Pyrolysis kinetics and thermodynamic parameters of plastic grocery bag based on thermogravimetric data using iso-conversional methods

Saha, Dipankar; Sinha, Abhijit; Pattanayak, Satyajit; Roy, Bidesh

doi:10.1007/s13762-020-03106-z

Cited by 31 publications

(9 citation statements)

References 61 publications

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“…This value indicates a feasible reaction to produce bioenergy from BCS pyrolysis, as little additional energy is required to achieve product generation, such as those reported by Mumbach et al and Sangaré et al [ 18 , 22 ]. Therefore, this indicates that favorable conditions exist for the formation of activated complexes and ease of pyrolysis reaction [ 18 , 50 ], i.e., pyrolysis can be carried out by providing this minimal additional energy difference [ 6 ].…”

Section: Resultsmentioning

confidence: 99%

Pyrolysis Kinetics of Byrsonima crassifolia Stone as Agro-Industrial Waste through Isoconversional Models

et al. 2023

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This study is aimed at the analysis of the pyrolysis kinetics of Nanche stone BSC (Byrsonima crassifolia) as an agro-industrial waste using non-isothermal thermogravimetric experiments by determination of triplet kinetics; apparent activation energy, pre-exponential factor, and reaction model, as well as thermodynamic parameters to gather the required fundamental information for the design, construction, and operation of a pilot-scale reactor for the pyrolysis this lignocellulosic residue. Results indicate a biomass of low moisture and ash content and a high volatile matter content (≥70%), making BCS a potential candidate for obtaining various bioenergy products. Average apparent activation energies obtained from different methods (KAS, FWO and SK) were consistent in value (~123.8 kJ/mol). The pre-exponential factor from the Kissinger method ranged from 105 to 1014 min−1 for the highest pyrolytic activity stage, indicating a high-temperature reactive system. The thermodynamic parameters revealed a small difference between EA and ∆H (5.2 kJ/mol), which favors the pyrolysis reaction and indicates the feasibility of the energetic process. According to the analysis of the reaction models (master plot method), the pyrolytic degradation was dominated by a decreasing reaction order as a function of the degree of conversion. Moreover, BCS has a relatively high calorific value (14.9 MJ/kg) and a relatively low average apparent activation energy (122.7 kJ/mol) from the Starink method, which makes this biomass very suitable to be exploited for value-added energy production.

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Section: Resultsmentioning

confidence: 99%

Pyrolysis Kinetics of Byrsonima crassifolia Stone as Agro-Industrial Waste through Isoconversional Models

et al. 2023

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“…Primary evaluation of any thermochemical conversion process is generally done using TGA. 26,27 Pyrolysis kinetics plays an important role in predicting the thermal decomposition behavior of biomass during pyrolysis. A sequence of simultaneous and reciprocal reactions arises during biomass thermal degradation, which renders an activity complex.…”

Section: Statement Of Noveltymentioning

confidence: 99%

“…ICTAC recommended that the STK method can estimate the activation energy more accurately. 27 Average activation energy calculated form four different model-free methods are shown in Table 3.The average activation energy of the B_1bamboo speciescalculated from Friedman, OFW, KAS, and STK methods is 176.39, 166.20, 165.04, and 164.84 kJ/mol respectively. It is observed that the variation in activation energy calculated from OFW, KAS, and STK method is minimal.…”

Section: 31mentioning

confidence: 99%

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Investigation of kinetic triplets and thermodynamic parameters of different species of bamboo‐biomass from North‐East India

Pattanayak

Loha

2023

Int J of Chemical Kinetics

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Bamboo is abundantly available in India, particularly in the North East regions which can provide a significant energy opportunity in this region. The physicochemical and thermal properties of bamboo species originate from different places are distinct. This study investigates the pyrolysis of 20 different bamboo species from North East regions of India in a thermogravimetric analyser (TGA) at four different heating rates of 10, 20, 30, and 40 K/min. Enormous kinetic and thermodynamic data are presented for 20 varieties of bamboo species. Model‐free kinetic methods are used to calculate the kinetic parameters and their values are compared. The average activation energy of all bamboo species is estimated in the range 145.59–219.15 kJ/mol from the Starink method, the method recommended by International Confederation of Thermal Analysis and Calorimetry (ICTAC). Generalized master plot method is used for the determination of reaction mechanism which reveals that most of the bamboo species follow the second‐order reaction model (F2) during their thermal degradation. The thermodynamic parameters reveal that the pyrolysis process of all bamboo species is endothermic and it reaches near to the thermodynamic equilibrium.

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“…The kinetic parameters of different plastics fluctuate within a certain range, and the activation energy error may primarily be a result of the differences in raw mate-rial sources, heat transfer limitations, and experimental conditions. 50,51…”

Section: Calculation Of Kinetic Parametersmentioning

confidence: 99%

Study on pyrolysis behavior and kinetics of waste plastics with spent FCC catalyst

Shan

Wang

Bian

et al. 2022

Int J of Chemical Kinetics

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Pyrolysis is the most promising method for treating plastic waste since it can convert waste plastics into high value‐added products, which have significant application potential. In this study, kinetic and thermodynamic analyses of spent fluid catalytic cracking (FCC) catalysts were performed for testing their applicability in catalytic cracking of mixed plastics. Thermogravimetric analysis data were obtained at different heating rates under an inert atmosphere, and the synergistic effect between the mixed plastics and activation energy reduction before and after pretreatment of the spent FCC catalysts was discussed. Through a variety of model‐free methods (Flynn‐Wall‐Ozawa, Kissinger‐Akahira‐Sunose, Starink, and Kissinger methods), it is proved that the spent FCC catalyst facilitates the reduction in activation energy required for the pyrolysis of plastics, which is reduced by approximately 13% from 278 to 242 kJ/mol. The catalytic performance of spent FCC catalyst was improved after pretreatment, while its activation energy decreased by approximately 21% from 278 to 220 kJ/mol. The Friedman‐Reich‐Levi method was used to fit the curve, and the number of mechanism functions in plastic pyrolysis was determined according to the slope of the fitting curve. The C‐R method was used in combination with the Malek method to determine the optimal mechanism function. Moreover, kinetic parameters of the spent FCC catalyst for catalytic cracking of plastics were obtained via kinetic studies on the pyrolysis of mixed plastics, which provided theoretical guidance for industrialization of plastic pyrolysis.

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Pyrolysis kinetics and thermodynamic parameters of plastic grocery bag based on thermogravimetric data using iso-conversional methods

Cited by 31 publications

References 61 publications

Pyrolysis Kinetics of Byrsonima crassifolia Stone as Agro-Industrial Waste through Isoconversional Models

Pyrolysis Kinetics of Byrsonima crassifolia Stone as Agro-Industrial Waste through Isoconversional Models

Investigation of kinetic triplets and thermodynamic parameters of different species of bamboo‐biomass from North‐East India

Study on pyrolysis behavior and kinetics of waste plastics with spent FCC catalyst

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