Thermal and Kinetic Behaviors of Fallen Leaves and Waste Tires Using Thermogravimetric Analysis

Shi, Shukai; Zhou, Xiaoyan; Chen, Weimin; Wang, Xin; Nguyen, Thiphuong; Chen, Minzhi

doi:10.15376/biores.12.3.4707-4721

Cited by 13 publications

(5 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even so, authors' opinion is that it is acceptable because same deviations are presented in other researches [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Results Of the Kinetic Analysismentioning

confidence: 90%

Thermogravimetric kinetic study of solid recovered fuels pyrolysis

Radojević

Balac

Jovanović

et al. 2018

Hem Ind

View full text Add to dashboard Cite

In the Republic of Serbia there are significant quantities of coffee and tire wastes that can be utilized as Solid Recovered Fuel (SRF) and used as an additional fuel for co?combustion with coal and biomass in energy production and cement industry sectors. Differences between SRF and base fuel are a cause of numerous problems in design of burners. The objective of this study was to determine the kinetic parameters for the thermochemical conversion of selected SRF using Simultaneous Thermal Analysis (STA). Samples of coffee and tire waste were used for the experimental tests. Thermal analysis was carried out in nitrogen atmosphere at three different heating rates 10, 15 and 20 K/min for each sample, while it was heated from room temperature up to 900?C. Two sample sizes x <0.25 mm and 0.25 < x <0.5 mm of each SRF were used in experiments, in order to obtain reliable Thermal Gravimetric Analysis (TGA) data for estimation of kinetic parameters for SRF pyrolysis. Experimental results were used for determination of pre-exponential factor and activation energy according to methods presented in the literature. Presented research provides valuable data of coffee and tire waste that can be used for the burners design.

show abstract

“…Even so, authors' opinion is that it is acceptable because same deviations are presented in other researches [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Results Of the Kinetic Analysismentioning

confidence: 90%

Thermogravimetric kinetic study of solid recovered fuels pyrolysis

Radojević

Balac

Jovanović

et al. 2018

Hem Ind

View full text Add to dashboard Cite

show abstract

“…The dependence of the "thermal residual mass" on temperature for PEO powder (left) PEO nanofibers spun from water solution (middle) and PEO nanofibers obtained from chloroform solutions subjected to different heating rates. In the left and middle graphs, the symbols identify experimental data and the dotted lines represent best fits obtained by using Equation (23). In the right panel the broader lines represent experimental data, and the narrow darker lines represent the best fits obtained by using Equation ( 23 The experimental data were represented by various symbols for PEO powder (left graph) and PEO mats obtained from water solutions (middle graph), while the best fit was represented by dotted lines.…”

Section: Resultsmentioning

confidence: 99%

“…A similar expression was derived by Flynn-Wall-Ozawa (FWO). 15 More detailed calculations suggested that the actual slope within the Flynn-Wall-Ozawa approximation is 1.052 E A / R 19,22 or 0.4567 E A /R 20,[23][24][25] and not precisely E A /R (where R is the ideal gas constant). While some authors claimed that this model does not consider the details on the thermal degradation, it is essential to note that F(γ) should not depend explicitly on time or temperature.…”

Section: Connections To Existing Theories and Modelsmentioning

confidence: 99%

On the thermogravimetric analysis of polymers: Polyethylene oxide powder and nanofibers

Oriretan

Chipara

Uddin

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

Thermogravimetric analysis of polyethylene oxide (powder and nanofibers obtained by force spinning water or chloroform solutions of polyethylene oxide) was studied using different theoretical models such as Friedman and Flynn-Wall-Ozawa. A semiempirical approach for estimating the "sigmoid activation energy" from the thermal degradation was suggested and confirmed by the experimental data on PEO powder and nanofibers' mats. The equation allowed for calculating a "sigmoid activation energy" from a single thermogram using a single heating rate without requiring any model for the actual complex set of chemical reactions involved in the thermal degradation process. For PEO (powder and nanofibers obtained from water solutions), the "sigmoid activation energy" increased as the heating rate was increased. The sigmoid activation energy for PEO mats obtained from chloroform solutions exhibited a small decrease as the heating rate was increased. Thermograms' derivatives were fitted to determine the coordinates of the inflection points. The "sigmoid activation energy" was compared to the activation energy determined from the Flynn-Wall-Ozawa model. Similarities between the thermal degradation of polyethylene oxide powder and of the nanofibers obtained from water solutions were discussed. Significant differences between the sigmoid activation energies of the mats obtained from water and chloroform solutions were reported.

show abstract

“…Later, those Ea were inserted into the Coats-Redfern adjustment model to calculate the pre-exponential factors based on a first-order reaction speed. It is important to note that the amount of hydrogen reported in the elemental analysis of the leaves + tires mixture was 6.25% [36]. A different study of discarded tires determined an average Ea of 162.8 ± 23.2 kJ mol −1 , using the KAS and FWO methods and the Master Plot approach in a mass conversion range (a) of 0.20-0.80.…”

Section: Kinetics Of Lignocellulosic Materialsmentioning

confidence: 99%

Analysis of Pyrolysis Kinetic Parameters Based on Various Mathematical Models for More than Twenty Different Biomasses: A Review

et al. 2022

View full text Add to dashboard Cite

Today, energy use is an important and urgent issue for economic development worldwide. It is expected that raw material in the form of biomass and lignocellulosic residues will become increasingly significant sources of sustainable energy in the future because they contain components such as cellulose, hemicellulose, lignin, and extractables with high energy-producing potential. It is then essential to determine the behavior of these materials during thermal degradation processes, such as pyrolysis (total or partial absence of air/oxygen). Pyrolyzed biomass and its residual fractions can be processed to produce important chemical products, such as hydrogen gas (H2). Thermogravimetric (TGA) analysis and its derivative, DTG, are analytical techniques used to determine weight loss as a function of temperature or time and associate changes with certain degradation and mass conversion processes in order to evaluate kinetic properties. Applying kinetic methods (mathematical models) to degradation processes permits obtaining several useful parameters for predicting the behavior of biomass during pyrolysis. Current differential (Friedman) and integral (Flynn–Wall–Ozawa, Kissinger–Akahira–Sunose, Starink, Popescu) models vary in their range of heating speeds (β) and degree of advance (α), but some (e.g., Kissinger’s) do not consider the behavior of α. This article analyzes the results of numerous kinetic studies using pyrolysis and based on thermogravimetric processes involving over 20 distinct biomasses. The main goal of those studies was to generate products with high added value, such as bio-char, methane, hydrogen, and biodiesel. This broad review identifies models and determines the potential of lignocellulosic materials for generating bioenergy cleanly and sustainably.

show abstract

Thermal and Kinetic Behaviors of Fallen Leaves and Waste Tires Using Thermogravimetric Analysis

Cited by 13 publications

References 33 publications

Thermogravimetric kinetic study of solid recovered fuels pyrolysis

Thermogravimetric kinetic study of solid recovered fuels pyrolysis

On the thermogravimetric analysis of polymers: Polyethylene oxide powder and nanofibers

Analysis of Pyrolysis Kinetic Parameters Based on Various Mathematical Models for More than Twenty Different Biomasses: A Review

Contact Info

Product

Resources

About