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...
| Autores: | ; ; ; |
|---|---|
| Tipo de documento: | Artigo |
| Estado: | Published version |
| Data de publicação: | 1994 |
| País: | Chile |
| Recursos: | Agencia Nacional de Investigación y Desarrollo |
| Repositório: | Articulos_ANID |
| Idioma: | Inglês |
| OAI Identifier: | oai:repositorio.anid.cl:10533/196899 |
| Acesso em linha: | https://hdl.handle.net/10533/196899 |
| Nível de acesso: | Acesso aberto |
| Palavra-chave: | ODS 6: Agua limpia y saneamiento Ciencias Naturales Ciencias Físicas Química |
| _version_ | 1879187257042141184 |
|---|---|
| author | BAEZA-HERNANDEZ, JAIME |
| author2 | FREER-CALDERON, JUANITA DURAN-CABALLERO, NELSON ERISMA, N. |
| author2_role | author author author |
| author_browse | BAEZA-HERNANDEZ, JAIME DURAN-CABALLERO, NELSON ERISMA, N. FREER-CALDERON, JUANITA |
| author_facet | BAEZA-HERNANDEZ, JAIME FREER-CALDERON, JUANITA DURAN-CABALLERO, NELSON ERISMA, N. |
| author_role | author |
| collection | Articulos_ANID |
| 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | CL_2e68e507b34cc321fc6d2e8828ffe17d |
| institution | Agencia Nacional de Investigación y Desarrollo |
| instname_str | Agencia Nacional de Investigación y Desarrollo |
| language | eng |
| network_acronym_str | CL |
| network_name_str | Chile |
| oai_identifier_str | oai:repositorio.anid.cl:10533/196899 |
| publishDate | 1994 |
| publishDateSort | 1994 |
| publisher | ELSEVIER SCI LTD |
| publisherStr | ELSEVIER SCI LTD |
| reponame_str | Articulos_ANID |
| spelling | Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis BIORESOURCE TECHONOLOGY Bioresour. Technol. BAEZA-HERNANDEZ, JAIME FREER-CALDERON, JUANITA DURAN-CABALLERO, NELSON ERISMA, N. ODS 6: Agua limpia y saneamiento Ciencias Naturales Ciencias Físicas Química 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. 0 15 FONDEF formic, acid, pulping, under, pulp, yield, delignification 47 ELSEVIER SCI LTD D91S1037 WOS:A1994NC31200009 0960-8524 https://hdl.handle.net/10533/196899 |
| spellingShingle | Organosolv pulping-vii - delignification selectivity of formic-acid pulping of eucalyptus-grandis BAEZA-HERNANDEZ, JAIME ODS 6: Agua limpia y saneamiento Ciencias Naturales Ciencias Físicas Química |
| status_str | publishedVersion |
| title | 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_short | 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 |
| topic | ODS 6: Agua limpia y saneamiento Ciencias Naturales Ciencias Físicas Química |
| topic_facet | ODS 6: Agua limpia y saneamiento Ciencias Naturales Ciencias Físicas Química |
| url | https://hdl.handle.net/10533/196899 |