Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS Technique

Detalhes bibliográficos
Autor(a) principal: Antunes, E.
Data de Publicação: 2010
Outros Autores: Ferreira, P., Rasteiro, M. G., Garcia, F. A. P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/37900
https://doi.org/10.1080/02726351.2010.504128
Resumo: Flocculation of precipitated calcium carbonate induced by polyelectrolytes was monitored using light diffraction scattering (LDS), which can supply the complete kinetic curve for the flocculation process. Cationic polyacrylamides of very high molecular weight with different charge densities and degrees of branching were tested. The effects of the charge density, degree of branching, and concentration of the flocculant on the flocculation process, as well as on floc resistance and reflocculation capacity, were investigated. Moreover, floc structure was evaluated through the calculation of the fractal dimension using the scattering matrix. The study demonstrates the benefit of using LDS for the evaluation, in a single test, of flocculant performance in the different stages of flocculation: aggregation, stabilization, deflocculation, and reflocculation.
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spelling Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS TechniqueFloc resistanceFlocculationFractal dimensionLight diffraction scattering (LDS)PolyelectrolytesReflocculation capacityFlocculation of precipitated calcium carbonate induced by polyelectrolytes was monitored using light diffraction scattering (LDS), which can supply the complete kinetic curve for the flocculation process. Cationic polyacrylamides of very high molecular weight with different charge densities and degrees of branching were tested. The effects of the charge density, degree of branching, and concentration of the flocculant on the flocculation process, as well as on floc resistance and reflocculation capacity, were investigated. Moreover, floc structure was evaluated through the calculation of the fractal dimension using the scattering matrix. The study demonstrates the benefit of using LDS for the evaluation, in a single test, of flocculant performance in the different stages of flocculation: aggregation, stabilization, deflocculation, and reflocculation.Taylor & Francis2010info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/37900http://hdl.handle.net/10316/37900https://doi.org/10.1080/02726351.2010.504128https://doi.org/10.1080/02726351.2010.504128engPrint ISSN: 0272-6351Online ISSN: 1548-0046http://dx.doi.org/10.1080/02726351.2010.504128metadata only accessinfo:eu-repo/semantics/openAccessAntunes, E.Ferreira, P.Rasteiro, M. G.Garcia, F. A. P.reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2021-06-29T10:03:12Zoai:estudogeral.uc.pt:10316/37900Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:59:22.319633Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS Technique
title Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS Technique
spellingShingle Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS Technique
Antunes, E.
Floc resistance
Flocculation
Fractal dimension
Light diffraction scattering (LDS)
Polyelectrolytes
Reflocculation capacity
title_short Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS Technique
title_full Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS Technique
title_fullStr Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS Technique
title_full_unstemmed Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS Technique
title_sort Evaluation of Polyelectrolyte Performance on PCC Flocculation Using the LDS Technique
author Antunes, E.
author_facet Antunes, E.
Ferreira, P.
Rasteiro, M. G.
Garcia, F. A. P.
author_role author
author2 Ferreira, P.
Rasteiro, M. G.
Garcia, F. A. P.
author2_role author
author
author
dc.contributor.author.fl_str_mv Antunes, E.
Ferreira, P.
Rasteiro, M. G.
Garcia, F. A. P.
dc.subject.por.fl_str_mv Floc resistance
Flocculation
Fractal dimension
Light diffraction scattering (LDS)
Polyelectrolytes
Reflocculation capacity
topic Floc resistance
Flocculation
Fractal dimension
Light diffraction scattering (LDS)
Polyelectrolytes
Reflocculation capacity
description Flocculation of precipitated calcium carbonate induced by polyelectrolytes was monitored using light diffraction scattering (LDS), which can supply the complete kinetic curve for the flocculation process. Cationic polyacrylamides of very high molecular weight with different charge densities and degrees of branching were tested. The effects of the charge density, degree of branching, and concentration of the flocculant on the flocculation process, as well as on floc resistance and reflocculation capacity, were investigated. Moreover, floc structure was evaluated through the calculation of the fractal dimension using the scattering matrix. The study demonstrates the benefit of using LDS for the evaluation, in a single test, of flocculant performance in the different stages of flocculation: aggregation, stabilization, deflocculation, and reflocculation.
publishDate 2010
dc.date.none.fl_str_mv 2010
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/37900
http://hdl.handle.net/10316/37900
https://doi.org/10.1080/02726351.2010.504128
https://doi.org/10.1080/02726351.2010.504128
url http://hdl.handle.net/10316/37900
https://doi.org/10.1080/02726351.2010.504128
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Print ISSN: 0272-6351
Online ISSN: 1548-0046
http://dx.doi.org/10.1080/02726351.2010.504128
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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