Conversion of rice hull ash into soluble sodium silicate

Detalhes bibliográficos
Autor(a) principal: Foletto,Edson Luiz
Data de Publicação: 2006
Outros Autores: Gratieri,Ederson, Oliveira,Leonardo Hadlich de, Jahn,Sérgio Luiz
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000300014
Resumo: Sodium silicate is used as raw material for several purposes: silica gel production, preparation of catalysts, inks, load for medicines, concrete hardening accelerator, component of detergents and soaps, refractory constituent and deflocculant in clay slurries. In this work sodium silicate was produced by reacting rice hull ash (RHA) and aqueous sodium hydroxide, in open and closed reaction systems. The studied process variables were time, temperature of reaction and composition of the reaction mixture (expressed in terms of molar ratios NaOH/SiO2 and H2O/SiO2). About 90% silica conversion contained in the RHA into sodium silicate was achieved in closed system at 200 °C. The results showed that sodium silicate production from RHA can generate aggregate value to this residue.
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spelling Conversion of rice hull ash into soluble sodium silicatesodium silicatesilicate synthesisrice hull ashSodium silicate is used as raw material for several purposes: silica gel production, preparation of catalysts, inks, load for medicines, concrete hardening accelerator, component of detergents and soaps, refractory constituent and deflocculant in clay slurries. In this work sodium silicate was produced by reacting rice hull ash (RHA) and aqueous sodium hydroxide, in open and closed reaction systems. The studied process variables were time, temperature of reaction and composition of the reaction mixture (expressed in terms of molar ratios NaOH/SiO2 and H2O/SiO2). About 90% silica conversion contained in the RHA into sodium silicate was achieved in closed system at 200 °C. The results showed that sodium silicate production from RHA can generate aggregate value to this residue.ABM, ABC, ABPol2006-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000300014Materials Research v.9 n.3 2006reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392006000300014info:eu-repo/semantics/openAccessFoletto,Edson LuizGratieri,EdersonOliveira,Leonardo Hadlich deJahn,Sérgio Luizeng2006-10-19T00:00:00Zoai:scielo:S1516-14392006000300014Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2006-10-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Conversion of rice hull ash into soluble sodium silicate
title Conversion of rice hull ash into soluble sodium silicate
spellingShingle Conversion of rice hull ash into soluble sodium silicate
Foletto,Edson Luiz
sodium silicate
silicate synthesis
rice hull ash
title_short Conversion of rice hull ash into soluble sodium silicate
title_full Conversion of rice hull ash into soluble sodium silicate
title_fullStr Conversion of rice hull ash into soluble sodium silicate
title_full_unstemmed Conversion of rice hull ash into soluble sodium silicate
title_sort Conversion of rice hull ash into soluble sodium silicate
author Foletto,Edson Luiz
author_facet Foletto,Edson Luiz
Gratieri,Ederson
Oliveira,Leonardo Hadlich de
Jahn,Sérgio Luiz
author_role author
author2 Gratieri,Ederson
Oliveira,Leonardo Hadlich de
Jahn,Sérgio Luiz
author2_role author
author
author
dc.contributor.author.fl_str_mv Foletto,Edson Luiz
Gratieri,Ederson
Oliveira,Leonardo Hadlich de
Jahn,Sérgio Luiz
dc.subject.por.fl_str_mv sodium silicate
silicate synthesis
rice hull ash
topic sodium silicate
silicate synthesis
rice hull ash
description Sodium silicate is used as raw material for several purposes: silica gel production, preparation of catalysts, inks, load for medicines, concrete hardening accelerator, component of detergents and soaps, refractory constituent and deflocculant in clay slurries. In this work sodium silicate was produced by reacting rice hull ash (RHA) and aqueous sodium hydroxide, in open and closed reaction systems. The studied process variables were time, temperature of reaction and composition of the reaction mixture (expressed in terms of molar ratios NaOH/SiO2 and H2O/SiO2). About 90% silica conversion contained in the RHA into sodium silicate was achieved in closed system at 200 °C. The results showed that sodium silicate production from RHA can generate aggregate value to this residue.
publishDate 2006
dc.date.none.fl_str_mv 2006-09-01
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=S1516-14392006000300014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000300014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392006000300014
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 ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.9 n.3 2006
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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