Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in water

This article presents the effect of inorganic salts MgSO4, NaCl and CaCO3 on the photocatalytic water disinfection. TiO2-P25 was used as a photocatalyst, and E. Coli was used as a contaminant. Disinfection tests were performed by controlling lighting of batch reactors loaded with contaminated water,...

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Autores:
Velasco, Edwing
Moreno, Andrea L
Giraldo, Sonia A
Tipo de recurso:
Fecha de publicación:
2013
Institución:
Universidad EAFIT
Repositorio:
Repositorio EAFIT
Idioma:
spa
OAI Identifier:
oai:repository.eafit.edu.co:10784/14417
Acceso en línea:
http://hdl.handle.net/10784/14417
Palabra clave:
Photocatalysis
Tio2
Disinfection
Inorganic Salts
Kinetic
Fotocatálisis
Tio2
Desinfección
Sales Inorgánicas
Cinética
Rights
License
Copyright (c) 2013 Edwing Velasco, Andrea L Moreno, Sonia A Giraldo
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spelling Medellín de: Lat: 06 15 00 N degrees minutes Lat: 6.2500 decimal degrees Long: 075 36 00 W degrees minutes Long: -75.6000 decimal degrees2013-03-222019-11-22T17:02:40Z2013-03-222019-11-22T17:02:40Z2256-43141794-9165http://hdl.handle.net/10784/1441710.17230/ingciecia.9.17.10This article presents the effect of inorganic salts MgSO4, NaCl and CaCO3 on the photocatalytic water disinfection. TiO2-P25 was used as a photocatalyst, and E. Coli was used as a contaminant. Disinfection tests were performed by controlling lighting of batch reactors loaded with contaminated water, salts and TiO2. The results of these tests were used to determine the kinetic parameters of a type Langmuir-Hinshelwood model. It was found that the salts have a strong influence on the photocatalytic inactivation of E. Coli and that each salt and its concentration affect disinfection differently in the following order: NaCl>CaCO3>>MgSO4. Additionally, the value of the calculated parameters was different for each salt, showing that the salts affect the process by several mechanisms related to the ion-bacteria interactions, ion-oxidizing species and ion-TiO2.Este artículo presenta el efecto de las sales inorgánicas MgSO4, NaCl y CaCO3 en la desinfección fotocatalítica del agua. TiO2-P25 se usó como fotocatalizador, y E. Coli se usó como contaminante. Las pruebas de desinfección se realizaron controlando la iluminación de los reactores discontinuos cargados con agua contaminada, sales y TiO2. Los resultados de estas pruebas se usaron para determinar los parámetros cinéticos de un modelo tipo Langmuir-Hinshelwood. Se encontró que las sales tienen una fuerte influencia en la inactivación fotocatalítica de E. Coli y que cada sal y su concentración afectan la desinfección de manera diferente en el siguiente orden: NaCl> CaCO3 >> MgSO4. Además, el valor de los parámetros calculados fue diferente para cada sal, lo que demuestra que las sales afectan el proceso por varios mecanismos relacionados con las interacciones ión-bacteria, especies oxidantes iónicas y ión-TiO2.application/pdfspaUniversidad EAFIThttp://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/1826http://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/1826Copyright (c) 2013 Edwing Velasco, Andrea L Moreno, Sonia A GiraldoAcceso abiertohttp://purl.org/coar/access_right/c_abf2instname:Universidad EAFITreponame:Repositorio Institucional Universidad EAFITIngeniería y Ciencia; Vol 9, No 17 (2013)Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in waterEfecto de la presencia de sales inorgánicas sobre la inactivación fotocatalítica de E. Coli en aguaarticleinfo:eu-repo/semantics/articlepublishedVersioninfo:eu-repo/semantics/publishedVersionArtículohttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1PhotocatalysisTio2DisinfectionInorganic SaltsKineticFotocatálisisTio2DesinfecciónSales InorgánicasCinéticaVelasco, EdwingMoreno, Andrea LGiraldo, Sonia AUniversidad Industrial de SantanderIngeniería y Ciencia917193208ing.cienc.ORIGINALdocument (13).pdfdocument (13).pdfTexto completo PDFapplication/pdf262704https://repository.eafit.edu.co/bitstreams/90d57795-b97d-489c-8902-df97e1fd2c21/download75b6befe61830d52c03a46a3d414e39dMD51articulo.htmlarticulo.htmlTexto completo HTMLtext/html374https://repository.eafit.edu.co/bitstreams/a302cd35-2415-46b7-b492-03aef06ee72e/download5b9462e0918083412bf36552a2b2d44aMD53THUMBNAILminaitura-ig_Mesa de trabajo 1.jpgminaitura-ig_Mesa de trabajo 1.jpgimage/jpeg265796https://repository.eafit.edu.co/bitstreams/a9a694ef-f4a2-4519-b09c-6e14c17543d3/downloadda9b21a5c7e00c7f1127cef8e97035e0MD5210784/14417oai:repository.eafit.edu.co:10784/144172024-02-01 11:34:23.923open.accesshttps://repository.eafit.edu.coRepositorio Institucional Universidad EAFITrepositorio@eafit.edu.co
dc.title.eng.fl_str_mv Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in water
dc.title.spa.fl_str_mv Efecto de la presencia de sales inorgánicas sobre la inactivación fotocatalítica de E. Coli en agua
title Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in water
spellingShingle Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in water
Photocatalysis
Tio2
Disinfection
Inorganic Salts
Kinetic
Fotocatálisis
Tio2
Desinfección
Sales Inorgánicas
Cinética
title_short Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in water
title_full Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in water
title_fullStr Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in water
title_full_unstemmed Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in water
title_sort Effect of the presence of inorganic salts on the photocatalytic inactivation of E. Coli in water
dc.creator.fl_str_mv Velasco, Edwing
Moreno, Andrea L
Giraldo, Sonia A
dc.contributor.author.spa.fl_str_mv Velasco, Edwing
Moreno, Andrea L
Giraldo, Sonia A
dc.contributor.affiliation.spa.fl_str_mv Universidad Industrial de Santander
dc.subject.keyword.eng.fl_str_mv Photocatalysis
Tio2
Disinfection
Inorganic Salts
Kinetic
topic Photocatalysis
Tio2
Disinfection
Inorganic Salts
Kinetic
Fotocatálisis
Tio2
Desinfección
Sales Inorgánicas
Cinética
dc.subject.keyword.spa.fl_str_mv Fotocatálisis
Tio2
Desinfección
Sales Inorgánicas
Cinética
description This article presents the effect of inorganic salts MgSO4, NaCl and CaCO3 on the photocatalytic water disinfection. TiO2-P25 was used as a photocatalyst, and E. Coli was used as a contaminant. Disinfection tests were performed by controlling lighting of batch reactors loaded with contaminated water, salts and TiO2. The results of these tests were used to determine the kinetic parameters of a type Langmuir-Hinshelwood model. It was found that the salts have a strong influence on the photocatalytic inactivation of E. Coli and that each salt and its concentration affect disinfection differently in the following order: NaCl>CaCO3>>MgSO4. Additionally, the value of the calculated parameters was different for each salt, showing that the salts affect the process by several mechanisms related to the ion-bacteria interactions, ion-oxidizing species and ion-TiO2.
publishDate 2013
dc.date.issued.none.fl_str_mv 2013-03-22
dc.date.available.none.fl_str_mv 2019-11-22T17:02:40Z
dc.date.accessioned.none.fl_str_mv 2019-11-22T17:02:40Z
dc.date.none.fl_str_mv 2013-03-22
dc.type.eng.fl_str_mv article
info:eu-repo/semantics/article
publishedVersion
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1794-9165
dc.identifier.uri.none.fl_str_mv http://hdl.handle.net/10784/14417
dc.identifier.doi.none.fl_str_mv 10.17230/ingciecia.9.17.10
identifier_str_mv 2256-4314
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dc.relation.uri.none.fl_str_mv http://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/1826
dc.rights.eng.fl_str_mv Copyright (c) 2013 Edwing Velasco, Andrea L Moreno, Sonia A Giraldo
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.local.spa.fl_str_mv Acceso abierto
rights_invalid_str_mv Copyright (c) 2013 Edwing Velasco, Andrea L Moreno, Sonia A Giraldo
Acceso abierto
http://purl.org/coar/access_right/c_abf2
dc.format.none.fl_str_mv application/pdf
dc.coverage.spatial.eng.fl_str_mv Medellín de: Lat: 06 15 00 N degrees minutes Lat: 6.2500 decimal degrees Long: 075 36 00 W degrees minutes Long: -75.6000 decimal degrees
dc.publisher.spa.fl_str_mv Universidad EAFIT
dc.source.none.fl_str_mv instname:Universidad EAFIT
reponame:Repositorio Institucional Universidad EAFIT
dc.source.spa.fl_str_mv Ingeniería y Ciencia; Vol 9, No 17 (2013)
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reponame_str Repositorio Institucional Universidad EAFIT
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