Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis

Eucalyptus grandis wood was ca. 80% delignified in 79-92% (v v-1) formic acid containing 0.22% (w v-1) HCl as a catalyst under reflux and mechanical stirring for 90 min. Pulps obtained under these conditions presented pulp yield, Kappa number and Klason lignin in the ranges of 44-52%, 30-40 and 8-10...

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Autores: BAEZA-HERNANDEZ, JAIME, FREER-CALDERON, JUANITA, DURAN-CABALLERO, NELSON, ERISMA, N.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1994
País:Chile
Idioma:inglés
OAI Identifier:oai:repositorio.anid.cl:10533/196899
Acceso en línea:https://hdl.handle.net/10533/196899
Access Level:acceso abierto
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spelling ERISMA, N.DURAN-CABALLERO, NELSONFREER-CALDERON, JUANITABAEZA-HERNANDEZ, JAIME199410.1016/0960-8524(94)90188-0https://hdl.handle.net/10533/196899http://purl.org/coar/access_right/c_abf2Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis256247NLDOXFORDBAEZA-HERNANDEZ, JAIMEFREER-CALDERON, JUANITADURAN-CABALLERO, NELSONERISMA, N.2017-04-27T18:49:37Z2022-07-07T01:40:11Z2017-04-27T18:49:37Z2022-07-07T01:40:11Z1994Eucalyptus grandis wood was ca. 80% delignified in 79-92% (v v-1) formic acid containing 0.22% (w v-1) HCl as a catalyst under reflux and mechanical stirring for 90 min. Pulps obtained under these conditions presented pulp yield, Kappa number and Klason lignin in the ranges of 44-52%, 30-40 and 8-10%, respectively. The presence of water in the experiments with the more diluted formic acid concentration (79%) showed a beneficial effect on the pulp fiber length and pulp yield. Formic acid sawdust treatments were carried out under the best chip pulping conditions. Plots of yield versus lignin loss show comparable delignification selectivity for sawdust and chips. The most selective pulping experiments were those with 79% formic acid employing a mechanical stirrer blade of polytetrafluorethylene (PTFE) and those with 99% formic acid using a stainless steel blade.015FONDEF00FONDEF470D91S1037D91S1037virtual::40798-1WOS:A1994NC31200009WOS:A1994NC312000090960-8524https://hdl.handle.net/10533/196899ELSEVIER SCI LTDinstname: Conicytreponame: Repositorio Digital RI2.0instname: Conicytreponame: Repositorio Digital RI2.010.1016/0960-8524(94)90188-0info:eu-repo/grantAgreement/Fondef/D91S1037info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477https://doi.org/10.1016/0960-8524(94)90188-0info:eu-repo/semantics/openAccessOrganosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandisBIORESOURCE TECHONOLOGYBioresour. Technol.Articuloinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionengArticulohttps://hdl.handle.net/10533/196899FONDEFhttp://purl.org/coar/resource_type/c_2df8fbb176a7bd0a-b7c4-4f96-96ca-926e8db26017virtual::40798-176a7bd0a-b7c4-4f96-96ca-926e8db26017virtual::40798-110533/196899oai:repositorio.anid.cl:10533/1968992023-07-24 16:20:12.867https://repositorio.anid.clRepositorio ANIDaletelier@anid.cl
dc.title.none.fl_str_mv Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis
dc.title.journal.none.fl_str_mv BIORESOURCE TECHONOLOGY
dc.title.journalabbreviation.none.fl_str_mv Bioresour. Technol.
title Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis
spellingShingle Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis
BAEZA-HERNANDEZ, JAIME
title_short Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis
title_full Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis
title_fullStr Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis
title_full_unstemmed Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis
title_sort Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis
dc.creator.none.fl_str_mv BAEZA-HERNANDEZ, JAIME
FREER-CALDERON, JUANITA
DURAN-CABALLERO, NELSON
ERISMA, N.
author BAEZA-HERNANDEZ, JAIME
author_facet BAEZA-HERNANDEZ, JAIME
FREER-CALDERON, JUANITA
DURAN-CABALLERO, NELSON
ERISMA, N.
author_role author
author2 FREER-CALDERON, JUANITA
DURAN-CABALLERO, NELSON
ERISMA, N.
author2_role author
author
author
description Eucalyptus grandis wood was ca. 80% delignified in 79-92% (v v-1) formic acid containing 0.22% (w v-1) HCl as a catalyst under reflux and mechanical stirring for 90 min. Pulps obtained under these conditions presented pulp yield, Kappa number and Klason lignin in the ranges of 44-52%, 30-40 and 8-10%, respectively. The presence of water in the experiments with the more diluted formic acid concentration (79%) showed a beneficial effect on the pulp fiber length and pulp yield. Formic acid sawdust treatments were carried out under the best chip pulping conditions. Plots of yield versus lignin loss show comparable delignification selectivity for sawdust and chips. The most selective pulping experiments were those with 79% formic acid employing a mechanical stirrer blade of polytetrafluorethylene (PTFE) and those with 99% formic acid using a stainless steel blade.
publishDate 1994
dc.date.issued.none.fl_str_mv 1994
dc.date.accessioned.none.fl_str_mv 2017-04-27T18:49:37Z
2022-07-07T01:40:11Z
dc.date.available.none.fl_str_mv 2017-04-27T18:49:37Z
2022-07-07T01:40:11Z
dc.type.none.fl_str_mv Articulo
dc.type.driver.none.fl_str_mv info:eu-repo/semantics/article
dc.type.openaire.none.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.eissn.none.fl_str_mv 0
dc.identifier.folio.none.fl_str_mv D91S1037
D91S1037
dc.identifier.idwos.none.fl_str_mv WOS:A1994NC31200009
dc.identifier.isi.none.fl_str_mv WOS:A1994NC31200009
dc.identifier.issn.none.fl_str_mv 0960-8524
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10533/196899
identifier_str_mv 0
D91S1037
WOS:A1994NC31200009
0960-8524
url https://hdl.handle.net/10533/196899
dc.language.*.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv instname: Conicyt
reponame: Repositorio Digital RI2.0
instname: Conicyt
reponame: Repositorio Digital RI2.0
dc.relation.doi.none.fl_str_mv 10.1016/0960-8524(94)90188-0
dc.relation.projectid.none.fl_str_mv info:eu-repo/grantAgreement/Fondef/D91S1037
dc.relation.set.none.fl_str_mv info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477
dc.relation.uri.none.fl_str_mv https://doi.org/10.1016/0960-8524(94)90188-0
dc.rights.driver.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.coverage.spatial.none.fl_str_mv OXFORD
dc.publisher.none.fl_str_mv ELSEVIER SCI LTD
publisher.none.fl_str_mv ELSEVIER SCI LTD
repository.name.fl_str_mv Repositorio ANID
repository.mail.fl_str_mv aletelier@anid.cl
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