Pyrolytic Pathway of Wheat Straw Pellet by the Thermogravimetric Analyzer
Article
Nath, Bidhan, Bowtell, Les, Chen, Guangnan, Graham, Elizabeth and Nguyen-Huy, Thong. 2024. "Pyrolytic Pathway of Wheat Straw Pellet by the Thermogravimetric Analyzer." Energies. 17 (15). https://doi.org/10.3390/en17153693
Article Title | Pyrolytic Pathway of Wheat Straw Pellet by the Thermogravimetric Analyzer |
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ERA Journal ID | 123161 |
Article Category | Article |
Authors | Nath, Bidhan, Bowtell, Les, Chen, Guangnan, Graham, Elizabeth and Nguyen-Huy, Thong |
Journal Title | Energies |
Journal Citation | 17 (15) |
Number of Pages | 21 |
Year | 2024 |
Publisher | MDPI AG |
Place of Publication | Switzerland |
ISSN | 1996-1073 |
Digital Object Identifier (DOI) | https://doi.org/10.3390/en17153693 |
Web Address (URL) | https://www.mdpi.com/1996-1073/17/15/3693 |
Abstract | The study of the thermokinetics of two types of wheat straw pellets, T1 (100% wheat straw) and T2 (70% wheat straw, 10% each of bentonite clay, sawdust, and biochar), under a nitrogen atmosphere (31–800 °C and 5, 10, and 20 °C/min heating rates) using model-free and model-based approaches by TG/DTG data, revealed promising results. While model-free methods were not suitable, model-based reactions, particularly Fn (nth-order phase interfacial) and F2 (second-order) models, effectively described the three-phase consecutive thermal degradation pathway (A→B, C→D, and D→E). The activation energy (Eα) for phases 2 and 3 (Fn model) averaged 136.04 and 358.11 kJ/mol for T1 and 132.86 and 227.10 kJ/mol for T2, respectively. The pre-exponential factor (lnA) varied across heating rates and pellets (T2: 38.244–2.9 × 109 1/s; T1: 1.2 × 102–5.45 × 1014 1/s). Notably, pellets with additives (T2) exhibited a higher degradable fraction due to lower Eα. These findings suggest a promising potential for utilizing wheat straw pellet biomass as a bioenergy feedstock, highlighting the practical implications of this research. |
Keywords | activation energy; model-based method; pre-exponential factor; pyrolysis; thermokinetics; wheat straw pellet |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401703. Energy generation, conversion and storage (excl. chemical and electrical) |
Byline Affiliations | School of Agriculture and Environmental Science |
School of Engineering | |
Queensland University of Technology | |
Centre for Applied Climate Sciences | |
Thanh Do University, Vietnam |
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