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dc.contributor.author
Inalbon, Maria Cristina
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dc.contributor.author
Solier, Yamil Nahún
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dc.contributor.author
Zanuttini, Miguel Angel Mario
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dc.date.available
2020-10-19T14:45:03Z
dc.date.issued
2017-10
dc.identifier.citation
Inalbon, Maria Cristina; Solier, Yamil Nahún; Zanuttini, Miguel Angel Mario; Hydrothermal treatment of Eucalyptus wood: Effects on Ion permeability and material removing; Elsevier Science; Industrial Crops and Products; 104; 10-2017; 195-200
dc.identifier.issn
0926-6690
dc.identifier.uri
http://hdl.handle.net/11336/116111
dc.description.abstract
Hemicelluloses, the second most abundant polysaccharides in nature after cellulose, can be used for hydrogels, in packaging-films, or biomedical materials, among other purposes. In the case of eucalyptus wood, glucuronoxylans are the main constituents of hemicellulose. Hot water extraction can be used as a pretreatment for purposes of hydrolysis of the biomass followed by fermentation and also as a previous stage in pulping processes. The influence of auto hydrolysis/extraction has been widely studied for different lignocellulosic materials, but the characteristics of the hydrolyzate and aspects like change in wood permeability have not been analyzed in detail. This paper analyzes the hydrothermal treatment of Eucalyptus grandis chips and slices under mild conditions, considering temperature and time range corresponding to a Pfactor of up to 350. The ion permeability of the treated wood slices and its profile in wood chip, as well as the amount of hemicellulose and lignin dissolved from chips are evaluated. The amount of the hemicelluloses and lignin extracted was increased as treatment was intensified. For a Pfactor higher than 180, the increment in the extracted xylan is clear but the colloidal electric charge in the liquor is reduced due to xylan degradation. Total extracted lignin can be up to 3.0 g/100 g of original wood and the hemicelluloses 6.5 g xylose/100 g of original wood, respectively. The permeability of wood slices is clearly increased by water treatment. In the chip, the diffusion restriction leads to a permeability profile, and the increase at the proximity of the outer faces can be higher compared to that in the chip core.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AUTO HYDROLYSIS
dc.subject
EFFECTIVE CAPILLARY
dc.subject
HEMICELLULOSES
dc.subject
PROFILES
dc.subject.classification
Ingeniería de Procesos Químicos
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dc.subject.classification
Ingeniería Química
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Hydrothermal treatment of Eucalyptus wood: Effects on Ion permeability and material removing
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-09-25T19:02:48Z
dc.journal.volume
104
dc.journal.pagination
195-200
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Inalbon, Maria Cristina. Universidad Nacional del Litoral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Solier, Yamil Nahún. Universidad Nacional del Litoral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Zanuttini, Miguel Angel Mario. Universidad Nacional del Litoral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Industrial Crops and Products
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.journals.elsevier.com/industrial-crops-and-products
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.indcrop.2017.04.042
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