Integral valorization of Leucaena diversifolia by hydrothermal and pulp processing.
Wood from the leguminous tree, Leucaena diversifolia, was subjected to hydrothermal treatment (autohydrolysis) at 160-180 °C for 0-30 min followed by ethanol-soda-anthraquinone delignification. The liquid phase contained 18.65 g of sugars per liter, and the solid phase had a gross heating value of 19.083 MJ/kg, but could also be used as a source of cellulose pulp for the production of paper with tear, burst, and tensile indexes of 2.4 N m2/kg, 2.6 MPa m2/kg and 40.7 kN m/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.
Chemical Engineering Department, Facultad de Ciencias Experimentales, University of Huelva, Campus de Excelencia Internacional Agroalimentario, ceiA3, Av. 3 de Marzo S/N, 21071 Huelva, Spain.
Manuel J
MJ
Feria
Ascensión
A
Alfaro
Francisco
F
López
Antonio
A
Pérez
Juan C
JC
García
Amanda
A
Rivera
D001709:Biotechnology / Q000379:methods*; D007887:Fabaceae / Q000737:chemistry*; D005947:Glucose / Q000032:analysis; D006868:Hydrolysis; D008031:Lignin / Q000032:analysis / Q000737:chemistry; D008956:Models, Chemical; D010209:Paper; D013696:Temperature; D014867:Water / Q000737:chemistry*; D014994:Xylose / Q000032:analysis
D014867:Water; C036909:lignocellulose; D008031:Lignin; D014994:Xylose; D005947:Glucose