Photocatalytic Degradation of 4-Chlorophenol Using Zero Valent Iron Activated Persulfate and Zero Valent Iron Activated Hydrogen Peroxide Processes under UV Irradiation: A Taguchi Experimental Design

4-chlorophenol (4-CP) is one of the seriously toxic chlorophenol compounds found in the effluent wastewater generated by oil refineries, pharmaceutical factories, and paper and leather producers which introduced into surface and ground water resources. This research aimed to study the feasibility of...

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Main Authors: Abdolmotaleb Seid-Mohammadi, Ghorban Asgari, Javad Faradmal, Mostafa Leili, Raheleh Amiri
Format: Article
Language:English
Published: Water and Wastewater Consulting Engineers Research Development 2019-05-01
Series:آب و فاضلاب
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Online Access:http://www.wwjournal.ir/article_81426_ac64ec74930d919286bd4929d577f646.pdf
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spelling doaj-5c20ab078d4b4a07ae56d4c6f7c850ca2021-03-02T09:26:13ZengWater and Wastewater Consulting Engineers Research Developmentآب و فاضلاب1024-59362383-09052019-05-01302769010.22093/wwj.2018.101512.251081426Photocatalytic Degradation of 4-Chlorophenol Using Zero Valent Iron Activated Persulfate and Zero Valent Iron Activated Hydrogen Peroxide Processes under UV Irradiation: A Taguchi Experimental DesignAbdolmotaleb Seid-Mohammadi0Ghorban Asgari1Javad Faradmal2Mostafa Leili3Raheleh Amiri4Assoc. Prof., Social Determinants of Health Research Center, Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, IranAssoc. Prof., Social Determinants of Health Research Center, Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, IranAssoc. Prof., Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, IranAssoc. Prof., Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, IranMSc in Environmental Health Engineering, Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran4-chlorophenol (4-CP) is one of the seriously toxic chlorophenol compounds found in the effluent wastewater generated by oil refineries, pharmaceutical factories, and paper and leather producers which introduced into surface and ground water resources. This research aimed to study the feasibility of nZVI nanoparticles in activation of H<sub>2</sub>O<sub>2</sub> and persulfate under UVA-LED irradiation based on Taguchi experimental design for 4-CP removal. This experimental study was conducted using a lab-scale batch reactor equipped with 18 ultraviolet light emitting diodes lamps with a wavelength of 390 nm. The effects of operating parameters such as pH of solution, contact time, dosage of nZVI, dosages of H<sub>2</sub>O<sub>2</sub> and persulfate and different initial 4-CP concentration were evaluted by difiend factor of 4*4 using Taghuchi L-16 orthogonal array. Based on the results of the Taguchi method, the optimum conditions for removal of 4-CP in nZVI activated persulfate process included the initial 4-CP concentration of 25 mg/L, pH=3, reaction time of 60 min, nZVI and persulafte respective dosages of 2 and 2 mM. The highest removal efficiency and S/N values for this process were 51.83% and 34.29%, respectively. Also, optimum conditions for removal of 4-CP in nZVI activated H<sub>2</sub>O<sub>2</sub> process were the initial 4-CP concentration of 25mg/L, pH=3, reaction time of 30 min, nZVI and H<sub>2</sub>O<sub>2</sub> dosages of 0.75 and 1 mM. In this condition, the highest removal efficiency and S/N values were 81.76% and 38.25%, respectively. In both processes in this case, under acidic conditions, an increase in the active catalyst (Fe<sup>2+</sup>) activated more and more oxidants (radical hydroxide and radical sulfate) in both reactants, resulting in better efficiency of processes in these conditions. UVA-LED/H<sub>2</sub>O<sub>2</sub>/nZVI process could serve as a new and feasible approach for the degradation of 4-CP as well as other organic contaminants containing wastewater due to high efficiency, low contact time and need to the lowest oxidants agents. UVA-LED/H<sub>2</sub>O<sub>2</sub>/nZVI process could serve as a new and feasible approach for the degradation of 4-CP as well as other organic contaminants containing in wastewater due to high efficiency, low contact time and need to the lowest oxidants agents.http://www.wwjournal.ir/article_81426_ac64ec74930d919286bd4929d577f646.pdfUVA-LED4-ChlorophenolActivationZerovalent IronTaguchi method
collection DOAJ
language English
format Article
sources DOAJ
author Abdolmotaleb Seid-Mohammadi
Ghorban Asgari
Javad Faradmal
Mostafa Leili
Raheleh Amiri
spellingShingle Abdolmotaleb Seid-Mohammadi
Ghorban Asgari
Javad Faradmal
Mostafa Leili
Raheleh Amiri
Photocatalytic Degradation of 4-Chlorophenol Using Zero Valent Iron Activated Persulfate and Zero Valent Iron Activated Hydrogen Peroxide Processes under UV Irradiation: A Taguchi Experimental Design
آب و فاضلاب
UVA-LED
4-Chlorophenol
Activation
Zerovalent Iron
Taguchi method
author_facet Abdolmotaleb Seid-Mohammadi
Ghorban Asgari
Javad Faradmal
Mostafa Leili
Raheleh Amiri
author_sort Abdolmotaleb Seid-Mohammadi
title Photocatalytic Degradation of 4-Chlorophenol Using Zero Valent Iron Activated Persulfate and Zero Valent Iron Activated Hydrogen Peroxide Processes under UV Irradiation: A Taguchi Experimental Design
title_short Photocatalytic Degradation of 4-Chlorophenol Using Zero Valent Iron Activated Persulfate and Zero Valent Iron Activated Hydrogen Peroxide Processes under UV Irradiation: A Taguchi Experimental Design
title_full Photocatalytic Degradation of 4-Chlorophenol Using Zero Valent Iron Activated Persulfate and Zero Valent Iron Activated Hydrogen Peroxide Processes under UV Irradiation: A Taguchi Experimental Design
title_fullStr Photocatalytic Degradation of 4-Chlorophenol Using Zero Valent Iron Activated Persulfate and Zero Valent Iron Activated Hydrogen Peroxide Processes under UV Irradiation: A Taguchi Experimental Design
title_full_unstemmed Photocatalytic Degradation of 4-Chlorophenol Using Zero Valent Iron Activated Persulfate and Zero Valent Iron Activated Hydrogen Peroxide Processes under UV Irradiation: A Taguchi Experimental Design
title_sort photocatalytic degradation of 4-chlorophenol using zero valent iron activated persulfate and zero valent iron activated hydrogen peroxide processes under uv irradiation: a taguchi experimental design
publisher Water and Wastewater Consulting Engineers Research Development
series آب و فاضلاب
issn 1024-5936
2383-0905
publishDate 2019-05-01
description 4-chlorophenol (4-CP) is one of the seriously toxic chlorophenol compounds found in the effluent wastewater generated by oil refineries, pharmaceutical factories, and paper and leather producers which introduced into surface and ground water resources. This research aimed to study the feasibility of nZVI nanoparticles in activation of H<sub>2</sub>O<sub>2</sub> and persulfate under UVA-LED irradiation based on Taguchi experimental design for 4-CP removal. This experimental study was conducted using a lab-scale batch reactor equipped with 18 ultraviolet light emitting diodes lamps with a wavelength of 390 nm. The effects of operating parameters such as pH of solution, contact time, dosage of nZVI, dosages of H<sub>2</sub>O<sub>2</sub> and persulfate and different initial 4-CP concentration were evaluted by difiend factor of 4*4 using Taghuchi L-16 orthogonal array. Based on the results of the Taguchi method, the optimum conditions for removal of 4-CP in nZVI activated persulfate process included the initial 4-CP concentration of 25 mg/L, pH=3, reaction time of 60 min, nZVI and persulafte respective dosages of 2 and 2 mM. The highest removal efficiency and S/N values for this process were 51.83% and 34.29%, respectively. Also, optimum conditions for removal of 4-CP in nZVI activated H<sub>2</sub>O<sub>2</sub> process were the initial 4-CP concentration of 25mg/L, pH=3, reaction time of 30 min, nZVI and H<sub>2</sub>O<sub>2</sub> dosages of 0.75 and 1 mM. In this condition, the highest removal efficiency and S/N values were 81.76% and 38.25%, respectively. In both processes in this case, under acidic conditions, an increase in the active catalyst (Fe<sup>2+</sup>) activated more and more oxidants (radical hydroxide and radical sulfate) in both reactants, resulting in better efficiency of processes in these conditions. UVA-LED/H<sub>2</sub>O<sub>2</sub>/nZVI process could serve as a new and feasible approach for the degradation of 4-CP as well as other organic contaminants containing wastewater due to high efficiency, low contact time and need to the lowest oxidants agents. UVA-LED/H<sub>2</sub>O<sub>2</sub>/nZVI process could serve as a new and feasible approach for the degradation of 4-CP as well as other organic contaminants containing in wastewater due to high efficiency, low contact time and need to the lowest oxidants agents.
topic UVA-LED
4-Chlorophenol
Activation
Zerovalent Iron
Taguchi method
url http://www.wwjournal.ir/article_81426_ac64ec74930d919286bd4929d577f646.pdf
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