Physicochemical analysis and kinetic study of orange bagasse at higher heating rates

Bhattacharjee, Neelanjan; Biswas, Amitava

doi:10.1016/j.fuel.2020.117642

Cited by 21 publications

(5 citation statements)

References 61 publications

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“…It can be observed that changes in the activation energy deeply depended on the conversion rate, reflecting that the combustion process was complex. 35 As shown in Figure 3, the activation energy increased with the increase of conversion rate, regardless of the KAS or OFW method. With the increase of the conversion rate from 0.1 to 0.8, the activation energy ranged from 85.67 to 143.01 kJ/mol for the KAS method and 88.54 to 151.15 kJ/ mol for the OFW method.…”

Section: Resultsmentioning

confidence: 84%

“…The relationship between the activation energy versus the conversion rate is depicted in Figure . It can be observed that changes in the activation energy deeply depended on the conversion rate, reflecting that the combustion process was complex . As shown in Figure , the activation energy increased with the increase of conversion rate, regardless of the KAS or OFW method.…”

Section: Results and Discussionmentioning

confidence: 90%

“…It is reported that the heating rate has a significant effect on the combustion process. It can affect the maximum decomposition rate, DTG peak temperature, and final residual mass after the combustion. − Depending on the heating rate, the burnouts are achieved quicker at a lower temperature or later at a higher temperature …”

Section: Results and Discussionmentioning

confidence: 99%

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Study of Combustion Characteristics and Kinetics of Agriculture Briquette Using Thermogravimetric Analysis

et al. 2021

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The present paper was aimed to investigate the physicochemical properties and combustion characteristics of corn straw briquette as a fuel energy. The results of physicochemical properties displayed that corn straw briquette has higher volatile matter, lower ash content, and higher heating value. Combustion characteristics and kinetic analysis were investigated using thermogravimetry analysis at various heating rates of 10, 15, and 20 °C/min. It was observed that the maximum burning rate shifted to a higher temperature as the heating rate increased. In addition, a lower heating rate would help in better heat transfer, leading to less mass residual. In contrast, the combustion characteristic index showed a nearly 2-fold increase under a higher heating rate, indicating a good combustion performance. The combustion kinetics were expressed using isoconversional methods with Kissinger− Akahira−Sunose and Ozawa−Flynn−Wall methods, which authenticated the average activation energy at 108.85 and 114.42 kJ/mol, respectively. These results can provide a theoretical basis and data support for further utilization of agriculture biomass briquette.

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Section: Resultsmentioning

confidence: 84%

Section: Results and Discussionmentioning

confidence: 90%

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Study of Combustion Characteristics and Kinetics of Agriculture Briquette Using Thermogravimetric Analysis

et al. 2021

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“…The thermal degradation graph given in Figure indicates that the thermal degradation is shifted to a higher temperature zone with the increase of heating rates; however, the trend remains similar for all of the samples. The lower heating rates are associated with improved heat transfer efficiency, which can provide slow heating conditions for polymer particles to transmit heat inside the sample, resulting in a more complete thermal conversion reaction. , At slow heating rates, it is presumed that the plastic’s temperature profile along its cross section would be linear and evenhanded with its outer surface. Due to an extended heating period during a low heating rate, the innermost layer of plastic can achieve the similar temperature at a certain moment.…”

Section: Resultsmentioning

confidence: 99%

Thermo-Kinetics of Chemical Recycling of Real-World Waste Plastics

Negi,

Dubey,

Palodkar

et al. 2023

ACS Sustainable Chem. Eng.

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An enormous amount of plastic waste is engendered diurnal, and its severe environmental impacts prompted the development of an apt recycling methodology. In this view, an environmentally friendly and commercially feasible way of utilizing waste plastics for producing useful products requires a comprehensive understanding of their thermal splintering. Therefore, we evaluate the kinetics and thermodynamics of the thermal breakdown (pyrolysis) of real-world waste plastics (majorly composed of polyolefins) like mixed waste plastics, packaging plastic bag waste, personal protective equipment kit waste, and milk pouch waste obtained from the local dumping sites. For this, these waste plastics are cracked at multiple heating rates of 5, 10, and 20 °C min −1 in an inert atmosphere. Besides, the thermogravimetric analyses and iso-conversional models are employed to evaluate the essential thermo-kinetics. The average activation energy of the concerned waste plastics samples ranges between 112.97 and 170.16 kJ mol −1 . Besides, the thermodynamic parameters like Gibbs free energy, enthalpy, and entropy lie in the ranges of 226.4 to 229.6, 113.3 to 163.7, and −0.085 to −0.14 kJ mol −1 , respectively, for the concerned waste plastic samples. The cracking kinetic analysis confirmed that the mixed waste plastics consume significantly higher energy than the other types of waste plastics to initiate the thermal breakdown reaction. Besides, the model of Flynn−Wall−Ozawa has closely predicted the experimental data than the models of Kissinger−Akahira−Sunose and Starink, due to its rigorousness. This thermo-kinetic investigation can contribute towards comprehensive understanding and utilization of waste plastics collected from actual dumping sites for optimizing the real-time reaction devices and producing useful petrochemical products like diesel, gasoline, benzene, toluene, and xylene in an eco-friendly and sustainable way.

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“… 96 Combining eqn (2) and (3) and considering the TGA being carried out in a non-isothermal way, the temperature becomes a function of time ( t ), which increases with a constant heating ratio ( β ). Thus, the reaction rate, in its integrated form, can be described by eqn (4) : 97 …”

Section: Methodsmentioning

confidence: 99%

Catalytic pyrolysis of coconut oil with Ni/SBA-15 for the production of bio jet fuel

et al. 2022

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Physicochemical analysis and kinetic study of orange bagasse at higher heating rates

Cited by 21 publications

References 61 publications

Study of Combustion Characteristics and Kinetics of Agriculture Briquette Using Thermogravimetric Analysis

Study of Combustion Characteristics and Kinetics of Agriculture Briquette Using Thermogravimetric Analysis

Thermo-Kinetics of Chemical Recycling of Real-World Waste Plastics

Catalytic pyrolysis of coconut oil with Ni/SBA-15 for the production of bio jet fuel

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