Show simple item record

dc.contributor.authorLópez Baldovín, Francisco 
dc.contributor.authorGarcía Domínguez, María Trinidad
dc.contributor.authorFeria Infante, Manuel Javier 
dc.contributor.authorGarcía Domínguez, Juan Carlos 
dc.contributor.authorDiego, C. M. de
dc.contributor.authorZamudio, Minerva A. M.
dc.contributor.authorDíaz Blanco, Manuel Jesús
dc.identifier.citationLópez Baldovín, Francisco ; García Domínguez, M.T., Feria Infante, M.J., García Domínguez, J.C., Diego, C.M., Zamudio, M.A.M., Díaz Blanco, M.J.: "Optimization of furfural production by acid hydrolysis of "Eucalyptus globulus" in two stages". Chemical Engineering Journal. Vol. 240, págs. 195-201. ISSN 1385-8947
dc.description.abstractThe aim of this study was to optimize the production of furfural by hydrolysis with dilute acid of Eucalyptus globulus wood in two stages, using a factorial experimental design and multiple regression models to maximize furfural yields. The two-stage process could provide a solid phase with less degraded cellulose and older applications that the solid phase of a conventional acid hydrolysis. The selectivity for furfural of the process was increased by effect of the glucan and lignin fractions being efficiently removed after the first acid hydrolysis stage. The operational ranges are especially suitable for the extraction of xylose, which was virtually quantitative at 170 °C and virtually independent of the operation time. It is therefore advisable to use non-isothermal conditions or short times. This is quite important if one considers the low acid concentration used. The liquid phase obtained after autohydrolysis of the raw material under the optimum conditions contained 2.3% glucose, 9.8% xylose, 2.5% xylo-oligomers, 0.6% arabinose, 1.1% furfural and 0.1% 5-OH methyl furfural. After the residual solid from the first hydrolysis stage is removed, the acid concentration is the most influential variable on the conversion of xylo-oligomers or xylose into furfural. Conversions to furfural were quite substantial (greater than 10 g/L). Hemicelluloses in the raw material were extracted by 32–57.7% and xylan by 40.5–84%. The highest conversions to furfural were obtained by using a medium operation time (15 min) and low temperature (170 °C) and pH = 2. The process additionally provides hemicellulose derivatives that are scarcely contaminated with cellulose derivatives. The concentrations of gluco-oligomers were very low and those of glucose in the region of 3% of the raw material.en_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherAcid hydrolysisen_US
dc.subject.otherEucalyptus globulusen_US
dc.titleOptimization of furfural production by acid hydrolysis of "Eucalyptus globulus" in two stagesen_US

Files in this item

This item appears in the following Collection(s)

Show simple item record

Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España

Copyright © 2008-2010. ARIAS MONTANO. Repositorio Institucional de la Universidad de Huelva
Contact Us | Send Feedback |