Photocatalytic inactivation of Clostridium perfringens and coliphages in water

Detalhes bibliográficos
Autor(a) principal: Guimarães,J.R.
Data de Publicação: 2003
Outros Autores: Barretto,A.S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Chemical Engineering
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322003000400007
Resumo: This study presents results of the photocatalytic inactivation of two groups of microorganisms: spores of the anaerobic bacterium Clostridium perfringens and coliphage. A cylindrical reactor impregnated with titanium dioxide and irradiated with ultraviolet light (15 W) was used. Parameters such as color, turbidity, hydraulic detention time (HDT) and initial concentration of microorganisms were evaluated in relation to the efficiency of the inactivation process. According to the experiments with the bacterium C. perfringens, the reduction in number of microorganisms was higher than 98% after an irradiation time of 152 seconds, independent of color and turbidity. For solutions with low turbidities efficiency of the coliphage inactivation reached approximately 100% between 89 and 104 HDT, while this value was 98% for solutions with higher turbidities.
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spelling Photocatalytic inactivation of Clostridium perfringens and coliphages in waterphotocatalytic inactivationphotolytic inactivationClostridium perfringenscoliphageThis study presents results of the photocatalytic inactivation of two groups of microorganisms: spores of the anaerobic bacterium Clostridium perfringens and coliphage. A cylindrical reactor impregnated with titanium dioxide and irradiated with ultraviolet light (15 W) was used. Parameters such as color, turbidity, hydraulic detention time (HDT) and initial concentration of microorganisms were evaluated in relation to the efficiency of the inactivation process. According to the experiments with the bacterium C. perfringens, the reduction in number of microorganisms was higher than 98% after an irradiation time of 152 seconds, independent of color and turbidity. For solutions with low turbidities efficiency of the coliphage inactivation reached approximately 100% between 89 and 104 HDT, while this value was 98% for solutions with higher turbidities.Brazilian Society of Chemical Engineering2003-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322003000400007Brazilian Journal of Chemical Engineering v.20 n.4 2003reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322003000400007info:eu-repo/semantics/openAccessGuimarães,J.R.Barretto,A.S.eng2003-12-04T00:00:00Zoai:scielo:S0104-66322003000400007Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2003-12-04T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv Photocatalytic inactivation of Clostridium perfringens and coliphages in water
title Photocatalytic inactivation of Clostridium perfringens and coliphages in water
spellingShingle Photocatalytic inactivation of Clostridium perfringens and coliphages in water
Guimarães,J.R.
photocatalytic inactivation
photolytic inactivation
Clostridium perfringens
coliphage
title_short Photocatalytic inactivation of Clostridium perfringens and coliphages in water
title_full Photocatalytic inactivation of Clostridium perfringens and coliphages in water
title_fullStr Photocatalytic inactivation of Clostridium perfringens and coliphages in water
title_full_unstemmed Photocatalytic inactivation of Clostridium perfringens and coliphages in water
title_sort Photocatalytic inactivation of Clostridium perfringens and coliphages in water
author Guimarães,J.R.
author_facet Guimarães,J.R.
Barretto,A.S.
author_role author
author2 Barretto,A.S.
author2_role author
dc.contributor.author.fl_str_mv Guimarães,J.R.
Barretto,A.S.
dc.subject.por.fl_str_mv photocatalytic inactivation
photolytic inactivation
Clostridium perfringens
coliphage
topic photocatalytic inactivation
photolytic inactivation
Clostridium perfringens
coliphage
description This study presents results of the photocatalytic inactivation of two groups of microorganisms: spores of the anaerobic bacterium Clostridium perfringens and coliphage. A cylindrical reactor impregnated with titanium dioxide and irradiated with ultraviolet light (15 W) was used. Parameters such as color, turbidity, hydraulic detention time (HDT) and initial concentration of microorganisms were evaluated in relation to the efficiency of the inactivation process. According to the experiments with the bacterium C. perfringens, the reduction in number of microorganisms was higher than 98% after an irradiation time of 152 seconds, independent of color and turbidity. For solutions with low turbidities efficiency of the coliphage inactivation reached approximately 100% between 89 and 104 HDT, while this value was 98% for solutions with higher turbidities.
publishDate 2003
dc.date.none.fl_str_mv 2003-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322003000400007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322003000400007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-66322003000400007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
dc.source.none.fl_str_mv Brazilian Journal of Chemical Engineering v.20 n.4 2003
reponame:Brazilian Journal of Chemical Engineering
instname:Associação Brasileira de Engenharia Química (ABEQ)
instacron:ABEQ
instname_str Associação Brasileira de Engenharia Química (ABEQ)
instacron_str ABEQ
institution ABEQ
reponame_str Brazilian Journal of Chemical Engineering
collection Brazilian Journal of Chemical Engineering
repository.name.fl_str_mv Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)
repository.mail.fl_str_mv rgiudici@usp.br||rgiudici@usp.br
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