste Eggshell for Degradation of Selected Cationic Dyes From the Aqueous Environment

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