Thermogravimetric study on the pyrolysis kinetic mechanism of waste biomass from fruit processing industry
| Autor: | Nebojša Manić, Martina Balac, Miloš Radojević, Dragoslava Stojiljković, Bojan Janković |
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| Rok vydání: | 2020 |
| Předmět: |
secondary lignin decomposition
Thermogravimetric analysis pyrolysis kinetics Renewable Energy Sustainability and the Environment Reaction step Chemistry lcsh:Mechanical engineering and machinery 020209 energy Thermal decomposition Biomass Thermodynamics master-plots method 02 engineering and technology Activation energy Thermogravimetry agricultural waste biomass 020401 chemical engineering Scientific method dehydroxylation 0202 electrical engineering electronic engineering information engineering lcsh:TJ1-1570 0204 chemical engineering Pyrolysis |
| Zdroj: | Thermal Science, Vol 24, Iss 6 Part B, Pp 4221-4239 (2020) |
| ISSN: | 2334-7163 0354-9836 |
| Popis: | The detailed kinetic analysis of slow pyrolysis process of apricot (Prunus armeniaca L.) kernal shells has been estimated, under non-isothermal conditions, through thermogravimetric analysis and derivative thermogravimetry. Thermal decomposition was implemented using four different heating rates (5, 10, 15, and 20?C per minute), with consideration of how this parameter effects on the process kinetics. The higher heating rates provoke the shift of thermoanalytical curves towards more elevated temperatures. Using isoconversional differential method, the variation of activation energy, Ea, with conversion fraction, ?, was detected, and pyrolysis reaction profile was discussed. After resolving the pyrolysis rate curves of individual biomass constituents, the temperature and conversion ranges of their thermal transformations were clearly identified. In the latter stage of analysis, every identified reaction step was considered through mechanistic description, which involves selection of the appropriate kinetic model function. The comparison of the results as well as discrepancies between them has been discussed. The corresponding rate-law equations related to thermal decomposition reactions of all biomass constituents present in the tested agricultural waste material have been identified. |
| Databáze: | OpenAIRE |
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