Szczegóły publikacji
Opis bibliograficzny
In-depth kinetic and thermodynamic evaluation of agricultural biomass gasification in $CO_{2}$ atmosphere using TGA and pseudo-component deconvolution / Wojciech JERZAK, Małgorzata CIERPIŃSKA, Agata MLONKA-MĘDRALA, Aneta MAGDZIARZ // Renewable Energy ; ISSN 0960-1481 . — 2026 — vol. 271 art. no. 125992, s. 1–11. — Bibliogr. s. 10–11, Abstr. — Publikacja dostępna online od: 2026-05-25
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Dane bibliometryczne
| ID BaDAP | 168278 |
|---|---|
| Data dodania do BaDAP | 2026-07-08 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.renene.2026.125992 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Renewable Energy |
Abstract
The kinetics and thermodynamics of CO2 gasification for four agricultural residues: sunflower hulls (SH), cherry seeds (CS), tomato crop residues (TC) and buckwheat hulls (BH) were investigated using thermogravimetric analysis coupled with multi-peak bi-Gaussian deconvolution. The process was resolved into three pseudo-components for pyrolysis, with two more pseudo-components for subsequent char gasification. Notably, lignin-rich biomass matrices were found to exert an inhibitory effect on the decomposition of hemicellulose and cellulose. Activation energies determined using the Kissinger–Akahira–Sunose method ranged from 159 to 204 kJ/mol for pyrolysis and 236 to 445 kJ/mol for gasification. Master plot analysis revealed that the pyrolysis of pseudo-components is predominantly governed by order reaction models F2/3, F3/4, F1, F2 and F3, with a distinct transition toward diffusion-controlled mechanisms. Consequently, char gasification is governed by different mechanisms: BH is strictly controlled by reaction-order models (F3/4), whereas TC is entirely dominated by diffusion (D3). In contrast, SH and CS exhibit transitional behaviour between reaction-order (F2, F3/2 and F2/3) and diffusion-limited kinetics. Thermodynamic analysis revealed that gasification is strongly endothermic (enthalpy change up to 800 kJ/mol) and non-spontaneous (300–400 kJ/mol). The significant variability in activation entropy, ranging from highly positive (∼300 J/mol·K for CS) to negative (SH and TC), highlights divergent structural evolutions from ordered char to disordered porous matrices. These results demonstrate that feedstock-specific mineral catalysis, particularly the high Ca content in TC, primarily reduces the energy barriers, providing a rigorous framework for optimising CO2-assisted biomass conversion.