Unbleached Cellulose Pulp
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Filtro anaeróbio ascendente combinado com reator aeróbio de lodos ativados em batelada no tratamento de água residuária sintética de indústria de polpa celulósica não branqueada sob condições termofílicas / Upflow anaerobic filter combined with aerobic reactor of activated sludge in batch treating of synthetic wastewater from unbleached cellulose pulp plant under thermophilic conditions
Um sistema combinado anaeróbio-aeróbio composto de um filtro anaeróbio ascendente seguido de reator aeróbio de lodos ativados em batelada, foi continuamente alimentado com água residuária sintética da indústria de polpa celulósica não branqueada, durante o período de trezentos e sessenta e três dias, com o objetivo de verificar o desempenho dos r
Publicado em: 2007
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2. Influência da carga alcalina no processo de polpação Lo-Solids® para madeiras de eucalipto. / The influence of alkali charge on lo-solidsâ â pulping process for eucalyptus woods.
The main objective of this work was to study the influence of the alkali charge on Lo-Solidsâ modified kraft pulping process for eucalyptus, considering parameters as yield, rejects content, total dissolved solids materials and the pulp characteristics as kappa number, viscosity, carbohydrate composition and fibers dimensions. Woods from hybrids of Eucalypt
Publicado em: 2003
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3. Modo de ação de xilanases de Aspergillus sp 2M1 em sequencias de branqueamento de polpas de Eucalyptus grandis totalmente livres de cloro
Unbleached Eucalyptus grandis kraft pulps were submitted to TCF bleaching sequences (XOP - Xylanase/Oxygen/Peroxide and XZP -Xylanase/Ozone/Peroxide) using a non-commercial enzyme (Asperzyme 2M1) at the X stage. During the enzymatic treatment, the xylanase charge, inducted carbon source, incubation temperature and incubation time were changed. The pulp sampl
Publicado em: 1999
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4. Obtenção de insumos quimicos a partir do aproveitamento integral do bagaço de cana
Sugar cane bagasse was pre-treated by steam explosion in a 0.65 L stainless-steel reactor. The experiments were carried out at temperatures ranging from 165 to 210°C and for 5 to 60 min, using 11 g of water-free bagasse. At 190°C ca. 36% of the sugar cane bagasse was dissolved after 15 min. Under these conditions, 86% of glucans was recovered in the form o
Publicado em: 1995
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5. Characterization of Palo Podrido, a Natural Process of Delignification in Wood †
Chemical and morphological changes of incipient to advanced stages of palo podrido, an extensively delignified wood, and other types of white rot decay found in the temperate forests of southern Chile were investigated. Palo podrido is a general term for white rot decay that is either selective or nonselective for the removal of lignin, whereas palo blanco d