Purification of Textile Effluents Containing C.I. Acid Violet 1: Adsorptive Removal versus Hydrogen Peroxide and Peracetic Acid Based Advanced Oxidation

Textile effluent containing azo dyes such as C.I. Acid Violet 1 (AV1) can be degraded to toxic aromatic amines in the environment. Thus, there is a legitimate need to treat such effluents before they are discharged to surface waters. Two methods were proposed to remove AV1 from aqueous solutions: ad...

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Autores principales:	Monika Wawrzkiewicz, Urszula Kotowska, Aneta Sokół
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dye anion exchanger textile effluents adsorption advanced oxidation hydrogen peroxide Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/19b50de4d98645e3813bb356a506fdad
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spelling	oai:doaj.org-article:19b50de4d98645e3813bb356a506fdad2021-11-25T18:50:21ZPurification of Textile Effluents Containing C.I. Acid Violet 1: Adsorptive Removal versus Hydrogen Peroxide and Peracetic Acid Based Advanced Oxidation10.3390/pr91119112227-9717https://doaj.org/article/19b50de4d98645e3813bb356a506fdad2021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1911https://doaj.org/toc/2227-9717Textile effluent containing azo dyes such as C.I. Acid Violet 1 (AV1) can be degraded to toxic aromatic amines in the environment. Thus, there is a legitimate need to treat such effluents before they are discharged to surface waters. Two methods were proposed to remove AV1 from aqueous solutions: adsorption and advanced oxidation processes (AOPs). The sorption capacity of the strongly basic anion exchanger Purolite A520E of the polystyrene matrix determined from the Langmuir isotherm model was found to be 835 mg/g, while that of Lewatit S5428 of the polyacrylamide matrix Freundlich model seems to be more appropriate for describing the experimental data. The pseudo-second-order kinetic model and external diffusion are the rate limiting steps of adsorption. The removal efficiency of AV1 by the anion exchangers was higher than 99% after 40 min of phase contact time. AOPs involved the usage of hydrogen peroxide and peracetic acid (PAA) as oxidizing agents, while Fe<sup>2+</sup> and simulated sunlight were used as oxidizing activators. AV1 oxidation followed the pseudo-first-order kinetics, and the systems with the highest values of the rate constants turned out to be those in which Fe<sup>2+</sup> was present. The efficiency of oxidation measured by the degree of decolorization in the systems with Fe<sup>2+</sup> was higher than 99% after 10–60 min. AV1 mineralization was slower, but after 120 min of oxidation it was higher than 98% in the H<sub>2</sub>O<sub>2</sub>/Fe<sup>2+</sup>, PAA/Fe<sup>2+</sup> and PAA/Fe<sup>2+</sup>/sunlight systems.Monika WawrzkiewiczUrszula KotowskaAneta SokółMDPI AGarticledyeanion exchangertextile effluentsadsorptionadvanced oxidationhydrogen peroxideChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1911, p 1911 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dye anion exchanger textile effluents adsorption advanced oxidation hydrogen peroxide Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	dye anion exchanger textile effluents adsorption advanced oxidation hydrogen peroxide Chemical technology TP1-1185 Chemistry QD1-999 Monika Wawrzkiewicz Urszula Kotowska Aneta Sokół Purification of Textile Effluents Containing C.I. Acid Violet 1: Adsorptive Removal versus Hydrogen Peroxide and Peracetic Acid Based Advanced Oxidation
description	Textile effluent containing azo dyes such as C.I. Acid Violet 1 (AV1) can be degraded to toxic aromatic amines in the environment. Thus, there is a legitimate need to treat such effluents before they are discharged to surface waters. Two methods were proposed to remove AV1 from aqueous solutions: adsorption and advanced oxidation processes (AOPs). The sorption capacity of the strongly basic anion exchanger Purolite A520E of the polystyrene matrix determined from the Langmuir isotherm model was found to be 835 mg/g, while that of Lewatit S5428 of the polyacrylamide matrix Freundlich model seems to be more appropriate for describing the experimental data. The pseudo-second-order kinetic model and external diffusion are the rate limiting steps of adsorption. The removal efficiency of AV1 by the anion exchangers was higher than 99% after 40 min of phase contact time. AOPs involved the usage of hydrogen peroxide and peracetic acid (PAA) as oxidizing agents, while Fe<sup>2+</sup> and simulated sunlight were used as oxidizing activators. AV1 oxidation followed the pseudo-first-order kinetics, and the systems with the highest values of the rate constants turned out to be those in which Fe<sup>2+</sup> was present. The efficiency of oxidation measured by the degree of decolorization in the systems with Fe<sup>2+</sup> was higher than 99% after 10–60 min. AV1 mineralization was slower, but after 120 min of oxidation it was higher than 98% in the H<sub>2</sub>O<sub>2</sub>/Fe<sup>2+</sup>, PAA/Fe<sup>2+</sup> and PAA/Fe<sup>2+</sup>/sunlight systems.
format	article
author	Monika Wawrzkiewicz Urszula Kotowska Aneta Sokół
author_facet	Monika Wawrzkiewicz Urszula Kotowska Aneta Sokół
author_sort	Monika Wawrzkiewicz
title	Purification of Textile Effluents Containing C.I. Acid Violet 1: Adsorptive Removal versus Hydrogen Peroxide and Peracetic Acid Based Advanced Oxidation
title_short	Purification of Textile Effluents Containing C.I. Acid Violet 1: Adsorptive Removal versus Hydrogen Peroxide and Peracetic Acid Based Advanced Oxidation
title_full	Purification of Textile Effluents Containing C.I. Acid Violet 1: Adsorptive Removal versus Hydrogen Peroxide and Peracetic Acid Based Advanced Oxidation
title_fullStr	Purification of Textile Effluents Containing C.I. Acid Violet 1: Adsorptive Removal versus Hydrogen Peroxide and Peracetic Acid Based Advanced Oxidation
title_full_unstemmed	Purification of Textile Effluents Containing C.I. Acid Violet 1: Adsorptive Removal versus Hydrogen Peroxide and Peracetic Acid Based Advanced Oxidation
title_sort	purification of textile effluents containing c.i. acid violet 1: adsorptive removal versus hydrogen peroxide and peracetic acid based advanced oxidation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/19b50de4d98645e3813bb356a506fdad
work_keys_str_mv	AT monikawawrzkiewicz purificationoftextileeffluentscontainingciacidviolet1adsorptiveremovalversushydrogenperoxideandperaceticacidbasedadvancedoxidation AT urszulakotowska purificationoftextileeffluentscontainingciacidviolet1adsorptiveremovalversushydrogenperoxideandperaceticacidbasedadvancedoxidation AT anetasokoł purificationoftextileeffluentscontainingciacidviolet1adsorptiveremovalversushydrogenperoxideandperaceticacidbasedadvancedoxidation
_version_	1718410635027415040

Purification of Textile Effluents Containing C.I. Acid Violet 1: Adsorptive Removal versus Hydrogen Peroxide and Peracetic Acid Based Advanced Oxidation

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