Performance evaluation and optimization of ZnO-PVP nanoparticles for photocatalytic wastewater treatment: Interactions between UV light intensity and nanoparticles dosage

Abdolalian, Saba; Taghavijeloudar, Mohsen

doi:10.1016/j.jclepro.2022.132833

Cited by 27 publications

(2 citation statements)

References 36 publications

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“…In general, a positive response to a broad spectrum of pathogenic microorganisms has been obtained [ [28] , [29] , [30] , [31] ]. It is known that ZnO NPs show a better response in the presence of UV light, showing a better performance in photocatalytic treatments of single NPs [ 32 ] or compounds with ZnO-PVP [ 33 ] because more UV light radiation produces more hydroxyl radicals, leading to a higher reaction rate, which shows a higher efficiency in inhibitory processes. It should be noted that ZnO nanoparticles obtained with C. sativum extract have been widely used and investigated by the team of researchers of this manuscript as an organic reducer for the formation of ZnO nanostructures, the same ones in which their potential has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Enhanced antimicrobial efficacy of biogenic ZnO nanoparticles through UV-B activation: A novel approach for textile garment

Asmat-Campos,

Rojas-Jaimes,

Simbrón de la Cruz

et al. 2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

Enhanced antimicrobial efficacy of biogenic ZnO nanoparticles through UV-B activation: A novel approach for textile garment

Asmat-Campos,

Rojas-Jaimes,

Simbrón de la Cruz

et al. 2024

Heliyon

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“…Keerthana et al [45] utilized a novel hydrothermal technique to prepare PVP assisted Mn-CdS nanorod-like material, which exhibits significant efficacy in degrading methylene blue dye and holds promising potential for application in wastewater treatment. Saba Abdolalian et al [46] synthesized Zn-polyvinylpyrrolidone (ZnO-PVP) modified ZnO nanoparticles. Compared to pristine ZnO, ZnO-PVP demonstrates enhanced photocatalytic degradation efficiency for COD (from 63% to 83%) and phosphate (from 68% to 87%).…”

Section: Introductionmentioning

confidence: 99%

Polymer-Based Immobilized FePMo12O40@PVP Composite Materials for Photocatalytic RhB Degradation

Wang,

Tang,

et al. 2024

Inorganics

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FePMo12O40@PVP composite materials were synthesized with the regulation of polyvinylpyrrolidone (PVP) to control the structure. The samples were characterized by FT-IR, XRD, XPS, SEM, TEM and UV-Vis DRS. The composite retains the Keggin-type polyoxometalates structure, exhibiting a high specific surface area that enhances photon capture efficiency. Analysis of UV-Vis DRS absorption band edge and band gap indicated that the composite was responsive to visible light. Photocatalytic degradation of Rhodamine B (RhB) by FePMo12O40@PVP was investigated under commonly used LED light source, demonstrating excellent photocatalytic performance as 2.5 g-FePMo12O40@PVP (0.015 g) can remove 83% of RhB (10 mg/L) in 40 min. The FePMo12O40@PVP composite material demonstrated sustained moderate degradation efficiency even after undergoing three cycles of repeated use. The non-covalent interaction and strong interfacial coupling between PVP and FePMo12O40 promoted the transfer of h+, and e−, ∙O2−, ·OH, and h+ served as the primary active species in this photocatalytic system. This environmentally friendly material has the potential to significantly reduce energy consumption and offers valuable insights for the future treatment of dye wastewater.

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Enhanced Disinfection Efficiency Using Cu Vortex Diode for Providing Safe Drinking Water: Devising Newer Methodologies

Dixit,

Balapure,

Bhandari

2024

Environmental Quality Mgmt

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The present research aims to refine the hydrodynamic cavitation technique with traditional knowledgebase of Ayurveda for more efficient water disinfection and that has huge potential for implementation in real life, especially for substituting the existing chlorination method for drinking water treatment. The study incorporates use of newer copper reactor configuration, employing vortex flow for generating cavitation for the disinfection of water. Elimination of model contaminant, Escherichia coli, with initial concentration of ∼105 CFU/mL of bacteria was used for the disinfection study. Copper vortex diode with a capacity of 1 m3/h was employed as a cavitating device. The cavitation using copper vortex diode gave significantly higher disinfection, over 30%, compared that with conventional vortex diode, with aluminum as material of construction, under similar conditions. Remarkably, the addition of 0.1% betel leaf oil led to an extraordinary 260‐fold increase in the rate of disinfection, requiring only a single pass to achieve complete bacteria elimination. Furthermore, a notably high synergistic index of 246.96 was achieved for the process intensification approach using the Cu vortex diode. The cost was substantially reduced by approximately three times to 0.011 $/m3 using the Cu vortex diode compared to the conventional vortex diode. The developed strategy offers significantly enhanced performance, as well as a techno‐economical and sustainable solution for drinking water treatment to ensure the provision of safe drinking water. Moreover, the newer methodology can have the advantage of producing no harmful carcinogenic disinfection by‐products compared to chemical disinfection processes apart from sustainable alternative to chlorination.

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Performance evaluation and optimization of ZnO-PVP nanoparticles for photocatalytic wastewater treatment: Interactions between UV light intensity and nanoparticles dosage

Cited by 27 publications

References 36 publications

Enhanced antimicrobial efficacy of biogenic ZnO nanoparticles through UV-B activation: A novel approach for textile garment

Enhanced antimicrobial efficacy of biogenic ZnO nanoparticles through UV-B activation: A novel approach for textile garment

Polymer-Based Immobilized FePMo12O40@PVP Composite Materials for Photocatalytic RhB Degradation

Enhanced Disinfection Efficiency Using Cu Vortex Diode for Providing Safe Drinking Water: Devising Newer Methodologies

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