Pyrolysis kinetic parameters investigation of single and tri-component biomass: Models fitting via comparative model-free methods

Phuakpunk, Kiattikhoon; Chalermsinsuwan, Benjapon; Assabumrungrat, Suttichai

doi:10.1016/j.renene.2021.10.011

Cited by 17 publications

(6 citation statements)

References 38 publications

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“…The conversion ranges from 0.1 to 0.6 can be considered as the initial conversion range which mostly involve hemicellulose. The highest activation energy is required at conversion of 0.4 since that region records the slowest rate of Napier grass decomposition 46 . The Ea is the minimum amount of energy needed to alter the bonds of each atom in the reaction.…”

Section: Resultsmentioning

confidence: 99%

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Assessment of self‐heating and spontaneous combustion of Napier grass using thermogravimetric analysis

Kunalan,

Wan Ab Karim Ghani,

Mohd Tohir

et al. 2023

Env Prog and Sustain Energy

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Napier grass is a potential solid biofuel that can be used as a renewable energy resource. Nevertheless, its tendency for self‐heating and the subsequent self‐ignition remain unknown, which are common problems in solid fuel. In this work, thermal decomposition characteristics of Napier grass in air and inert conditions were investigated using thermogravimetric analysis (TGA) and the pertinent kinetic parameters were established using model‐free methods. The average activation energy of Napier grass thermal decomposition is 285 and 382 kJ/mol under oxidative and inert conditions, respectively. The linear plot obtained through model‐free methods shows a high linear correlation coefficient at conversion ranges of 0.2–0.7 during combustion and 0.4–0.6 during pyrolysis. The ignition and burnout temperatures were evaluated, and ignition index of Napier grass was established. Average ignition temperature obtained for air was 217°C while 200°C for inert condition. The burnout temperatures between 691 and 984°C were observed. This research facilitates in understanding fire threat posed by tendency of Napier grass to self‐heat and provides valuable information for safe conditions of Napier grass storage and transportation.

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Section: Resultsmentioning

confidence: 99%

“…The highest activation energy is required at conversion of 0.4 since that region records the slowest rate of Napier grass decomposition. 46 The Ea is the minimum amount of energy needed to alter the bonds of each atom in the reaction. Thus, as the activation energy increases, the reaction speed decreases.…”

Section: Activation Energymentioning

confidence: 99%

Assessment of self‐heating and spontaneous combustion of Napier grass using thermogravimetric analysis

Kunalan,

Wan Ab Karim Ghani,

Mohd Tohir

et al. 2023

Env Prog and Sustain Energy

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“…The course of the decomposition also depends on the reaction atmosphere, pressure, and composition of the input material. As a rule, increasing the pressure and low heating rates result in an increase in the efficiency of the char (in this case, biochar) [22,23]. lignin (own elaboration from [22,23]).…”

Section: Pyrolysis Processing and Technology Of Biomassmentioning

confidence: 99%

“…As a rule, increasing the pressure and low heating rates result in an increase in the efficiency of the char (in this case, biochar) [22,23]. lignin (own elaboration from [22,23]).…”

Section: Pyrolysis Processing and Technology Of Biomassmentioning

confidence: 99%

Pyrolysis of Waste Biomass – Technical and Process Achievements, and Future Development – A Review

Igliński¹,

Kujawski²,

Kiełkowska³

2023

Preprint

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Pyrolysis has been applied in the human economy for many years, and it has become a significant alternative to the production of chemical compounds, including biofuels. The article focuses mostly on recent achievements in the technical and processing aspects of pyrolysis. This review provides an overview of the recent advanced pyrolysis technology used in gas, bio-oil, and biochar production. The key parameters to maximize the production of specific chemical compounds were discussed and considered during the construction of the reactors. The emphasis is put on optimizing the process parameters, technical requirements, and renewable energy use in the process and conception to improve the efficiency of product production. The application of pyrolysis gas, oil, and biochar as valuable chemical compounds are related to the intensifying effects of climate change, biofuel production, and waste management in accordance with the principles of sustainable development.

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“…As a result of cellulose and hemicellulose decomposition, volatile compounds are produced, whereas decomposition of lignin, which is a natural polymer, produces a solid residue [21]. Decomposition of the components takes place at different temperatures, i.e., hemicellulose decomposes at 200-260 • C, cellulose at 240-350 • C and lignin at 280-500 • C [22,23]. The proportions of the products depend on the pyrolysis method itself, the properties and characteristics of the biomass and the reaction parameters.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis as a Method for Processing of Waste from Production of Cultivated Tobacco (Nicotiana tabacum L.)

Saletnik,

Fiedur,

Kwarciany

et al. 2024

Sustainability

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Because of the current energy crisis, researchers are looking into new potential substrates for production of biofuels and for possible ways to enhance their parameters. In line with such efforts, the current study focuses on the feasibility of processing waste from the production of cultivated tobacco. The aim of this study was to assess the potential of tobacco waste as a raw material for the production of solid biofuels, such as biochar produced through pyrolysis, and to determine its basic physicochemical properties, compared to other materials used for the production of green fuels. The analyses showed calorific values of 16.16 MJ kg−1 for the raw biomass and those in the range of 24.16–27.32 MJ kg−1 for the products of pyrolysis conducted at temperatures of 400–500 °C and with a heating time in the range of 5 to 15 min. To address the safety-related issues, the study also measured the explosion index (Kst max), which, in the raw biomass, amounted to 72.62 bar s−1 and in the biochar was in the range between 82.42 and 88.11 bar s−1. The registered maximum explosion pressure was 7.37 bar in the case of raw biomass, whereas in the biochars, the value ranged from 8.09 to 8.94 bar. The findings show that tobacco waste has parameters comparable to those identified in the case of other solid biofuels, whereas the process of pyrolysis enhances the energy-related parameters without increasing the explosion class of the product.

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Pyrolysis kinetic parameters investigation of single and tri-component biomass: Models fitting via comparative model-free methods

Cited by 17 publications

References 38 publications

Assessment of self‐heating and spontaneous combustion of Napier grass using thermogravimetric analysis

Assessment of self‐heating and spontaneous combustion of Napier grass using thermogravimetric analysis

Pyrolysis of Waste Biomass – Technical and Process Achievements, and Future Development – A Review

Pyrolysis as a Method for Processing of Waste from Production of Cultivated Tobacco (Nicotiana tabacum L.)

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