Effects of the fractal structure and size distribution of flocs on the removal of particulate matter

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dc.contributor.authorde Oliveira, André Luiz [UNESP]
dc.contributor.authorMoreno, Pamela [UNESP]
dc.contributor.authorda Silva, Pedro Augusto Grava [UNESP]
dc.contributor.authorDe Julio, Marcelo
dc.contributor.authorMoruzzi, Rodrigo Braga [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCTA—ITA—IEI
dc.date.accessioned2018-12-11T16:58:21Z
dc.date.available2018-12-11T16:58:21Z
dc.date.issued2016-08-01
dc.description.abstractThis 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.en
dc.description.affiliationLATARE DEPLAN Instituto de Geociências e Ciências Exatas UNESP—Univ. Estadual Paulista Campus de Rio Claro, Avenida 24-A, n° 1515, Bela Vista
dc.description.affiliationAeronautic 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 Campos
dc.description.affiliationUnespLATARE DEPLAN Instituto de Geociências e Ciências Exatas UNESP—Univ. Estadual Paulista Campus de Rio Claro, Avenida 24-A, n° 1515, Bela Vista
dc.format.extent16721-16732
dc.identifierhttp://dx.doi.org/10.1080/19443994.2015.1081833
dc.identifier.citationDesalination and Water Treatment, v. 57, n. 36, p. 16721-16732, 2016.
dc.identifier.doi10.1080/19443994.2015.1081833
dc.identifier.file2-s2.0-84941346153.pdf
dc.identifier.issn1944-3986
dc.identifier.issn1944-3994
dc.identifier.scopus2-s2.0-84941346153
dc.identifier.urihttp://hdl.handle.net/11449/172061
dc.language.isoeng
dc.relation.ispartofDesalination and Water Treatment
dc.relation.ispartofsjr0,398
dc.relation.ispartofsjr0,398
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectMorphology
dc.subjectParticle size distribution
dc.subjectParticle volume distribution
dc.subjectParticulate matter
dc.subjectSettling
dc.titleEffects of the fractal structure and size distribution of flocs on the removal of particulate matteren
dc.typeArtigo

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