title: Thermogravimetric-mass spectrometric analysis on combustion of lignocellulosic biomass.
abstract: Combustion characteristics of biomass main components and three lignocellulosic biomass (fir wood, eucalyptus wood and pine bark) were investigated by thermogravimetric analysis coupled with mass spectrometry. The combustion of biomass was divided into two main steps, devolatilization and char oxidation stage. Heating rate effect was also studied. Generally, the higher the heating rate, the higher the decomposition temperature. Furthermore, the weight loss rate decreased due to particle temperature gradients. Combustion kinetics were studied. Models based on reaction order (Oi), nucleation (Ni) and diffusion (Di) achieved the best fitting to the experimental data. Cellulose oxidation presented the highest activation energies. CO, CO2 and H2O were the main components evolved from combustion. Additionally, light hydrocarbons (CH4 and C2H5) were also present. Finally, nitrogen compounds were in a higher proportion than sulfur compounds being released as primary amines and NOx.
authors.affiliation: Department of Chemical Engineering, University of Castilla-La Mancha, Avda. Camilo José Cela 12, 13071 Ciudad Real, Spain.
authors.forename: D
authors.initials: D
authors.lastname: López-González
authors.forename: M
authors.initials: M
authors.lastname: Fernandez-Lopez
authors.forename: J L
authors.initials: JL
authors.lastname: Valverde
authors.forename: L
authors.initials: L
authors.lastname: Sanchez-Silva
mesh_terms: D018533:Biomass; D007700:Kinetics; D008031:Lignin / Q000737:chemistry / Q000378:metabolism*; D013058:Mass Spectrometry; D013818:Thermogravimetry
chemical_list: C036909:lignocellulose; D008031:Lignin
keywords: Combustion; Heating rate; Kinetics; Lignocellulosic biomass; TGA–MS