Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation technique

Autores
Álvarez, Juan Martín; Seijas, Carlos Javier; Bianchi, Gustavo Luis
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The aim of this work was to evaluate the treatment of Volatile Organic Compounds (VOCs) released during the painting and drying process of an industrial paint by absorbing them in a water curtain and then oxidizing them with ozone. For this purpose, laboratory equipment was built consisting of a paint drying cabin and a bubble column where the VOCs were absorbed and treated. Tests were carried out with simulated effluents using distilled water and service water, to which 3.5 μg/L of formaldehyde, 11.6 mg/L of butyl acetate, 5.3 mg/L of ethanol and 5.6 mg/L of methyl ethyl ketone were added, according to data provided by the paint manufacturer; these tests were then repeated using the industrial paint currently used in the processes. The water saturation with the VOCs and the simultaneous treatment by means of ozone dosage was studied, taking the Chemical Oxygen Demand (COD) value as a treatment effectiveness parameter. VOC saturation is achieved for exposure times between 5 and 15 min in the aqueous effluent. The system of absorption and ozonation is effective for the elimination of the released VOCs, achieving a 94% reduction in the COD of the wastewater. Finally, it was observed that when O 3 is injected together with the paint, the reduction of COD in the effluent is favored due to a first instance of direct ozonation of the VOCs, and a second, slower indirect stage, generated by the presence of free radicals from the reaction of O 3 with water [hydroxyl radical (HO •), superoxide anion radical (O 2 –•) and hydroperoxyl radical (HO 2 •)] favored by the pH of the solution. The reaction kinetics of VOC oxidation is of first order.
Facultad de Ingeniería
Consejo Nacional de Investigaciones Científicas y Técnicas
Materia
Ingeniería Química
Volatile organic compounds
Catalytic ozone oxidation
Ozone oxidation
Advanced oxidation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/115079
Acceder
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network_name_str SEDICI (UNLP)
spelling Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation techniqueÁlvarez, Juan MartínSeijas, Carlos JavierBianchi, Gustavo LuisIngeniería QuímicaVolatile organic compoundsCatalytic ozone oxidationOzone oxidationAdvanced oxidationThe aim of this work was to evaluate the treatment of Volatile Organic Compounds (VOCs) released during the painting and drying process of an industrial paint by absorbing them in a water curtain and then oxidizing them with ozone. For this purpose, laboratory equipment was built consisting of a paint drying cabin and a bubble column where the VOCs were absorbed and treated. Tests were carried out with simulated effluents using distilled water and service water, to which 3.5 μg/L of formaldehyde, 11.6 mg/L of butyl acetate, 5.3 mg/L of ethanol and 5.6 mg/L of methyl ethyl ketone were added, according to data provided by the paint manufacturer; these tests were then repeated using the industrial paint currently used in the processes. The water saturation with the VOCs and the simultaneous treatment by means of ozone dosage was studied, taking the Chemical Oxygen Demand (COD) value as a treatment effectiveness parameter. VOC saturation is achieved for exposure times between 5 and 15 min in the aqueous effluent. The system of absorption and ozonation is effective for the elimination of the released VOCs, achieving a 94% reduction in the COD of the wastewater. Finally, it was observed that when O 3 is injected together with the paint, the reduction of COD in the effluent is favored due to a first instance of direct ozonation of the VOCs, and a second, slower indirect stage, generated by the presence of free radicals from the reaction of O 3 with water [hydroxyl radical (HO •), superoxide anion radical (O 2 –•) and hydroperoxyl radical (HO 2 •)] favored by the pH of the solution. The reaction kinetics of VOC oxidation is of first order.Facultad de IngenieríaConsejo Nacional de Investigaciones Científicas y Técnicas2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/115079enginfo:eu-repo/semantics/altIdentifier/issn/2666-7657info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envadv.2020.100017info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:58:58Zoai:sedici.unlp.edu.ar:10915/115079Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:58:58.777SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation technique
title Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation technique
spellingShingle Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation technique
Álvarez, Juan Martín
Ingeniería Química
Volatile organic compounds
Catalytic ozone oxidation
Ozone oxidation
Advanced oxidation
title_short Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation technique
title_full Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation technique
title_fullStr Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation technique
title_full_unstemmed Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation technique
title_sort Elimination of volatile organic compounds in paint drying by absorption reaction in water combined with the ozone oxidation technique
dc.creator.none.fl_str_mv Álvarez, Juan Martín
Seijas, Carlos Javier
Bianchi, Gustavo Luis
author Álvarez, Juan Martín
author_facet Álvarez, Juan Martín
Seijas, Carlos Javier
Bianchi, Gustavo Luis
author_role author
author2 Seijas, Carlos Javier
Bianchi, Gustavo Luis
author2_role author
author
dc.subject.none.fl_str_mv Ingeniería Química
Volatile organic compounds
Catalytic ozone oxidation
Ozone oxidation
Advanced oxidation
topic Ingeniería Química
Volatile organic compounds
Catalytic ozone oxidation
Ozone oxidation
Advanced oxidation
dc.description.none.fl_txt_mv The aim of this work was to evaluate the treatment of Volatile Organic Compounds (VOCs) released during the painting and drying process of an industrial paint by absorbing them in a water curtain and then oxidizing them with ozone. For this purpose, laboratory equipment was built consisting of a paint drying cabin and a bubble column where the VOCs were absorbed and treated. Tests were carried out with simulated effluents using distilled water and service water, to which 3.5 μg/L of formaldehyde, 11.6 mg/L of butyl acetate, 5.3 mg/L of ethanol and 5.6 mg/L of methyl ethyl ketone were added, according to data provided by the paint manufacturer; these tests were then repeated using the industrial paint currently used in the processes. The water saturation with the VOCs and the simultaneous treatment by means of ozone dosage was studied, taking the Chemical Oxygen Demand (COD) value as a treatment effectiveness parameter. VOC saturation is achieved for exposure times between 5 and 15 min in the aqueous effluent. The system of absorption and ozonation is effective for the elimination of the released VOCs, achieving a 94% reduction in the COD of the wastewater. Finally, it was observed that when O 3 is injected together with the paint, the reduction of COD in the effluent is favored due to a first instance of direct ozonation of the VOCs, and a second, slower indirect stage, generated by the presence of free radicals from the reaction of O 3 with water [hydroxyl radical (HO •), superoxide anion radical (O 2 –•) and hydroperoxyl radical (HO 2 •)] favored by the pH of the solution. The reaction kinetics of VOC oxidation is of first order.
Facultad de Ingeniería
Consejo Nacional de Investigaciones Científicas y Técnicas
description The aim of this work was to evaluate the treatment of Volatile Organic Compounds (VOCs) released during the painting and drying process of an industrial paint by absorbing them in a water curtain and then oxidizing them with ozone. For this purpose, laboratory equipment was built consisting of a paint drying cabin and a bubble column where the VOCs were absorbed and treated. Tests were carried out with simulated effluents using distilled water and service water, to which 3.5 μg/L of formaldehyde, 11.6 mg/L of butyl acetate, 5.3 mg/L of ethanol and 5.6 mg/L of methyl ethyl ketone were added, according to data provided by the paint manufacturer; these tests were then repeated using the industrial paint currently used in the processes. The water saturation with the VOCs and the simultaneous treatment by means of ozone dosage was studied, taking the Chemical Oxygen Demand (COD) value as a treatment effectiveness parameter. VOC saturation is achieved for exposure times between 5 and 15 min in the aqueous effluent. The system of absorption and ozonation is effective for the elimination of the released VOCs, achieving a 94% reduction in the COD of the wastewater. Finally, it was observed that when O 3 is injected together with the paint, the reduction of COD in the effluent is favored due to a first instance of direct ozonation of the VOCs, and a second, slower indirect stage, generated by the presence of free radicals from the reaction of O 3 with water [hydroxyl radical (HO •), superoxide anion radical (O 2 –•) and hydroperoxyl radical (HO 2 •)] favored by the pH of the solution. The reaction kinetics of VOC oxidation is of first order.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/115079
url http://sedici.unlp.edu.ar/handle/10915/115079
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2666-7657
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envadv.2020.100017
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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