Photocatalytic inactivation of Clostridium perfringens and coliphages in water
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | |
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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Brazilian Journal of Chemical Engineering |
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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 |
_version_ |
1754213171506184192 |