A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic water
Autor(a) principal: | |
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Data de Publicação: | 2010 |
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=S0104-66322010000100010 |
Resumo: | This work is concerned with optimizing the performance of the coagulation process in terms of the removal of intact cyanobacteria cells and saxitoxins (STX). The evaluation has been carried out through bench-scale jar tests to construct coagulation diagrams for aluminium sulphate, polyaluminium chloride (PACl) and ferric chloride. The test water was taken from a eutrophic surface source, collected at the inlet to the water treatment plant that supplies Ponta Grossa City, Brazil, at a time of high algal activity corresponding to a total of 108833 cells/mL of cyanobacteria. By constructing the coagulation diagram for turbidity, the optimal dose-pH conditions were used in subsequent tests involving both coagulation and sand filtration. In these tests the benefits of adding a cationic synthetic polymer and powdered activated carbon (PAC) to the overall treatment were investigated. From the results of the tests, the optimal dosages and pH for each coagulant, polymer and PAC were obtained corresponding to the lowest concentrations of cyanobacteria cells, STX and turbidity. |
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Brazilian Journal of Chemical Engineering |
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A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic waterAlumPAClFerric ChlorideCoagulationCyanobacteriaSaxitoxinThis work is concerned with optimizing the performance of the coagulation process in terms of the removal of intact cyanobacteria cells and saxitoxins (STX). The evaluation has been carried out through bench-scale jar tests to construct coagulation diagrams for aluminium sulphate, polyaluminium chloride (PACl) and ferric chloride. The test water was taken from a eutrophic surface source, collected at the inlet to the water treatment plant that supplies Ponta Grossa City, Brazil, at a time of high algal activity corresponding to a total of 108833 cells/mL of cyanobacteria. By constructing the coagulation diagram for turbidity, the optimal dose-pH conditions were used in subsequent tests involving both coagulation and sand filtration. In these tests the benefits of adding a cationic synthetic polymer and powdered activated carbon (PAC) to the overall treatment were investigated. From the results of the tests, the optimal dosages and pH for each coagulant, polymer and PAC were obtained corresponding to the lowest concentrations of cyanobacteria cells, STX and turbidity.Brazilian Society of Chemical Engineering2010-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322010000100010Brazilian Journal of Chemical Engineering v.27 n.1 2010reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322010000100010info:eu-repo/semantics/openAccessDe Julio,M.Fioravante,D. A.De Julio,T. S.Oroski,F. I.Graham,N. J. D.eng2010-04-14T00:00:00Zoai:scielo:S0104-66322010000100010Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2010-04-14T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic water |
title |
A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic water |
spellingShingle |
A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic water De Julio,M. Alum PACl Ferric Chloride Coagulation Cyanobacteria Saxitoxin |
title_short |
A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic water |
title_full |
A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic water |
title_fullStr |
A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic water |
title_full_unstemmed |
A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic water |
title_sort |
A methodology for optimising the removal of cyanobacteria cells from a brazilian eutrophic water |
author |
De Julio,M. |
author_facet |
De Julio,M. Fioravante,D. A. De Julio,T. S. Oroski,F. I. Graham,N. J. D. |
author_role |
author |
author2 |
Fioravante,D. A. De Julio,T. S. Oroski,F. I. Graham,N. J. D. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
De Julio,M. Fioravante,D. A. De Julio,T. S. Oroski,F. I. Graham,N. J. D. |
dc.subject.por.fl_str_mv |
Alum PACl Ferric Chloride Coagulation Cyanobacteria Saxitoxin |
topic |
Alum PACl Ferric Chloride Coagulation Cyanobacteria Saxitoxin |
description |
This work is concerned with optimizing the performance of the coagulation process in terms of the removal of intact cyanobacteria cells and saxitoxins (STX). The evaluation has been carried out through bench-scale jar tests to construct coagulation diagrams for aluminium sulphate, polyaluminium chloride (PACl) and ferric chloride. The test water was taken from a eutrophic surface source, collected at the inlet to the water treatment plant that supplies Ponta Grossa City, Brazil, at a time of high algal activity corresponding to a total of 108833 cells/mL of cyanobacteria. By constructing the coagulation diagram for turbidity, the optimal dose-pH conditions were used in subsequent tests involving both coagulation and sand filtration. In these tests the benefits of adding a cationic synthetic polymer and powdered activated carbon (PAC) to the overall treatment were investigated. From the results of the tests, the optimal dosages and pH for each coagulant, polymer and PAC were obtained corresponding to the lowest concentrations of cyanobacteria cells, STX and turbidity. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-03-01 |
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=S0104-66322010000100010 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322010000100010 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66322010000100010 |
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.27 n.1 2010 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_ |
1754213173091631104 |