A Comprehensive Study on the Combustion of Sunflower Husk Pellets by Thermogravimetric and Kinetic Analysis, Kriging Method
The combustion of sunflower husk pellets was investigated by kinetic analysis supplemented by the Kriging method. The nonisothermal thermogravimetric experiments in air were carried out at the temperatures from 20 to 700 °C and heating rates of 5, 10, and 20 °C/min. Kinetic analysis was carried out...
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MDPI AG
2023-04-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/13/4/840 |
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| author | Svetlana Islamova Anastasia Tartygasheva Julia Karaeva Vladimir Panchenko Yuriy Litti |
| author_facet | Svetlana Islamova Anastasia Tartygasheva Julia Karaeva Vladimir Panchenko Yuriy Litti |
| author_sort | Svetlana Islamova |
| collection | DOAJ |
| description | The combustion of sunflower husk pellets was investigated by kinetic analysis supplemented by the Kriging method. The nonisothermal thermogravimetric experiments in air were carried out at the temperatures from 20 to 700 °C and heating rates of 5, 10, and 20 °C/min. Kinetic analysis was carried out using the model-free OFW (Ozawa–Flynn–Wall) method and Coats–Redfern (CR) method. The activation energy values, calculated by the OFW method, ranged from 116.44 to 249.94 kJ/mol. These data were used to determine the combustion mechanism by the CR method. The kinetic triplet (<i>E<sub>α</sub></i>, <i>A</i>, <i>g</i>(<i>α</i>)) was determined in the conversion interval 0.2 to 0.8. The model of the chemical reaction F<sub>8</sub> was recommended to describe the mechanism of the thermochemical conversion process. The relationship between the kinetic parameters was analyzed using the Kriging method. The patterns between the kinetic parameters were represented as three-dimensional surfaces and two-dimensional projections. The distribution’s surfaces were uniform; there were local extremes as well as linear regions. A new approach to the data analysis will allow predicting parameters of a thermochemical conversion of the various raw materials and contributes to a deeper understanding of the characteristics and mechanism of biomass combustion. |
| first_indexed | 2024-03-11T05:21:24Z |
| format | Article |
| id | doaj.art-f3a182b7408043c5bfff785439570c24 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-11T05:21:24Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj.art-f3a182b7408043c5bfff785439570c242023-11-17T17:54:13ZengMDPI AGAgriculture2077-04722023-04-0113484010.3390/agriculture13040840A Comprehensive Study on the Combustion of Sunflower Husk Pellets by Thermogravimetric and Kinetic Analysis, Kriging MethodSvetlana Islamova0Anastasia Tartygasheva1Julia Karaeva2Vladimir Panchenko3Yuriy Litti4Institute of Power Engineering and Advanced Technologies, FRC Kazan Scientific Center, Russian Academy of Sciences, 420111 Kazan, RussiaInstitute of Power Engineering and Advanced Technologies, FRC Kazan Scientific Center, Russian Academy of Sciences, 420111 Kazan, RussiaInstitute of Power Engineering and Advanced Technologies, FRC Kazan Scientific Center, Russian Academy of Sciences, 420111 Kazan, RussiaDepartment of Theoretical and Applied Mechanics, Russian University of Transport, 127994 Moscow, RussiaWinogradsky Institute of Microbiology, “Fundamentals of Biotechnology” Federal Research Center, Russian Academy of Sciences, 117312 Moscow, RussiaThe combustion of sunflower husk pellets was investigated by kinetic analysis supplemented by the Kriging method. The nonisothermal thermogravimetric experiments in air were carried out at the temperatures from 20 to 700 °C and heating rates of 5, 10, and 20 °C/min. Kinetic analysis was carried out using the model-free OFW (Ozawa–Flynn–Wall) method and Coats–Redfern (CR) method. The activation energy values, calculated by the OFW method, ranged from 116.44 to 249.94 kJ/mol. These data were used to determine the combustion mechanism by the CR method. The kinetic triplet (<i>E<sub>α</sub></i>, <i>A</i>, <i>g</i>(<i>α</i>)) was determined in the conversion interval 0.2 to 0.8. The model of the chemical reaction F<sub>8</sub> was recommended to describe the mechanism of the thermochemical conversion process. The relationship between the kinetic parameters was analyzed using the Kriging method. The patterns between the kinetic parameters were represented as three-dimensional surfaces and two-dimensional projections. The distribution’s surfaces were uniform; there were local extremes as well as linear regions. A new approach to the data analysis will allow predicting parameters of a thermochemical conversion of the various raw materials and contributes to a deeper understanding of the characteristics and mechanism of biomass combustion.https://www.mdpi.com/2077-0472/13/4/840thermogravimetric analysiskinetic analysisKriging methodcombustionsunflower husk pellets |
| spellingShingle | Svetlana Islamova Anastasia Tartygasheva Julia Karaeva Vladimir Panchenko Yuriy Litti A Comprehensive Study on the Combustion of Sunflower Husk Pellets by Thermogravimetric and Kinetic Analysis, Kriging Method Agriculture thermogravimetric analysis kinetic analysis Kriging method combustion sunflower husk pellets |
| title | A Comprehensive Study on the Combustion of Sunflower Husk Pellets by Thermogravimetric and Kinetic Analysis, Kriging Method |
| title_full | A Comprehensive Study on the Combustion of Sunflower Husk Pellets by Thermogravimetric and Kinetic Analysis, Kriging Method |
| title_fullStr | A Comprehensive Study on the Combustion of Sunflower Husk Pellets by Thermogravimetric and Kinetic Analysis, Kriging Method |
| title_full_unstemmed | A Comprehensive Study on the Combustion of Sunflower Husk Pellets by Thermogravimetric and Kinetic Analysis, Kriging Method |
| title_short | A Comprehensive Study on the Combustion of Sunflower Husk Pellets by Thermogravimetric and Kinetic Analysis, Kriging Method |
| title_sort | comprehensive study on the combustion of sunflower husk pellets by thermogravimetric and kinetic analysis kriging method |
| topic | thermogravimetric analysis kinetic analysis Kriging method combustion sunflower husk pellets |
| url | https://www.mdpi.com/2077-0472/13/4/840 |
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