Thermo-kinetics of Forest Waste Using Model-Free Methods
Thermal behaviour of pine needles (Pinus Roxburghii) is examined through a thermogravimetry technique. The dried samples of pine needles undergo the non-isothermal decomposition at temperature range of 308-1173 K. The heating rates used for experimental purposes are: 5 ◦C min−1 , 10 ◦C min−1 an...
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| Formato: | article |
| Lenguaje: | EN ES |
| Publicado: |
Pontificia Universidad Javeriana
2019
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/55be4607ce2a4bed83efd64466b68ac0 |
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| Sumario: | Thermal behaviour of pine needles (Pinus Roxburghii) is examined through a
thermogravimetry technique. The dried samples of pine needles undergo the
non-isothermal decomposition at temperature range of 308-1173 K. The heating rates
used for experimental purposes are: 5 ◦C min−1
, 10 ◦C min−1
and 15 ◦C min−1
. Kinetic
parameters of thermal decomposition reactions of pine needles are obtained through
the model-free schemes. The estimated values of activation energy and frequency factor
derived from Kissinger method are 132.77 kJ mol−1
and 13.15 × 107 min−1
, respectively.
Furthermore, the averaged values of the same kinetics parameters retrieved from the
isoconversional methods are 82.38 kJ mol−1
and 74.833 kJ mol−1
, 25.42 × 1013 min−1
and 13.449 × 1010 min−1
, respectively. Instead of the Flynn-Wall- Ozawa (FWO) and
Kissinger- Akahira- Sunrose (KAS) schemes, the kinetic parameters derived from the
Kissinger method are relatively promising for the thermal decomposition process, since
the kinetic parameters are highly affected by intermediate stages and overlapping of the
concurrent reaction occurred during pyrolysis. |
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