Bio-inspired ZnO NPs synthesized from Citrus sinensis peels extract for Congo red removal from textile wastewater via photocatalysis: Optimization, mechanisms, techno-economic analysis

Yashni, G.; Al-Gheethi, Adel; Dai-Viet, N. Vo.; Al‐Kahtani, Abdullah A.; Hazhar, Nurul Jihan Nor; Noman, Efaq Ali; Alkhadher, Sadeq Abdullah Abdo

doi:10.1016/j.chemosphere.2021.130661

Cited by 68 publications

(12 citation statements)

References 54 publications

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“…The oxidation of dihydroxy-substituted naphthalene, followed by the beating of an ethylene molecule, maybe what forms naphthoquinone. The complete mineralization of the dye is ensured by the production of CO 2 (Yashni et al 2021).…”

Section: The Proposed Mechanism and Pathway For Photodegradation Of R...mentioning

confidence: 99%

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Optimization and modeling of solar photocatalytic degradation of raw textile wastewater dyes using green ZnO-ED NPs by RSM

Dihom,

Mohamed,

Al-Gheethi

et al. 2024

Water Practice &Amp; Technology

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This study aims to use green ZnO-ED NPs produced from Eleocharis dulcis (E. dulcis) extract to maximize solar photocatalytic degradation of raw textile wastewater. The optimization of photocatalysis was decided using the response surface methodology (RSM) as a function of ZnO-ED NPs mass load (0.1–2 g), initial concentration (10–100%), pH (4–9), and contact time (60–200 min). The maximum decolorization (87.34%) and COD removal (100%) were recorded at pH 7, time (60 min), ZnO-ED NPs dosage (2 g/L), and 10% of color concentrations with R2 coefficient of 0.78 at p < 0.05. FESEM analysis showed the presence of granules with smaller diameters than the diameter of the ZnO-ED NPs granules before SPD. EDX analysis revealed the presence of impurities like copper (Cu). XRD analysis indicated the purity of ZnO-ED NPs after SPD, as the values were all quite similar to the XRD values before SPD. The results of an AFM analysis presented that agglomerations of ZnO-ED NPs, in contrast, were somewhat homogeneous in size, nature, and dispersion before SPD.

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Section: The Proposed Mechanism and Pathway For Photodegradation Of R...mentioning

confidence: 99%

“…Several studies have obtained the highest deterioration efficiencies using this approach. For example, Yashni et al (2021) optimized the Congo red (CR) photodegradation using CCD-RSM. The maximum degradation occurred (96%) at CR concentrations of 5-20 mg/L, pH values of 3-11, and ZnO NPs of (0.05-0.2 g).…”

Section: Introductionmentioning

confidence: 99%

Optimization and modeling of solar photocatalytic degradation of raw textile wastewater dyes using green ZnO-ED NPs by RSM

Dihom,

Mohamed,

Al-Gheethi

et al. 2024

Water Practice &Amp; Technology

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“…The integration of economic analysis and cost optimization approaches into RSM optimization models can also be considered for LWW processes. This could involve considering the economic feasibility, cost-effectiveness, and affordability of treatment technologies, and optimizing the processes based on economic criteria, such as capital and operational costs, return on investment, and cost-benefit analysis [ 193 , 194 ]. Such studies will help implement optimized treatment technologies in livestock farming operations in the most economical way.…”

Section: Future Research Directionsmentioning

confidence: 99%

Response surface methodology for process optimization in livestock wastewater treatment: A review

Reza,

Chen,

Mao

2024

Heliyon

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“…Due to their impact, the treatment of these types of pollutants is being addressed by researchers worldwide. In this sense, one of the most used materials for the treatment of dyes is ZnO, which has reported high efficiencies in the photodegradation of several dyes such as MB, 52 rhodamine B, 53 methyl orange 54 and Congo red, 55 to mention a few. Figure 6 Depending on the extract used during the synthesis, the properties of ZnO NPs can be different which is attributed to the presence of different phytochemicals in each botanical material used.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

“…Due to their impact, the treatment of these types of pollutants is being addressed by researchers worldwide. In this sense, one of the most used materials for the treatment of dyes is ZnO, which has reported high efficiencies in the photodegradation of several dyes such as MB,52 rhodamine B,53 methyl orange54 and Congo red,55 to mention a few. Figure6(a) shows the UV-visible absorption spectra of the photocatalytic degradation of MB in the presence of ZnO NPs synthesized with Mexican marigold extract, while Fig.…”

mentioning

confidence: 99%

Photocatalytic activity of ZnO nanoparticles synthesized from zinc nitrate and botanical extracts of neem, chrysanthemum, Mexican marigold and shiitake mushroom

López‐Martínez

Tejeda‐Ochoa

Cervantes-Gaxiola

et al. 2023

J of Chemical Tech & Biotech

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Background Green synthesis emerges as a need to obtain functional materials, but this also involves following certain principles that imply methods and inputs that are friendlier to health and the environment. A wide variety of materials can be synthesized under these principles, one of them being ZnO, which can be used for environmental, electronic and biomedical applications to mention a few. In this work, ZnO nanoparticles (NPs) were synthesized using aqueous extracts of neem, chrysanthemum, Mexican marigold and shiitake mushroom and subsequently used to degrade methylene blue (MB) under solar light irradiation. The NPs were characterized by UV–visible spectroscopy, transmission electron microscopy, X‐ray diffraction, Fourier transform infrared spectroscopy and thermogravimetric analysis to investigate the structural, optical and electronic properties of the NPs. Results The results indicate the formation of hemispherical NPs with aggregates in a size range of 5.38–28.37 nm. All the samples presented a hexagonal wurtzite crystalline structure. The best photocatalytic performance for MB degradation was shown by ZnO NPs obtained using Mexican marigold (0.0873 ± 0.008 min−1) followed by those obtained using shiitake mushroom (0.0602 ± 0.002 min−1), neem (0.0365 ± 0.02 min−1) and chrysanthemum (0.0357 ± 0.01 min−1). Conclusions Botanical aqueous extracts have the potential to be used in the synthesis of semiconductor materials, as they allow the modification of the size and band gap. Many of the phytochemicals present in the extracts help to improve the interaction between catalyst and pollutants, in this case MB, and therefore have a positive impact on the degradation of textile pollutants. © 2022 Society of Chemical Industry (SCI).

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Bio-inspired ZnO NPs synthesized from Citrus sinensis peels extract for Congo red removal from textile wastewater via photocatalysis: Optimization, mechanisms, techno-economic analysis

Cited by 68 publications

References 54 publications

Optimization and modeling of solar photocatalytic degradation of raw textile wastewater dyes using green ZnO-ED NPs by RSM

Optimization and modeling of solar photocatalytic degradation of raw textile wastewater dyes using green ZnO-ED NPs by RSM

Response surface methodology for process optimization in livestock wastewater treatment: A review

Photocatalytic activity of ZnO nanoparticles synthesized from zinc nitrate and botanical extracts of neem, chrysanthemum, Mexican marigold and shiitake mushroom

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