Isothermal kinetic analysis of thermal decomposition of woody biomass: The thermogravimetric study

Vitázek, I.; Tkáč, Zdenko

doi:10.1063/1.5114776

Cited by 2 publications

(5 citation statements)

References 17 publications

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“…The R 2 values calculated for the different reaction models are listed in Table 2. This is in agreement with the previously published results by Liu et al [15] and Vitázek and Tkáč [37]. In both studies, the kinetic analyses show that if the first-order reaction model (see Table 1) is used, the best final fit of the Arrhenius function is achieved.…”

Section: Kinetic Analysissupporting

confidence: 92%

Section: Resultsmentioning

confidence: 98%

“…This assumption is based on isothermal measurements [11], where due to the slower decomposition of lignin, different heating rates could lead to different explanations of the measurements. The last peak on the dTG curve, in the temperature range of 350-500 °C, is linked to the combustion of the char residues [37]. Based on these results, the isothermal thermogravimetric analyses were carried out using the temperatures 250 °C, 270 °C, and 290 °C, which correspond to the main decomposition region.…”

Section: Resultsmentioning

confidence: 99%

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Isothermal Kinetic Analysis of the Thermal Decomposition of Wood Chips from an Apple Tree

et al. 2021

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The thermal decomposition of wood chips from an apple tree is studied in a static air atmosphere under isothermal conditions. Based on the thermogravimetric analysis, the values of the apparent activation energy and pre-exponential factor are 34 ± 3 kJ mol−1 and 391 ± 2 min−1, respectively. These results have also shown that this process can be described by the rate of the first-order chemical reaction. This reaction model is valid only for a temperature range of 250–290 °C, mainly due to the lignin decomposition. The obtained results are used for kinetic prediction, which is compared with the measurement. The results show that the reaction is slower at higher values of degree of conversion, which is caused by the influence of the experimental condition. Nevertheless, the obtained kinetic parameters could be used for the optimization of the combustion process of wood chips in small-scale biomass boilers.

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Section: Kinetic Analysissupporting

confidence: 92%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

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Isothermal Kinetic Analysis of the Thermal Decomposition of Wood Chips from an Apple Tree

et al. 2021

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“…The temperature of the pyrolysis product transfer line and injection valve was set to 300 • C to prevent the recondensation of vaporized bio-oil within the instrumentation. The GC was furnished with a capillary column (TR-5MS) and operated in split mode, wherein the split ratio and total flow rate used were 50:1 and 50 mL/min, respectively. The GC oven initial temperature was 40 • C (holding 2 min), heated to 120 • C (ramping rate of 5 • C/min), and then increased to 200 • C (holding 15 min at ramping rate of 10 • C/min).…”

Section: Catalytic Fast Pyrolysis Of Forestry Wood Waste (Vernicia Fomentioning

confidence: 99%

“…The thermal decomposition of wood biomass could be influenced by various factors such as temperature, chemical composition, heating rate, etc. [50]. In order to investigate the effect of heating rate on the thermal decomposition of VF and nano-VF samples, the heating rate of 25 • C and 55 • C were recorded, as shown in Figures 2 and 3.…”

Section: Catalytic Fast Pyrolysis Of Forestry Wood Waste (Vernicia Fomentioning

confidence: 99%

Catalytic Fast Pyrolysis of Forestry Wood Waste for Bio-Energy Recovery Using Nano-Catalysts

Yue

Yang

et al. 2019

Energies

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Fast pyrolysis is envisioned as a promising technology for the utilization of forestry wood waste (e.g., widely available from tree logging) as resources. In this study, the potential of an innovative approach was explored to convert forestry wood waste of Vernicia fordii (VF) into energy products based on fast pyrolysis combined with nano-catalysts. The results from fast pyrolysis using three types of nano-catalysts showed that the distribution and composition of the pyrolytic product were affected greatly by the type of nano-catalyst employed. The use of nano-Fe2O3 and nano-NiO resulted in yields of light hydrocarbons (alkanes and olefins) as 38.7% and 33.2%, respectively. Compared to the VF sample, the use of VF-NiO and VF-Fe2O3 led to significant increases in the formation of alkanes (e.g., from 14% to 26% and 31%, respectively). In addition, the use of nano-NiO and nano-Fe2O3 catalysts was found to promote the formation of acid, aromatics, and phenols that can be used as chemical feedstocks. The NiO catalyst affected the bio-oil composition by promoting lignin decomposition for the formation of aromatics and phenolics, which were increased from 9.52% to 14.40% and from 1.65% to 4.02%, respectively. Accordingly, the combined use of nano-catalysts and fast pyrolysis can be a promising technique for bio-energy applications to allow efficient recovery of fuel products from forestry wood waste.

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Isothermal kinetic analysis of thermal decomposition of woody biomass: The thermogravimetric study

Cited by 2 publications

References 17 publications

Isothermal Kinetic Analysis of the Thermal Decomposition of Wood Chips from an Apple Tree

Isothermal Kinetic Analysis of the Thermal Decomposition of Wood Chips from an Apple Tree

Catalytic Fast Pyrolysis of Forestry Wood Waste for Bio-Energy Recovery Using Nano-Catalysts

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