Effects of the fractal structure and size distribution of flocs on the removal of particulate matter
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/19443994.2015.1081833 http://hdl.handle.net/11449/172061 |
Resumo: | This study sought to evaluate the effect of form and particle size distribution of formed flocs during flocculation on the removal of particulate matter (PM) by settling. The understanding of the intrinsic processes of water treatment is fundamental for the improvement of these processes, and this understanding is often limited by the use of indirect measurements. For this reason, this study evaluated the relationships among the morphology, particle size distribution (PSD), and particle volume distribution of flocs formed with mean flocculation velocity gradients (Gf) from 20 to 60 s−1 and settling velocities from 0.5 to 5.0 cm s−1 at flocculation times (Tf) from 10 to 60 min. A correlation analysis of all of the parameters was performed to identify the most significant direct measurement for characterizing the removal of PM. Strong correlations among parameters were observed when considering the variation with Gf for a given Tf, and moderate correlations were observed when considering the variation with Tf for a given Gf. The strong correlations that resulted from the alteration of Gf were a consequence of the significant changes in the morphological characteristics, PSD, and PVD of the flocs. The lower strengths of the correlations with the variation in Tf can be explained by the rapid attainment of the equilibrium steady-state between aggregation and disaggregation forces. |
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Repositório Institucional da UNESP |
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Effects of the fractal structure and size distribution of flocs on the removal of particulate matterMorphologyParticle size distributionParticle volume distributionParticulate matterSettlingThis study sought to evaluate the effect of form and particle size distribution of formed flocs during flocculation on the removal of particulate matter (PM) by settling. The understanding of the intrinsic processes of water treatment is fundamental for the improvement of these processes, and this understanding is often limited by the use of indirect measurements. For this reason, this study evaluated the relationships among the morphology, particle size distribution (PSD), and particle volume distribution of flocs formed with mean flocculation velocity gradients (Gf) from 20 to 60 s−1 and settling velocities from 0.5 to 5.0 cm s−1 at flocculation times (Tf) from 10 to 60 min. A correlation analysis of all of the parameters was performed to identify the most significant direct measurement for characterizing the removal of PM. Strong correlations among parameters were observed when considering the variation with Gf for a given Tf, and moderate correlations were observed when considering the variation with Tf for a given Gf. The strong correlations that resulted from the alteration of Gf were a consequence of the significant changes in the morphological characteristics, PSD, and PVD of the flocs. The lower strengths of the correlations with the variation in Tf can be explained by the rapid attainment of the equilibrium steady-state between aggregation and disaggregation forces.LATARE DEPLAN Instituto de Geociências e Ciências Exatas UNESP—Univ. Estadual Paulista Campus de Rio Claro, Avenida 24-A, n° 1515, Bela VistaAeronautic Institute of Technology Civil Engineering Division (ITA—Instituto Tecnológico de Aeronáutica Divisão de Engenharia Civil) CTA—ITA—IEI, Praça Marechal Eduardo Gomes, 50, Vila das Acácias, São José dos CamposLATARE DEPLAN Instituto de Geociências e Ciências Exatas UNESP—Univ. Estadual Paulista Campus de Rio Claro, Avenida 24-A, n° 1515, Bela VistaUniversidade Estadual Paulista (Unesp)CTA—ITA—IEIde Oliveira, André Luiz [UNESP]Moreno, Pamela [UNESP]da Silva, Pedro Augusto Grava [UNESP]De Julio, MarceloMoruzzi, Rodrigo Braga [UNESP]2018-12-11T16:58:21Z2018-12-11T16:58:21Z2016-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article16721-16732application/pdfhttp://dx.doi.org/10.1080/19443994.2015.1081833Desalination and Water Treatment, v. 57, n. 36, p. 16721-16732, 2016.1944-39861944-3994http://hdl.handle.net/11449/17206110.1080/19443994.2015.10818332-s2.0-849413461532-s2.0-84941346153.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengDesalination and Water Treatment0,3980,398info:eu-repo/semantics/openAccess2023-11-17T06:11:08Zoai:repositorio.unesp.br:11449/172061Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:56:00.996472Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effects of the fractal structure and size distribution of flocs on the removal of particulate matter |
title |
Effects of the fractal structure and size distribution of flocs on the removal of particulate matter |
spellingShingle |
Effects of the fractal structure and size distribution of flocs on the removal of particulate matter de Oliveira, André Luiz [UNESP] Morphology Particle size distribution Particle volume distribution Particulate matter Settling |
title_short |
Effects of the fractal structure and size distribution of flocs on the removal of particulate matter |
title_full |
Effects of the fractal structure and size distribution of flocs on the removal of particulate matter |
title_fullStr |
Effects of the fractal structure and size distribution of flocs on the removal of particulate matter |
title_full_unstemmed |
Effects of the fractal structure and size distribution of flocs on the removal of particulate matter |
title_sort |
Effects of the fractal structure and size distribution of flocs on the removal of particulate matter |
author |
de Oliveira, André Luiz [UNESP] |
author_facet |
de Oliveira, André Luiz [UNESP] Moreno, Pamela [UNESP] da Silva, Pedro Augusto Grava [UNESP] De Julio, Marcelo Moruzzi, Rodrigo Braga [UNESP] |
author_role |
author |
author2 |
Moreno, Pamela [UNESP] da Silva, Pedro Augusto Grava [UNESP] De Julio, Marcelo Moruzzi, Rodrigo Braga [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) CTA—ITA—IEI |
dc.contributor.author.fl_str_mv |
de Oliveira, André Luiz [UNESP] Moreno, Pamela [UNESP] da Silva, Pedro Augusto Grava [UNESP] De Julio, Marcelo Moruzzi, Rodrigo Braga [UNESP] |
dc.subject.por.fl_str_mv |
Morphology Particle size distribution Particle volume distribution Particulate matter Settling |
topic |
Morphology Particle size distribution Particle volume distribution Particulate matter Settling |
description |
This study sought to evaluate the effect of form and particle size distribution of formed flocs during flocculation on the removal of particulate matter (PM) by settling. The understanding of the intrinsic processes of water treatment is fundamental for the improvement of these processes, and this understanding is often limited by the use of indirect measurements. For this reason, this study evaluated the relationships among the morphology, particle size distribution (PSD), and particle volume distribution of flocs formed with mean flocculation velocity gradients (Gf) from 20 to 60 s−1 and settling velocities from 0.5 to 5.0 cm s−1 at flocculation times (Tf) from 10 to 60 min. A correlation analysis of all of the parameters was performed to identify the most significant direct measurement for characterizing the removal of PM. Strong correlations among parameters were observed when considering the variation with Gf for a given Tf, and moderate correlations were observed when considering the variation with Tf for a given Gf. The strong correlations that resulted from the alteration of Gf were a consequence of the significant changes in the morphological characteristics, PSD, and PVD of the flocs. The lower strengths of the correlations with the variation in Tf can be explained by the rapid attainment of the equilibrium steady-state between aggregation and disaggregation forces. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-08-01 2018-12-11T16:58:21Z 2018-12-11T16:58:21Z |
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://dx.doi.org/10.1080/19443994.2015.1081833 Desalination and Water Treatment, v. 57, n. 36, p. 16721-16732, 2016. 1944-3986 1944-3994 http://hdl.handle.net/11449/172061 10.1080/19443994.2015.1081833 2-s2.0-84941346153 2-s2.0-84941346153.pdf |
url |
http://dx.doi.org/10.1080/19443994.2015.1081833 http://hdl.handle.net/11449/172061 |
identifier_str_mv |
Desalination and Water Treatment, v. 57, n. 36, p. 16721-16732, 2016. 1944-3986 1944-3994 10.1080/19443994.2015.1081833 2-s2.0-84941346153 2-s2.0-84941346153.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Desalination and Water Treatment 0,398 0,398 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
16721-16732 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128876762628096 |