Integral valorization of tagasaste (Chamaecytisus proliferus) under hydrothermal and pulp processing.
Tagasaste wood (Chamaecytisus proliferus L.F. ssp palmensis) was characterized, chemical and energy terms, and assessed its potential as a lignocellulosic raw material, and its integral fractionation by autohydrolysis and delignification with ethanol. The hydrothermal treatment of the raw material at 175-185 degrees C provided a liquor containing a substantially increased amount of oligomers (between 16.6% and 47.4% as percentages with respect to the content of the raw material in each polymer fraction). A cellulose pulp with autohydrolysis treatment increased yields (53-60%), reduced Kappa number (28.8-34.6) but also viscosity (755-857 mL/g), and decreased paper strength (2.97-5.22 kN m/kg). However, beating ethanol cellulose from tagasaste was found to improve its strength-related properties more markedly than in soda pulp from the same material (tensile index of 44 kN m/kg).
Alfaro
A
A
Forest Engineering Department, Faculty of Experimental Sciences, Huelva University, Huelva, Spain.
López
F
F
Pérez
A
A
García
J C
JC
Rodríguez
A
A
D005591:Chemical Fractionation / Q000379:methods*; D007887:Fabaceae / Q000737:chemistry*; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry; D010209:Paper; D013696:Temperature; D013718:Tensile Strength; D014867:Water / Q000737:chemistry*
D014867:Water; C036909:lignocellulose; D008031:Lignin