Flocculation of fine fluorite particles with Corynebacterium xerosis

Detalhes bibliográficos
Autor(a) principal: Haas,Sandra R.
Data de Publicação: 1999
Outros Autores: Nascimento,Fábio R., Schneider,Ivo André H., Gaylarde,Christine
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista de Microbiologia
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300007
Resumo: The treatment of fine particles dispersed in liquids is common in several industries and especially important in mineral processing. The efficiency of settling operations can be substantially increased by flocculation. The aim of this work was to study the flocculation of fine fluorite particles by the bacterium Corynebacterium xerosis. Flocculation tests, microelectrophoresis measurements and optical microscopy were used to evaluate flocculation. The results showed that C. xerosis cells adhere to the fluorite surfaces promoting the aggregation of the particles. High quality flocs can be obtained rapidly at pH 7.0 using a cell concentration of 40 mg/l, considerably lower than previously reported in the literature. The results are discussed with reference to the surface characteristics of the mineral and of the microorganism.
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spelling Flocculation of fine fluorite particles with Corynebacterium xerosisadhesionCorynebacterium xerosisflocculationfluoriteThe treatment of fine particles dispersed in liquids is common in several industries and especially important in mineral processing. The efficiency of settling operations can be substantially increased by flocculation. The aim of this work was to study the flocculation of fine fluorite particles by the bacterium Corynebacterium xerosis. Flocculation tests, microelectrophoresis measurements and optical microscopy were used to evaluate flocculation. The results showed that C. xerosis cells adhere to the fluorite surfaces promoting the aggregation of the particles. High quality flocs can be obtained rapidly at pH 7.0 using a cell concentration of 40 mg/l, considerably lower than previously reported in the literature. The results are discussed with reference to the surface characteristics of the mineral and of the microorganism.Sociedade Brasileira de Microbiologia1999-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300007Revista de Microbiologia v.30 n.3 1999reponame:Revista de Microbiologiainstname:Sociedade Brasileira de Microbiologia (SBM)instacron:SBM10.1590/S0001-37141999000300007info:eu-repo/semantics/openAccessHaas,Sandra R.Nascimento,Fábio R.Schneider,Ivo André H.Gaylarde,Christineeng2000-02-03T00:00:00Zoai:scielo:S0001-37141999000300007Revistahttps://www.scielo.br/j/rm/ONGhttps://old.scielo.br/oai/scielo-oai.phpbjm@sbmicrobiologia.org.br||revmicro@icb.usp.br0001-37140001-3714opendoar:2000-02-03T00:00Revista de Microbiologia - Sociedade Brasileira de Microbiologia (SBM)false
dc.title.none.fl_str_mv Flocculation of fine fluorite particles with Corynebacterium xerosis
title Flocculation of fine fluorite particles with Corynebacterium xerosis
spellingShingle Flocculation of fine fluorite particles with Corynebacterium xerosis
Haas,Sandra R.
adhesion
Corynebacterium xerosis
flocculation
fluorite
title_short Flocculation of fine fluorite particles with Corynebacterium xerosis
title_full Flocculation of fine fluorite particles with Corynebacterium xerosis
title_fullStr Flocculation of fine fluorite particles with Corynebacterium xerosis
title_full_unstemmed Flocculation of fine fluorite particles with Corynebacterium xerosis
title_sort Flocculation of fine fluorite particles with Corynebacterium xerosis
author Haas,Sandra R.
author_facet Haas,Sandra R.
Nascimento,Fábio R.
Schneider,Ivo André H.
Gaylarde,Christine
author_role author
author2 Nascimento,Fábio R.
Schneider,Ivo André H.
Gaylarde,Christine
author2_role author
author
author
dc.contributor.author.fl_str_mv Haas,Sandra R.
Nascimento,Fábio R.
Schneider,Ivo André H.
Gaylarde,Christine
dc.subject.por.fl_str_mv adhesion
Corynebacterium xerosis
flocculation
fluorite
topic adhesion
Corynebacterium xerosis
flocculation
fluorite
description The treatment of fine particles dispersed in liquids is common in several industries and especially important in mineral processing. The efficiency of settling operations can be substantially increased by flocculation. The aim of this work was to study the flocculation of fine fluorite particles by the bacterium Corynebacterium xerosis. Flocculation tests, microelectrophoresis measurements and optical microscopy were used to evaluate flocculation. The results showed that C. xerosis cells adhere to the fluorite surfaces promoting the aggregation of the particles. High quality flocs can be obtained rapidly at pH 7.0 using a cell concentration of 40 mg/l, considerably lower than previously reported in the literature. The results are discussed with reference to the surface characteristics of the mineral and of the microorganism.
publishDate 1999
dc.date.none.fl_str_mv 1999-07-01
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=S0001-37141999000300007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0001-37141999000300007
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 Sociedade Brasileira de Microbiologia
publisher.none.fl_str_mv Sociedade Brasileira de Microbiologia
dc.source.none.fl_str_mv Revista de Microbiologia v.30 n.3 1999
reponame:Revista de Microbiologia
instname:Sociedade Brasileira de Microbiologia (SBM)
instacron:SBM
instname_str Sociedade Brasileira de Microbiologia (SBM)
instacron_str SBM
institution SBM
reponame_str Revista de Microbiologia
collection Revista de Microbiologia
repository.name.fl_str_mv Revista de Microbiologia - Sociedade Brasileira de Microbiologia (SBM)
repository.mail.fl_str_mv bjm@sbmicrobiologia.org.br||revmicro@icb.usp.br
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