TY - JOUR
T1 - Comprehensive thermokinetic modelling and predictions of cellulose decomposition in isothermal, non-isothermal, and stepwise heating modes
AU - Osman, Ahmed I.
AU - Fawzy, Samer
AU - Farrell, Charlie
AU - Al-Muhtaseb, Ala'a H.
AU - Harrison, John
AU - Al-Mawali, Suhaib
AU - Rooney, David W.
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/1/1
Y1 - 2022/1/1
N2 - The increasing significance of biomass in attaining ultimate sustainability in a multitude of vectors demands a deeper understanding of its underlying components. The pyrolytic breakdown of cellulose, a major biomass component, has been a subject of intense research since the 1950 s, and despite significant research carried out and published thus far, the kinetics of cellulose degradation continue to be a source of debate. Herein, this work investigates the pyrolytic degradation of cellulose using Advanced Kinetics and Technology Solutions (AKTS) software. Kinetic parameters were computed using three methods, Friedman's differential iso-conversional, FWO and ASTM-E698. The results indicate Ea values of 40–181, 68–166, and 152.1 kJ/mol, using Friedman's, FWO and ASTM-E698 methods, respectively. Based on the results obtained via Friedman's differential iso-conversional method, predictions under isothermal, non-isothermal and stepwise heating profiles are presented. The predictions revealed that rapid degradation takes place up to 80% conversion, and a temperature of 350–400 °C is required to efficiently achieve this, while temperatures of 650 °C and higher are needed to efficiently achieve a 100% conversion in less than 2 h, under isothermal conditions.
AB - The increasing significance of biomass in attaining ultimate sustainability in a multitude of vectors demands a deeper understanding of its underlying components. The pyrolytic breakdown of cellulose, a major biomass component, has been a subject of intense research since the 1950 s, and despite significant research carried out and published thus far, the kinetics of cellulose degradation continue to be a source of debate. Herein, this work investigates the pyrolytic degradation of cellulose using Advanced Kinetics and Technology Solutions (AKTS) software. Kinetic parameters were computed using three methods, Friedman's differential iso-conversional, FWO and ASTM-E698. The results indicate Ea values of 40–181, 68–166, and 152.1 kJ/mol, using Friedman's, FWO and ASTM-E698 methods, respectively. Based on the results obtained via Friedman's differential iso-conversional method, predictions under isothermal, non-isothermal and stepwise heating profiles are presented. The predictions revealed that rapid degradation takes place up to 80% conversion, and a temperature of 350–400 °C is required to efficiently achieve this, while temperatures of 650 °C and higher are needed to efficiently achieve a 100% conversion in less than 2 h, under isothermal conditions.
KW - Cellulose
KW - Kinetic modelling
KW - Pyrolysis
KW - Thermokinetic predictions
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U2 - 10.1016/j.jaap.2021.105427
DO - 10.1016/j.jaap.2021.105427
M3 - Article
AN - SCOPUS:85122321544
SN - 0165-2370
VL - 161
JO - Journal of Analytical and Applied Pyrolysis
JF - Journal of Analytical and Applied Pyrolysis
M1 - 105427
ER -