Thermal degradation of beech wood with thermogravimetry/Fourier transform infrared analysis

Ding, Yanming; Ezekoye, Ofodike A.; Lu, Shouxiang; Wang, Changjian

doi:10.1016/j.enconman.2016.05.007

Cited by 159 publications

(27 citation statements)

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“…However, the above researches are not enough to reveal the pyrolysis dynamics of engineering plastic waste CPVC, so the aim of current paper is to explore its pyrolysis behaviors and obtained appropriate kinetic parameters.Knowledge of pyrolysis kinetics can help provide better understanding and planning of important industrial processes [24], such as their application in pyrolysis model [25] and direct combustion [26].Model-fitting and model-fitting methods are the common ways to explore the kinetic parameters. Model-fitting method consists of fitting different models to the experimental data for the best statistical fit but with the inability to determine the reaction model [27]. However, model-free method can come over this problem without prior knowledge of the reaction model and estimate the kinetic parameters at specific extent of conversion to provide appropriate search ranges for model-fitting method [28].…”

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confidence: 99%

“…Model-fitting and model-fitting methods are the common ways to explore the kinetic parameters. Model-fitting method consists of fitting different models to the experimental data for the best statistical fit but with the inability to determine the reaction model [27]. However, model-free method can come over this problem without prior knowledge of the reaction model and estimate the kinetic parameters at specific extent of conversion to provide appropriate search ranges for model-fitting method [28].…”

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confidence: 99%

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Thermal Decomposition Mechanism and Kinetics Study of Plastic Waste Chlorinated Polyvinyl Chloride

et al. 2019

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Chlorinated polyvinyl chloride (CPVC), as a new type of engineering plastic waste, has been used widely due to its good heat resistance, mechanical properties and corrosion resistance, while it has become an important part of solid waste. The pyrolysis behaviors of CPVC waste were analyzed based on thermogravimetric experiments to explore its reaction mechanism. Compared with polyvinyl chloride (PVC) pyrolysis, CPVC pyrolysis mechanism was divided into two stages and speculated to be dominated by the dehydrochlorination and cyclization/aromatization processes. A common model-free method, Flynn-Wall-Ozawa method, was applied to estimate the activation energy values at different conversion rates. Meanwhile, a typical model-fitting method, Coats-Redfern method, was used to predict the possible reaction model by the comparison of activation energy obtained from model-free method, thereby the first order reaction-order model and fourth order reaction-order model were established corresponding to these two stages. Eventually, based on the initial kinetic parameter values computed by model-free method and reaction model established by model-fitting method, kinetic parameters were optimized by Shuffled Complex Evolution algorithm and further applied to predict the CPVC pyrolysis behaviors during the whole temperature range.

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Thermal Decomposition Mechanism and Kinetics Study of Plastic Waste Chlorinated Polyvinyl Chloride

et al. 2019

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“…Ash (Fraxinus) wood sawdust, Ea (198 kJ/mol -202 kJ/mol) is similar to waste tea pyrolysis (Ea: 208kJ/mol -223 kJ/mol) (Tian et al 2016). The results still show that Ash sawdust was not so easy to pyrolyse compared to beech wood (Ea: 147-174kJ/mol) (Ding et al 2016), moso bamboo (Ea: 96-113kJ/mol) (Chen, Zhou, and Zhang 2014), and other biomass with lower activation energy , , (Slopiecka, Bartocci, and Fantozzi 2012), (Sonobe and Worasuwannarak 2008).…”

Section: Activation Energymentioning

confidence: 88%

“…However, investigation of the material properties has to be made to ensure suitability for any probable bioenergy production like bio-char. Several researchers have analyzed and characterized a number of biomass resources including beech wood (Ding et al 2016), pine wood (Mishra, Kumar, and Bhaskar 2015), bamboo (Chen, Liu, et al 2015) among others for their energy Published by Taylor and Francis. This is the Author Accepted Manuscript issued with: Creative Commons Attribution Non-Commercial License (CC:BY:NC 4.0).…”

Section: Introductionmentioning

confidence: 99%

“…Pyrolysis and torrefaction (Chen, Zheng, et al 2015) are key methods used for processing biomass materials for potential energy production. Thermogravimetric (TG) techniques have been used to study pyrolysis since they are effective and provide a controllable atmosphere and heating rate, with negligible thermal gradients and mass transport (Ding et al 2016). TG can be used alone or combined with other techniques like spectrometry (Gu et al 2014) to study biomass materials.…”

Section: Introductionmentioning

confidence: 99%

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Determination of kinetic parameters and thermodynamic properties for ash (Fraxinus) wood sawdust slow pyrolysis by thermogravimetric analysis

Nyombi

Williams

Wessling

2018

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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Ash (Fraxinus) wood sawdust pyrolysis under nitrogen was conducted using 2, 5, 10, 15 and 20 o C/min heating rates. Friedman and Starink methods were used for kinetic analysis while y(α) master plots were used for pyrolysis mechanisms prediction. The mean activation energy were 198 and 202 kJ/mol for Friedman and Starink respectively. The master plots predicted that the pyrolysis process could be a combination of diffusion, geometrical contraction, nucleation, and reaction order models. The pre-exponential factors were in the range 10 12 to 10 19 s-1. Gibbs free energy was 180-185 kJ/mol. The entropy values were negative up to α = 0.75 indicating high orderliness of products relative to reactants but changed to positive at higher conversions implying likely disorderliness of the products compared to reactants. The calorific value of Ash (Fraxinus) wood sawdust was 18.3MJ/kg.

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Evaluation on thermal pyrolysis of biomass straw waste: Focusing aspects of products yields, syngas emissions and solid products characterization

Yao,

Zhou,

et al. 2024

Asia-Pacific J Chem Eng

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In this study, a systematic and quantitative investigation of the pyrolysis characteristics of biomass was conducted in a fixed‐bed tubular reactor, and the influence of pyrolysis temperature on product yields, gas emission characteristics, and syngas compositions as well as physicochemical characterization of resulting solids (i.e., char/ash morphologies, mineral transformations, and elemental compositions) was explored in detail. The pyrolysis experiments were performed under N2, and the resulting solid characterization was detected by XRD, SEM, and EDX. The results indicated that with increasing the pyrolysis temperature from 400 to 800°C, the gaseous product yields increased from 54.9% to 66.7%, while the solid product yield showed a reverse trend, varying within 27.7%–40.5%. Meanwhile, the volume fraction of H2 in syngas increased from 7% to 33%, while the CO2 presented an opposite trend, suggesting that high temperature favored H2 formation and inhibited CO2 formation. On the whole, the CO and CO2 emissions were prior to CH4, H2, and CnHm in sequence. A large amount of sylvite (KCl), quartz (SiO2), dolomite (CaMg(CO3)2), and pyroxene (CaMgSi2O6) in the resulting solids were identified in crystal phases. Higher pyrolysis temperature had a significant influence on solid microstructures, resulting in a relatively higher slagging tendency due to low melting eutectics containing K‐rich and Ca‐rich minerals.

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Thermal degradation of beech wood with thermogravimetry/Fourier transform infrared analysis

Cited by 159 publications

References 40 publications

Thermal Decomposition Mechanism and Kinetics Study of Plastic Waste Chlorinated Polyvinyl Chloride

Thermal Decomposition Mechanism and Kinetics Study of Plastic Waste Chlorinated Polyvinyl Chloride

Determination of kinetic parameters and thermodynamic properties for ash (Fraxinus) wood sawdust slow pyrolysis by thermogravimetric analysis

Evaluation on thermal pyrolysis of biomass straw waste: Focusing aspects of products yields, syngas emissions and solid products characterization

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