Purification of raw palygorskite: a comparative study involving different processes and dispersing agents

Detalhes bibliográficos
Autor(a) principal: Souza,G. P. M. de
Data de Publicação: 2021
Outros Autores: Silva,T. F. da, Albers,A. P. F., Quinteiro,E., Passador,F. R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000200131
Resumo: Abstract Palygorskite (Pal) is a natural clay mineral with fibrous morphology and high surface area. Depending on the geological origin, it presents impurities, such as quartz and carbonates, which can harm some of its properties. Therefore, this work seeks to define a viable methodology for the purification of a Brazilian Pal. Two types of mixing processes (sonication and milling) and two types of dispersing agents (sodium silicate and sodium polyacrylate) were investigated. In addition, a subsequent acid activation with hydrogen peroxide and sulfuric acid was performed for complete purification. The viability of the purification of Pal was confirmed by X-ray diffraction, X-ray fluorescence, and thermogravimetric analyses. The sonication mixture process and the use of sodium polyacrylate as a dispersing agent were more effective. In addition, BET analysis showed an increase in the surface area of Pal, and scanning electron microscopy confirmed the permanence of its fibrous morphology after the purification steps.
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spelling Purification of raw palygorskite: a comparative study involving different processes and dispersing agentspalygorskiteclayimpuritiespurificationAbstract Palygorskite (Pal) is a natural clay mineral with fibrous morphology and high surface area. Depending on the geological origin, it presents impurities, such as quartz and carbonates, which can harm some of its properties. Therefore, this work seeks to define a viable methodology for the purification of a Brazilian Pal. Two types of mixing processes (sonication and milling) and two types of dispersing agents (sodium silicate and sodium polyacrylate) were investigated. In addition, a subsequent acid activation with hydrogen peroxide and sulfuric acid was performed for complete purification. The viability of the purification of Pal was confirmed by X-ray diffraction, X-ray fluorescence, and thermogravimetric analyses. The sonication mixture process and the use of sodium polyacrylate as a dispersing agent were more effective. In addition, BET analysis showed an increase in the surface area of Pal, and scanning electron microscopy confirmed the permanence of its fibrous morphology after the purification steps.Associação Brasileira de Cerâmica2021-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000200131Cerâmica v.67 n.382 2021reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132021673823030info:eu-repo/semantics/openAccessSouza,G. P. M. deSilva,T. F. daAlbers,A. P. F.Quinteiro,E.Passador,F. R.eng2021-05-12T00:00:00Zoai:scielo:S0366-69132021000200131Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2021-05-12T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Purification of raw palygorskite: a comparative study involving different processes and dispersing agents
title Purification of raw palygorskite: a comparative study involving different processes and dispersing agents
spellingShingle Purification of raw palygorskite: a comparative study involving different processes and dispersing agents
Souza,G. P. M. de
palygorskite
clay
impurities
purification
title_short Purification of raw palygorskite: a comparative study involving different processes and dispersing agents
title_full Purification of raw palygorskite: a comparative study involving different processes and dispersing agents
title_fullStr Purification of raw palygorskite: a comparative study involving different processes and dispersing agents
title_full_unstemmed Purification of raw palygorskite: a comparative study involving different processes and dispersing agents
title_sort Purification of raw palygorskite: a comparative study involving different processes and dispersing agents
author Souza,G. P. M. de
author_facet Souza,G. P. M. de
Silva,T. F. da
Albers,A. P. F.
Quinteiro,E.
Passador,F. R.
author_role author
author2 Silva,T. F. da
Albers,A. P. F.
Quinteiro,E.
Passador,F. R.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Souza,G. P. M. de
Silva,T. F. da
Albers,A. P. F.
Quinteiro,E.
Passador,F. R.
dc.subject.por.fl_str_mv palygorskite
clay
impurities
purification
topic palygorskite
clay
impurities
purification
description Abstract Palygorskite (Pal) is a natural clay mineral with fibrous morphology and high surface area. Depending on the geological origin, it presents impurities, such as quartz and carbonates, which can harm some of its properties. Therefore, this work seeks to define a viable methodology for the purification of a Brazilian Pal. Two types of mixing processes (sonication and milling) and two types of dispersing agents (sodium silicate and sodium polyacrylate) were investigated. In addition, a subsequent acid activation with hydrogen peroxide and sulfuric acid was performed for complete purification. The viability of the purification of Pal was confirmed by X-ray diffraction, X-ray fluorescence, and thermogravimetric analyses. The sonication mixture process and the use of sodium polyacrylate as a dispersing agent were more effective. In addition, BET analysis showed an increase in the surface area of Pal, and scanning electron microscopy confirmed the permanence of its fibrous morphology after the purification steps.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-01
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=S0366-69132021000200131
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000200131
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132021673823030
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 Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.67 n.382 2021
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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