STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL

Detalhes bibliográficos
Autor(a) principal: DARIVA,Cláudio
Data de Publicação: 1997
Outros Autores: OLIVEIRA,José Vladimir, PINTO,José C., VALE,Maria G., CARAMÃO,Elina B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Food Science and Technology (Campinas)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611997000400032
Resumo: The influence of some process variables on the productivity of the fractions (liquid yield times fraction percent) obtained from SCFE of a Brazilian mineral coal using isopropanol and ethanol as primary solvents is analyzed using statistical techniques. A full factorial 23 experimental design was adopted to investigate the effects of process variables (temperature, pressure and cosolvent concentration) on the extraction products. The extracts were analyzed by the Preparative Liquid Chromatography-8 fractions method (PLC-8), a reliable, non destructive solvent fractionation method, especially developed for coal-derived liquids. Empirical statistical modeling was carried out in order to reproduce the experimental data. Correlations obtained were always greater than 0.98. Four specific process criteria were used to allow process optimization. Results obtained show that it is not possible to maximize both extract productivity and purity (through the minimization of heavy fraction content) simultaneously by manipulating the mentioned process variables.
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spelling STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COALStatistical analysisSCFEproductivityPLC-8 characterizationThe influence of some process variables on the productivity of the fractions (liquid yield times fraction percent) obtained from SCFE of a Brazilian mineral coal using isopropanol and ethanol as primary solvents is analyzed using statistical techniques. A full factorial 23 experimental design was adopted to investigate the effects of process variables (temperature, pressure and cosolvent concentration) on the extraction products. The extracts were analyzed by the Preparative Liquid Chromatography-8 fractions method (PLC-8), a reliable, non destructive solvent fractionation method, especially developed for coal-derived liquids. Empirical statistical modeling was carried out in order to reproduce the experimental data. Correlations obtained were always greater than 0.98. Four specific process criteria were used to allow process optimization. Results obtained show that it is not possible to maximize both extract productivity and purity (through the minimization of heavy fraction content) simultaneously by manipulating the mentioned process variables.Sociedade Brasileira de Ciência e Tecnologia de Alimentos1997-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611997000400032Food Science and Technology v.17 n.4 1997reponame:Food Science and Technology (Campinas)instname:Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA)instacron:SBCTA10.1590/S0101-20611997000400032info:eu-repo/semantics/openAccessDARIVA,CláudioOLIVEIRA,José VladimirPINTO,José C.VALE,Maria G.CARAMÃO,Elina B.eng1998-12-17T00:00:00Zoai:scielo:S0101-20611997000400032Revistahttp://www.scielo.br/ctaONGhttps://old.scielo.br/oai/scielo-oai.php||revista@sbcta.org.br1678-457X0101-2061opendoar:1998-12-17T00:00Food Science and Technology (Campinas) - Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA)false
dc.title.none.fl_str_mv STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL
title STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL
spellingShingle STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL
DARIVA,Cláudio
Statistical analysis
SCFE
productivity
PLC-8 characterization
title_short STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL
title_full STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL
title_fullStr STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL
title_full_unstemmed STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL
title_sort STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL
author DARIVA,Cláudio
author_facet DARIVA,Cláudio
OLIVEIRA,José Vladimir
PINTO,José C.
VALE,Maria G.
CARAMÃO,Elina B.
author_role author
author2 OLIVEIRA,José Vladimir
PINTO,José C.
VALE,Maria G.
CARAMÃO,Elina B.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv DARIVA,Cláudio
OLIVEIRA,José Vladimir
PINTO,José C.
VALE,Maria G.
CARAMÃO,Elina B.
dc.subject.por.fl_str_mv Statistical analysis
SCFE
productivity
PLC-8 characterization
topic Statistical analysis
SCFE
productivity
PLC-8 characterization
description The influence of some process variables on the productivity of the fractions (liquid yield times fraction percent) obtained from SCFE of a Brazilian mineral coal using isopropanol and ethanol as primary solvents is analyzed using statistical techniques. A full factorial 23 experimental design was adopted to investigate the effects of process variables (temperature, pressure and cosolvent concentration) on the extraction products. The extracts were analyzed by the Preparative Liquid Chromatography-8 fractions method (PLC-8), a reliable, non destructive solvent fractionation method, especially developed for coal-derived liquids. Empirical statistical modeling was carried out in order to reproduce the experimental data. Correlations obtained were always greater than 0.98. Four specific process criteria were used to allow process optimization. Results obtained show that it is not possible to maximize both extract productivity and purity (through the minimization of heavy fraction content) simultaneously by manipulating the mentioned process variables.
publishDate 1997
dc.date.none.fl_str_mv 1997-12-01
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=S0101-20611997000400032
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611997000400032
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0101-20611997000400032
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 Sociedade Brasileira de Ciência e Tecnologia de Alimentos
publisher.none.fl_str_mv Sociedade Brasileira de Ciência e Tecnologia de Alimentos
dc.source.none.fl_str_mv Food Science and Technology v.17 n.4 1997
reponame:Food Science and Technology (Campinas)
instname:Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA)
instacron:SBCTA
instname_str Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA)
instacron_str SBCTA
institution SBCTA
reponame_str Food Science and Technology (Campinas)
collection Food Science and Technology (Campinas)
repository.name.fl_str_mv Food Science and Technology (Campinas) - Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA)
repository.mail.fl_str_mv ||revista@sbcta.org.br
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