Synergistic and kinetic analyses of cassava, yam, coal, and their blends by using pyrolytic thermogravimetry
Journal of Thermal Analysis and Calorimetry, cilt.151, sa.19, ss.16077-16095, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 151 Sayı: 19
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s10973-026-16145-4
- Dergi Adı: Journal of Thermal Analysis and Calorimetry
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Chimica, Compendex, Index Islamicus, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Sayfa Sayıları: ss.16077-16095
- Anahtar Kelimeler: Cassava, Coal, Kinetic, Synergy, TGA, Yam
- Akdeniz Üniversitesi Adresli: Evet
Özet
This study investigates the thermal degradation behavior with the kinetic and thermodynamic analyses of cassava (C), yam (Y), coal, and their mixtures, and it also evaluates their synergistic effects through thermogravimetric analysis (TGA) in a nitrogen gas atmosphere at 10, 20, and 40 °C min−1 heating rates. Thermodynamic and kinetic analyses have been performed using the FWO and KAS models to evaluate activation energy (Ea) and molecular dynamics. Major decomposition of biomasses occurred between 430 and 530 °C. Overall, C and Y blends had a synergistic effect, while the biomass mixture (CY = 50% C + 50% Y) with coal had no synergy. The lowest and highest mean Ea values measured using FWO and KAS methods observed in 50% CY + 50% Coal were 106.27 and 101.78 kJ mol−1, and in 25% C + 75% Y, it was 169.19 and 171.01 kJ mol⁻1, respectively. The CY and coal blends had the lowest mean Ea values for FWO and KAS, while the C and Y blends had the highest mean Ea. Individual feedstocks were in the middle regarding the mean Ea. The models performed well in estimating the mean Ea values, where R2 = 0.97 – 0.99 for FWO and R2 = 0.95 – 0.98 for KAS. Thermodynamic analysis demonstrated moderate energy barriers and increasing molecular disorder for biomasses, while coal required higher enthalpy and Gibbs free energy inputs, indicating greater decomposition challenges. This study underscores the need for further research into scaling up co-pyrolysis systems and optimizing process conditions to maximize efficiency and product quality.