EconPapers    
Economics at your fingertips  
 

Pyrolysis and Combustion Behavior of Flax Straw as Biomass: Evaluation of Kinetic, Thermodynamic Parameters, and Qualitative Analysis of Degradation Products

Bahareh Vafakish, Amin Babaei-Ghazvini, Mahmood Ebadian and Bishnu Acharya (bishnu.acharya@usask.ca)
Additional contact information
Bahareh Vafakish: Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada
Amin Babaei-Ghazvini: Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada
Mahmood Ebadian: Prairie Clean Energy, 2221 Cornwall Street, Regina, SK S4P 0X9, Canada
Bishnu Acharya: Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada

Energies, 2023, vol. 16, issue 19, 1-20

Abstract: This study describes an investigation of the pyrolysis and combustion of flax straw as biofuel, focusing on the physicochemical properties and kinetic and thermodynamic parameters, and evaluates the type of degradation products using the thermogravimetry analysis–Fourier transform infrared spectroscopy (TGA-FTIR) technique. Pyrolysis and combustion processes were studied via thermogravimetric analysis at different heating rates of 5-10-15 and 20 °C min, one using three isoconversional methods and one using a model-fitting method. The activation energies, frequency factors, and thermodynamic parameters of flax straw biomass were investigated using different models. The obtained activation energy values for pyrolysis varied between 101.0 and 109.6 kJ mol −1 and for combustion were between 203.3 and 239.2 kJ mol −1 . The frequency factors were determined to be 1.7 × 109 for pyrolysis and 1.5 × 1017 s −1 for combustion. The change in Gibbs free energy (Δ G ) for the pyrolysis of flax straw was calculated to be 162.6 kJ mol −1 , whereas for combustion it increased to 203.9 kJ mol −1 . A notable contrast between the volatiles produced by pyrolysis and combustion is evident from the real-time analysis of the degradation products. Specifically, carboxylic acids, aromatics, alkanes, and alcohols are the principal degradation products during pyrolysis, while carbon dioxide is the primary component produced during combustion. These encouraging research outcomes regarding flax straw pyrolysis and combustion can broaden its application in bioenergy and biofuel, thus contributing significantly to it for resource recovery.

Keywords: pyrolysis; combustion; kinetic analysis; bioenergy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/19/6932/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/19/6932/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:19:p:6932-:d:1252795

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager (indexing@mdpi.com).

 
Page updated 2024-12-28
Handle: RePEc:gam:jeners:v:16:y:2023:i:19:p:6932-:d:1252795