Szczegóły publikacji

Opis bibliograficzny

Kinetic study of waste turkey bone gasification: statistical assessment of the reaction models describing Boudouard reaction in $CO_{2}$ and pressure-dependent modelling in lean air / Szymon Sobek, Agata MLONKA-MĘDRALA, Sebastian Werle, Gabriela Ionescu, Cosmin Mărculescu, Aneta MAGDZIARZ // Thermochimica Acta ; ISSN  0040-6031 . — 2026 — vol. 762 art. no. 180348, s. 1–12. — Bibliogr. s. 11–12, Abstr. — Publikacja dostępna online od: 2026-05-22

Autorzy (6)

Słowa kluczowe

kineticswaste bonereaction modelgasificationTGAactivation energypressure

Dane bibliometryczne

ID BaDAP168201
Data dodania do BaDAP2026-06-18
Tekst źródłowyURL
DOI10.1016/j.tca.2026.180348
Rok publikacji2026
Typ publikacjiartykuł w czasopiśmie
Otwarty dostęptak
Czasopismo/seriaThermochimica Acta

Abstract

This study presents a comprehensive multi-atmosphere kinetic analysis of turkey bone (TB) waste gasification using thermogravimetric analysis (TGA) at heating rates of 2, 4, 8, and 16 K/min. Two distinct atmospheres were investigated: pure CO2 and lean air (O2/N2) at oxygen partial pressures of 8.08·10⁻³ and 1.91·10⁻² bar. The Friedman isoconversional method revealed complex activation energy profiles for CO2 decomposition, with apparent Eₐ ranging from 103.4 kJ/mol at α = 0 to over 500 kJ/mol at α > 0.72, and an average Eₐ of 226.9 ± 18 kJ/mol (R² = 0.984). A four-stage kinetic model was developed for each atmosphere, validated through rigorous statistical analysis. For CO2 decomposition, six reaction models were tested for the fourth stage (reverse Boudouard reaction), and Fisher-Snedecor F-test analysis at 95% confidence interval identified Avrami-Erofeev (An), autocatalytic (Cn), Šesták-Berggren (SB), and reversible nth-order (FnR) models as statistically equivalent, while contracting geometry models (R2, R3) were rejected. The optimized CO2 model using An functions achieved R² = 0.999, with activation energies of 65.8, 141.7, 214.8, and 293.9 kJ/mol for moisture evaporation, organic matter decomposition, carbonate decomposition, and char gasification stages, respectively. For O2/N2 atmosphere, pressure-dependent kinetics were successfully modelled with power-law functions, revealing pressure exponents of 0.216 and 1.507 for the primary and secondary oxidation stages (R² = 0.999). This multi-atmosphere approach provides validated kinetic parameters essential for reactor modelling and CFD simulations of waste bone gasification processes.