A new approach to obtain kinetic parameters of corn cob pyrolysis catalyzed with CaO and CaCO3

Erika Arenas Castiblanco; Juan Henao Montoya; Gabriela Valencia Rincón; Zulamita Zapata-Benabithe; Rafael Gómez-Vásquez; Diego A. Camargo-Trillos

doi:10.1016/j.heliyon.2022.e10195

A new approach to obtain kinetic parameters of corn cob pyrolysis catalyzed with CaO and CaCO₃

Erika Arenas Castiblanco, Juan Henao Montoya, Gabriela Valencia Rincón, Zulamita Zapata-Benabithe, Rafael Gómez-Vásquez, Diego A. Camargo-Trillos

Research output: Contribution to journal › Article in an indexed scientific journal › peer-review

6 Scopus citations

Abstract

A new approach is proposed to obtain the kinetic parameters of biomass pyrolysis mixed with calcium catalyst. This approach involves the optimization of least squares (LS) with the Coats-Redfern integral method to avoid mathematical biases that may appear when applying the linear regression approach. The method was applied to the TGA data of pyrolysis of corn cob and corn cob mixed with 20 or 40 % by weight of CaO or CaCO₃ under N₂ atmosphere at temperatures between 25 and 700 °C. For raw cob, r² reaches 0.997. For corn cob mixed with 20 % by weight of CaO or CaCO₃, r² reached 0.996–0.998, and for 40 % by weight, r² reached 0.836–0.957. Applying this method, the activation energy (EA) value of the raw cob pyrolysis is 58.35 kJ mol⁻¹, while the addition of CaO or CaCO₃ increases the EA to 69.33 and 66.07 kJ mol⁻¹, respectively. The method is simple to use and allows reliable values of kinetic parameters.

Original language	English
Article number	e10195
Journal	Heliyon
Volume	8
Issue number	8
DOIs	https://doi.org/10.1016/j.heliyon.2022.e10195
State	Published - Aug 2022

Bibliographical note

Publisher Copyright:
© 2022 Universidad Pontificia Bolivariana

Keywords

Biofuel
Biomass
Energy
Pyrolysis

Access to Document

10.1016/j.heliyon.2022.e10195

Cite this

@article{3e657cedc73c4fab9697e04c1e82623b,

title = "A new approach to obtain kinetic parameters of corn cob pyrolysis catalyzed with CaO and CaCO3",

abstract = "A new approach is proposed to obtain the kinetic parameters of biomass pyrolysis mixed with calcium catalyst. This approach involves the optimization of least squares (LS) with the Coats-Redfern integral method to avoid mathematical biases that may appear when applying the linear regression approach. The method was applied to the TGA data of pyrolysis of corn cob and corn cob mixed with 20 or 40 % by weight of CaO or CaCO3 under N2 atmosphere at temperatures between 25 and 700 °C. For raw cob, r2 reaches 0.997. For corn cob mixed with 20 % by weight of CaO or CaCO3, r2 reached 0.996–0.998, and for 40 % by weight, r2 reached 0.836–0.957. Applying this method, the activation energy (EA) value of the raw cob pyrolysis is 58.35 kJ mol−1, while the addition of CaO or CaCO3 increases the EA to 69.33 and 66.07 kJ mol−1, respectively. The method is simple to use and allows reliable values of kinetic parameters.",

keywords = "Biofuel, Biomass, Energy, Pyrolysis",

author = "{Arenas Castiblanco}, Erika and Montoya, {Juan Henao} and Rinc{\'o}n, {Gabriela Valencia} and Zulamita Zapata-Benabithe and Rafael G{\'o}mez-V{\'a}squez and Camargo-Trillos, {Diego A.}",

note = "Publisher Copyright: {\textcopyright} 2022 Universidad Pontificia Bolivariana",

year = "2022",

month = aug,

doi = "10.1016/j.heliyon.2022.e10195",

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T1 - A new approach to obtain kinetic parameters of corn cob pyrolysis catalyzed with CaO and CaCO3

AU - Arenas Castiblanco, Erika

AU - Montoya, Juan Henao

AU - Rincón, Gabriela Valencia

AU - Zapata-Benabithe, Zulamita

AU - Gómez-Vásquez, Rafael

AU - Camargo-Trillos, Diego A.

PY - 2022/8

Y1 - 2022/8

N2 - A new approach is proposed to obtain the kinetic parameters of biomass pyrolysis mixed with calcium catalyst. This approach involves the optimization of least squares (LS) with the Coats-Redfern integral method to avoid mathematical biases that may appear when applying the linear regression approach. The method was applied to the TGA data of pyrolysis of corn cob and corn cob mixed with 20 or 40 % by weight of CaO or CaCO3 under N2 atmosphere at temperatures between 25 and 700 °C. For raw cob, r2 reaches 0.997. For corn cob mixed with 20 % by weight of CaO or CaCO3, r2 reached 0.996–0.998, and for 40 % by weight, r2 reached 0.836–0.957. Applying this method, the activation energy (EA) value of the raw cob pyrolysis is 58.35 kJ mol−1, while the addition of CaO or CaCO3 increases the EA to 69.33 and 66.07 kJ mol−1, respectively. The method is simple to use and allows reliable values of kinetic parameters.

AB - A new approach is proposed to obtain the kinetic parameters of biomass pyrolysis mixed with calcium catalyst. This approach involves the optimization of least squares (LS) with the Coats-Redfern integral method to avoid mathematical biases that may appear when applying the linear regression approach. The method was applied to the TGA data of pyrolysis of corn cob and corn cob mixed with 20 or 40 % by weight of CaO or CaCO3 under N2 atmosphere at temperatures between 25 and 700 °C. For raw cob, r2 reaches 0.997. For corn cob mixed with 20 % by weight of CaO or CaCO3, r2 reached 0.996–0.998, and for 40 % by weight, r2 reached 0.836–0.957. Applying this method, the activation energy (EA) value of the raw cob pyrolysis is 58.35 kJ mol−1, while the addition of CaO or CaCO3 increases the EA to 69.33 and 66.07 kJ mol−1, respectively. The method is simple to use and allows reliable values of kinetic parameters.

KW - Biofuel

KW - Biomass

KW - Energy

KW - Pyrolysis

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