Electrochemical degradation of methylene blue dye using a graphite doped PbO2 anode: Optimization of operational parameters, degradation pathway and improving the biodegradability of textile wastewater

Arabian Journal of Chemistry, Год журнала: 2020, Номер 13(8), С. 6847 - 6864

Опубликована: Июль 9, 2020

An anodic oxidation process with graphite anode coated lead dioxide (G/β-PbO2) was optimized for the degradation of methylene blue (MB) and treatment real textile wastewater. The G/β-PbO2 prepared by electrochemical precipitation method. scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), diffraction (XRD) analyses confirmed successful coating substrate β-PbO2 film. effect four independent variables including pH, reaction time, current density, electrolyte concentration Na2SO4 on performance system modeled using a complete central composite design then genetic algorithm accuracy proposed quadratic model CCD p-value <0.0001 adj-R2 > 0.9. optimum conditions solution were obtained to be 5.75, 50 min, 10 mA/cm2, 78.8 mg/L, respectively. In these conditions, experimental removal efficiencies MB anodes 96.2% 68.3%, both well followed pseudo-first-order (R2 0.9). Cyclohexane, cyclohexa-2,5-dien-1-ylium, N-(sec-butyl) aniline most abundant intermediates identified LC-MS analysis. However, mineralization achieved in 60 min. successfully improved biodegradability wastewater (BOD/COD>0.4).

Язык: Английский

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Statistical modeling of phenolic compounds adsorption onto low-cost adsorbent prepared from aloe vera leaves wastes using CCD-RSM optimization: effect of parameters, isotherm, and kinetic studies

Biomass Conversion and Biorefinery, Год журнала: 2021, Номер 13(9), С. 7859 - 7873

Опубликована: Июль 5, 2021

Язык: Английский

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Application of a fluidized three-dimensional electrochemical reactor with Ti/SnO2–Sb/β-PbO2 anode and granular activated carbon particles for degradation and mineralization of 2,4-dichlorophenol: Process optimization and degradation pathway

Chemosphere, Год журнала: 2021, Номер 279, С. 130640 - 130640

Опубликована: Апрель 22, 2021

Язык: Английский

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Enhanced electrocatalytic degradation of bisphenol A by graphite/β-PbO2 anode in a three-dimensional electrochemical reactor

Journal of environmental chemical engineering, Год журнала: 2021, Номер 9(5), С. 106072 - 106072

Опубликована: Июль 18, 2021

Язык: Английский

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Improved degradation of diuron herbicide and pesticide wastewater treatment in a three-dimensional electrochemical reactor equipped with PbO2 anodes and granular activated carbon particle electrodes

Journal of Cleaner Production, Год журнала: 2021, Номер 322, С. 129094 - 129094

Опубликована: Сен. 21, 2021

Язык: Английский

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Synergistic degradation of acid blue 113 dye in a thermally activated persulfate (TAP)/ZnO-GAC oxidation system: Degradation pathway and application for real textile wastewater

Separation and Purification Technology, Год журнала: 2020, Номер 247, С. 116931 - 116931

Опубликована: Май 1, 2020

Язык: Английский

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Electrocatalytic degradation of diuron herbicide using three-dimensional carbon felt/β-PbO2 anode as a highly porous electrode: Influencing factors and degradation mechanisms

Chemosphere, Год журнала: 2021, Номер 276, С. 130141 - 130141

Опубликована: Март 2, 2021

Язык: Английский

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Highly effective degradation of 2,4-Dichlorophenoxyacetic acid herbicide in a three-dimensional sono-electro-Fenton (3D/SEF) system using powder activated carbon (PAC)/Fe3O4 as magnetic particle electrode

Journal of environmental chemical engineering, Год журнала: 2021, Номер 9(5), С. 105889 - 105889

Опубликована: Июнь 18, 2021

Язык: Английский

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Heat-activated persulfate for the degradation of micropollutants in water: A comprehensive review and future perspectives

Journal of Environmental Management, Год журнала: 2022, Номер 318, С. 115568 - 115568

Опубликована: Июнь 28, 2022

Язык: Английский

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Enhanced three-dimensional electrochemical process using magnetic recoverable of Fe3O4@GAC towards furfural degradation and mineralization

Arabian Journal of Chemistry, Год журнала: 2022, Номер 15(8), С. 103980 - 103980

Опубликована: Май 21, 2022

Furfural is as one of the major environmental pollutants in different industrial effluents such refinery and petrochemical, paper, cardboard oil refining. This toxic chemical irritant causes allergy for skin, eyes mucous membranes. study was developed to investigate efficiency a three-dimensional electrochemical process presence granular activated carbon magnetized with Fe3O4 (Fe3O4@GAC) particle electrodes removal furfural from aqueous solution. The structural morphological featured were determined via BET, VSM, XRD, FE-SEM FTIR techniques. experiments performed based on central composite design (CCD) role influencing factors including reaction time, pH, voltage initial concentrations at five levels evaluated. Quadratic model high correlation coefficient = 0.9872 (R2 (R2Adj 0.9724)) suggested experimental data analysis. performance oxidation towards degradation enhanced substantially after adding Fe3O4@GAC. highest (98.2%) achieved under optimal conditions (furfural: 201 mg/L, electrolysis time: 69 min, voltage: 19 V, pH: 5.0). Besides, over 78 74 % COD TOC removed by Fe3O4@GAC-based process, respectively. Based COD/TOC ratio average state (AOS) index, significant increase observed biodegradability intermediates treatment. Results showed that promising technology efficient furfural, even concentrations. Liquid chromatography–mass spectrometry (LC-MS) analysis pathway could be oxidized compounds smaller molecular masses, which eventually converted dioxide water.

Язык: Английский

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