Integral valorization of Leucaena diversifolia by hydrothermal and pulp processing

► Leucaena lends itself to valorization for energy and integral fractional exploitation. ► The autohydrolysis solid phase can be used to obtain chemicals, burnt or to obtain cellulose pulp. ► The liquid phase is rich in monomers and oligomers. ► The autohydrolysis facilitates refining and the resist...

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Bibliographic Details
Published in:Bioresource technology 2012-01, Vol.103 (1), p.381-388
Main Authors: Feria, Manuel J., Alfaro, Ascensión, López, Francisco, Pérez, Antonio, García, Juan C., Rivera, Amanda
Format: Article
Language:English
Subjects:
Autohydrolysis
Biological and medical sciences
Biotechnology - methods
Bursting
Calorific value
Cellulose pulp
Ethanol–soda–anthraquinone delignification
Fabaceae - chemistry
Fundamental and applied biological sciences. Psychology
Glucose - analysis
Gross heating value
Hydrolysis
Hydrothermal treatment
Integrals
Leucaena
Leucaena diversifolia
Lignin - analysis
Lignin - chemistry
Models, Chemical
Solid phases
Tearing
Temperature
Water - chemistry
Wood
Xylose - analysis
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Summary:► Leucaena lends itself to valorization for energy and integral fractional exploitation. ► The autohydrolysis solid phase can be used to obtain chemicals, burnt or to obtain cellulose pulp. ► The liquid phase is rich in monomers and oligomers. ► The autohydrolysis facilitates refining and the resistance of the paper sheets. Wood from the leguminous tree, Leucaena diversifolia, was subjected to hydrothermal treatment (autohydrolysis) at 160–180°C for 0–30min followed by ethanol–soda–anthraquinone delignification. The liquid phase contained 18.65g of sugars per liter, and the solid phase had a gross heating value of 19.083MJ/kg, but could also be used as a source of cellulose pulp for the production of paper with tear, burst, and tensile indexes of 2.4Nm2/kg, 2.6MPam2/kg and 40.7kNm/kg, respectively. L. diversifolia lends itself readily to valorization for energy production, and also to integral, fractional exploitation by autohydrolysis and ethanol–soda–anthraquinone delignification, which can additionally bring environmental benefits to cropping zones.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2011.09.100