Properties of bleached pulp sheets of avocado wood (Persea americana Mill.) pulped by Kraft and Soda processes
Chips of avocado wood (Persea americana Mill.) were pulped by means of conventional Soda and Kraft pulping processes. The pulps were bleached with an elemental-chlorine-free sequence OD1-Eop-D2, pre-setting reaction conditions for the first chlorine dioxide stage (D1) . The results show that during...
| Main Authors: | , , , , , |
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| Format: | Online |
| Language: | eng |
| Published: |
Instituto de Ecología, A.C.
2016
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| Online Access: | https://myb.ojs.inecol.mx/index.php/myb/article/view/1248 |
| _version_ | 1799769254797508608 |
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| author | Vargas, R. Sanjuán D., J. R. Silva G., J. A. Rivera P., J. Fuentes T., F. J. Richter, H. G. |
| author_facet | Vargas, R. Sanjuán D., J. R. Silva G., J. A. Rivera P., J. Fuentes T., F. J. Richter, H. G. |
| author_sort | Vargas, R. |
| collection | MYB |
| description | Chips of avocado wood (Persea americana Mill.) were pulped by means of conventional Soda and Kraft pulping processes. The pulps were bleached with an elemental-chlorine-free sequence OD1-Eop-D2, pre-setting reaction conditions for the first chlorine dioxide stage (D1) . The results show that during the chemical pulping process, avocado wood is easier to cook than other hardwoods such as eucalyptus. The avocado pulp also showed a very good bleachability, reaching brightness levels of up to 92% ISO compared to 84% for eucalyptus after the ECF bleaching sequence. The avocado Kraft pulps required more chemical input in the bleaching sequence than the Soda pulps. On the other hand, the physico-mechanical properties of the pulp were not notably reduced by the bleaching process, the Kraft pulp being stronger than the soda pulp. Strength properties of avocado are similar to those of eucalyptus; therefore this raw material constitutes a worthwhile choice for cellulosic fiber supply. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-1248 |
| institution | Madera y Bosques |
| language | eng |
| publishDate | 2016 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-12482022-11-30T00:45:00Z Properties of bleached pulp sheets of avocado wood (Persea americana Mill.) pulped by Kraft and Soda processes Properties of bleached pulp sheets of avocado wood (Persea americana Mill.) pulped by Kraft and Soda processes Vargas, R. Sanjuán D., J. R. Silva G., J. A. Rivera P., J. Fuentes T., F. J. Richter, H. G. Elemental chlorine free bleaching chlorine dioxide Persea americana Mill physical-mechanical properties Kraft pulping soda pulping Blanqueo libre de cloro elemental dióxido de cloro Persea americana Mill propiedades físico-mecánicas pulpeo kraft pulpeo a la sosa Chips of avocado wood (Persea americana Mill.) were pulped by means of conventional Soda and Kraft pulping processes. The pulps were bleached with an elemental-chlorine-free sequence OD1-Eop-D2, pre-setting reaction conditions for the first chlorine dioxide stage (D1) . The results show that during the chemical pulping process, avocado wood is easier to cook than other hardwoods such as eucalyptus. The avocado pulp also showed a very good bleachability, reaching brightness levels of up to 92% ISO compared to 84% for eucalyptus after the ECF bleaching sequence. The avocado Kraft pulps required more chemical input in the bleaching sequence than the Soda pulps. On the other hand, the physico-mechanical properties of the pulp were not notably reduced by the bleaching process, the Kraft pulp being stronger than the soda pulp. Strength properties of avocado are similar to those of eucalyptus; therefore this raw material constitutes a worthwhile choice for cellulosic fiber supply. Astillas de madera de aguacate (Persea americana Mill.) fueron cocidas por medio de los procesos convencionales Sosa y Kraft. Las pulpas celulósicas obtenidas fueron blanqueadas con una secuencia libre de cloro elemental O-D1-Eop-D2, estableciendo previamente las condiciones de reacción para la primera etapa de dióxido de cloro (D1) . Los resultados obtenidos muestran que la madera de aguacate es pulpeada con mayor facilidad que una madera dura como el eucalipto. De igual forma muestra mayor facilidad de blanqueo, alcanzando niveles de blancura de 92% ISO comparados con 84% ISO que se logra con el eucalipto con la misma secuencia de blanqueo. La pulpa de madera de aguacate obtenida con el proceso Kraft demandó más reactivos durante el blanqueo que la pulpa de madera de aguacate obtenida con el proceso a la sosa. Por otra parte, las propiedades de resistencia físico-mecánica, no fueron afectadas negativamente por los procesos de blanqueo, mostrando mayor resistencia la pulpa Kraft. Finalmente, se aprecia similar resistencia de las pulpas de madera de aguacate y las de eucalipto, por lo que se considera que esta materia prima podría ser una opción de suministro de fibras celulósicas. Instituto de Ecología, A.C. 2016-08-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf https://myb.ojs.inecol.mx/index.php/myb/article/view/1248 10.21829/myb.2006.1211248 Madera y Bosques; Vol. 12 No. 1 (2006): Primavera 2006; 29-36 Madera y Bosques; Vol. 12 Núm. 1 (2006): Primavera 2006; 29-36 2448-7597 1405-0471 eng https://myb.ojs.inecol.mx/index.php/myb/article/view/1248/1418 Derechos de autor 2016 Madera y Bosques |
| spellingShingle | Vargas, R. Sanjuán D., J. R. Silva G., J. A. Rivera P., J. Fuentes T., F. J. Richter, H. G. Properties of bleached pulp sheets of avocado wood (Persea americana Mill.) pulped by Kraft and Soda processes |
| title | Properties of bleached pulp sheets of avocado wood (Persea americana Mill.) pulped by Kraft and Soda processes |
| title_full | Properties of bleached pulp sheets of avocado wood (Persea americana Mill.) pulped by Kraft and Soda processes |
| title_fullStr | Properties of bleached pulp sheets of avocado wood (Persea americana Mill.) pulped by Kraft and Soda processes |
| title_full_unstemmed | Properties of bleached pulp sheets of avocado wood (Persea americana Mill.) pulped by Kraft and Soda processes |
| title_short | Properties of bleached pulp sheets of avocado wood (Persea americana Mill.) pulped by Kraft and Soda processes |
| title_sort | properties of bleached pulp sheets of avocado wood (persea americana mill.) pulped by kraft and soda processes |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/1248 |
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