Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/30713
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Rasteiro, Maria Graça | - |
dc.contributor.author | Ferreira, Paulo J. | - |
dc.contributor.author | Wandrey, Christine | - |
dc.contributor.author | Hunkeler, David | - |
dc.contributor.author | Garcia, Fernando A. | - |
dc.contributor.author | Ahmadloo, Hamideh | - |
dc.contributor.author | Pinheiro, Ineide | - |
dc.date.accessioned | 2016-02-26T17:46:21Z | - |
dc.date.available | 2016-02-26T17:46:21Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | RASTEIRO, Maria G.; PINHEIRO, Ineide; FERREIRA, Paulo J.; GARCIA, Fernando A.; WANDREY, Christine; AHMADLOO, Hamideh; HUNKELER, David - Correlating aggregates structure with PEL characteristics using an experimental design methodology. "Procedia Engineering". 102 (2015), 1697–1706. Disponível na WWW em: <http://hdl.handle.net/10316/30713>. | por |
dc.identifier.issn | 1877-7058 | - |
dc.identifier.uri | https://hdl.handle.net/10316/30713 | - |
dc.description.abstract | Aggregation of particles is fundamental for improving the performance of many solid/liquid processes. Aggregation can be induced by different means, one of the most common being based on the addition of polymeric additives, namely polyelectrolytes (PEL). In this work we have studied the flocculation of precipitated calcium carbonate (PCC), used as filler in papermaking, induced by a range of cationic polyacrylamides with different structures, varying in molar mass and degree of branching. The flocculation process was monitored continuously using the LDS technique. Using an experimental design strategy it was possible to produce a model which allows us to relate the aggregates structure, described by the scattering exponent (SE), with the PEL characteristics and concentration (R2 around 79%). The Partial Least Squares (PLS) regression method was selected to perform the regression, given the significant collinearity among the input variables. The results obtained lead us to conclude that the polymer intrinsic viscosity (related with the PEL molar mass and charge density, and supplying information about the volume of the polymer molecule in the solution) and the degree of branching, are the parameters with a stronger influence on the resulting flocs structure. The PLS model developed was successfully validated using an independent data set, which provides confidence on its consistency and prediction accuracy. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier | por |
dc.relation | PEst/C/EQB/UI0102/2013 | por |
dc.rights | openAccess | por |
dc.subject | Flocculation | por |
dc.subject | Polyelectrolytes | por |
dc.subject | LDS | por |
dc.subject | Scattering exponent | por |
dc.title | Correlating Aggregates Structure with PEL Characteristics Using an Experimental Design Methodology | por |
dc.type | article | por |
degois.publication.firstPage | 1697 | por |
degois.publication.lastPage | 1706 | por |
dc.relation.publisherversion | 10.1016/j.proeng.2015.01.305 | por |
dc.peerreviewed | Yes | por |
dc.identifier.doi | 10.1016/j.proeng.2015.01.305 | - |
degois.publication.volume | 102 | por |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.author.researchunit | CIEPQPF – Chemical Process Engineering and Forest Products Research Centre | - |
crisitem.author.researchunit | CIEPQPF – Chemical Process Engineering and Forest Products Research Centre | - |
crisitem.author.researchunit | CIEPQPF – Chemical Process Engineering and Forest Products Research Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0001-6084-4553 | - |
crisitem.author.orcid | 0000-0002-4503-6811 | - |
crisitem.author.orcid | 0000-0002-7759-4818 | - |
Appears in Collections: | FCTUC Eng.Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Correlating Aggregates Structure with PEL Characteristics Using an Experimental Design Methodology.pdf | 413.61 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
2
checked on Sep 23, 2024
WEB OF SCIENCETM
Citations
2
checked on Oct 2, 2024
Page view(s) 50
530
checked on Oct 1, 2024
Download(s) 20
921
checked on Oct 1, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.