| Acronym | Meaning |
| PS | Pine sawdust |
| PSKCl-21 | The sample was obtained by mixing PS and KCl with a weight ratio of 2:1 |
| PSKCl-11 | The sample was obtained by mixing PS and KCl with a weight ratio of 1:1 |
| PSKCl-12 | The sample was obtained by mixing PS and KCl with a weight ratio of 1:2 |
| TGA | Thermogravimetric analysis |
| A | Pre-exponential factor |
| ΔH | Enthalpy |
| ΔG | Gibbs free energy |
| ΔS | Entropy |
| FWO | Flynn-Wall-Ozawa |
| KAS | Kissinger-Akahira-Sunose |
| E | Activation energy |
| T | Absolute temperature |
| R2 | Correlation coefficient |
| K | Boltzmann constant |
| Tm | The peak temperature for the DTG curve |
| h | Plank constant |
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