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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/21913

    Título
    Optimal conditions for hemicelluloses extraction from Eucalyptus globulus wood: hydrothermal treatment in a semi-continuous reactor
    Autor
    Gallina, GianlucaAutoridad UVA
    Cabeza Sánchez, ÁlvaroAutoridad UVA Orcid
    Biasi, Pierdomenico
    García Serna, JuanAutoridad UVA Orcid
    Año del Documento
    2016
    Descripción
    Producción Científica
    Documento Fuente
    Fuel Processing Technology 148 (2016) 350–360
    Abstract
    Optimal conditions for hemicellulose extraction from wooden biomass in a semi-continuous system have been assessed in thiswork. This studywould constitute the first stage for a profitable and green industrial process. Eucalyptus globuluswas selected as rawmaterial due to its lowwater consumption, high growth and its efficiency in lignocellulose production.Moreover its cultivation is very popular in southern Europe. Samples of 5.0 g of wood were fractioned using a pressurized hot water semi-continuous system, to produce sugars (pentoses and hexoses) and a solid residue enriched in lignin. Five flow rates between 2.50 and 20.00 mL/min and four temperatures between 135.0 and 285.0 °C were tested in order to maximize the production of sugars, avoiding the formation of degradation products. Optimumconditions for the extraction of hemicellulose were identified at 185.0 °C and 5.00 mL/min, leading to a pentoses yield of 67.409wt%,with 0.702 wt% of degradation products. Almost all the pulp is extracted at 285.0 °C. SEM images show very well the changes in the wood structure at different temperatures. A kinetic model was developed, describing the extraction and hydrolysis of hemicellulose and cellulosewith absolute average deviations around 10% for sugar extracted mass.
    Materias (normalizadas)
    Eucalyptus
    ISSN
    0378-3820
    Revisión por pares
    SI
    DOI
    10.1016/j.fuproc.2016.03.018
    Patrocinador
    Junta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA330U13)
    Version del Editor
    http://www.sciencedirect.com/
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/21913
    Derechos
    openAccess
    Collections
    • BioEcoUVa - Artículos de revista [195]
    • DEP48 - Artículos de revista [265]
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    Attribution-NonCommercial-NoDerivatives 4.0 InternationalExcept where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International

    Universidad de Valladolid

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