Thermal degradations of wood biofuels, coals and hydrolysis lignin from the Russian Federation: Experiments and modeling

Evgeniya Popova , Aleksandr Chernov , Pavel Maryandyshev , Alain Brillard (1) , Damaris Kehrli , Gwenaelle Trouve (1) , Viktor Lyubov , Jean-Francois Brilhac (1)

1 GRE - Laboratoire de gestion des risques et environnement - LGRE

The thermal degradation of wood biofuels (spruce, pine), of coals from different fields of the Russian Federation and of hydrolysis lignin is investigated using a thermogravimetric analyzer under different heating conditions and under non-oxidative or oxidative atmospheres. The samples are indeed submitted to a linear temperature ramp of 10 K/min or to a temperature ramp of 200 K/min up to a residence temperature between 250 and 450 degrees C where they are maintained during 4 h (isothermal conditions). The values of the kinetic parameters are determined for these different samples in both thermal conditions, either using the differential isoconversional method or by means of an Extended Independent Parallel Reaction (EIPR) model. The values of the kinetic parameters obtained with this EIPR model for spruce trunk are also compared with that of its main constituents (hemicellulose, cellulose and lignin).

Domaines: Génie des procédés

Evgeniya Popova, Aleksandr Chernov, Pavel Maryandyshev, Alain Brillard, Damaris Kehrli, et al.. Thermal degradations of wood biofuels, coals and hydrolysis lignin from the Russian Federation: Experiments and modeling. Bioresource Technology, 2016, 218, pp.1046-1054. ⟨10.1016/j.biortech.2016.07.033⟩. ⟨hal-03278805⟩