Thermogravimetric analysis and kinetic modeling of Nanche stone BSC pyrolysis: A potential agro-industrial waste for bioenergy production
Sánchez-Silva J.M., Ocampo-Pérez R., Padilla-Ortega E., Sangare D., Escobedo-Bretado M.A., DomÃnguez-Arvizu J.L., Hernández-Majalca B.C., Morales-Mendoza J.E., López-Ortiz A., Collins-MartÃnez V.. 2023. In : Abd Wahab Noor Zarina (ed.). Prime archives in molecular sciences. Hyderabad : Vide Leaf, p. 1-40.
The aim of this study is to examine the pyrolysis kinetics of Nanche stone BSC (Byrsonima crassifolia), a type of agro-industrial waste, through non-isothermal thermogravimetric experiments. By identifying the triplet kinetics (including apparent activation energy, pre-exponential factor, and reaction model) and thermodynamic parameters, we intend to collect essential information for the design, construction, and operation of a pilot-scale reactor to pyrolyze this lignocellulosic residue. The findings suggest that BCS has low levels of moisture and ash, while exhibiting a high percentage of volatile matter (=70%). These characteristics make BCS a promising candidate for producing a range of bioenergy products. Average apparent activation energies obtained from different methods (KAS, FWO and SK) were consistent in value (~123.8 kJ/mol). The pre-exponential factor from the Kissinger method ranged from 105 to 1014 min-1 for the highest pyrolytic activity stage, indicating a high-temperature reactive system The thermodynamic analysis showed that the difference between EA and ¿H is small (5.2 kJ/mol), which is favorable for the pyrolysis reaction and indicates that the energy process is feasible. The analysis of the reaction models, using the master plot method, revealed that the pyrolytic degradation is primarily governed by a decreasing reaction order with respect to the degree of conversion. Furthermore, BCS exhibits a relatively high calorific value of 14.9 MJ/kg, coupled with a comparatively low average apparent activation energy of 122.7 kJ/mol as determined by the Starink method. These characteristics show BCS highly suitable for utilization in value-added energy production.
Documents associés
Chapitre d'ouvrage
Agents Cirad, auteurs de cette publication :
- Sangare Diakaridia — Persyst / UPR BioWooEB
