Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst
The thermogravimetric behaviors and the kinetic parameters of uncatalyzed and catalyzed pyrolysis processes of a mixture of powdered raw rice husk (RRH) and its ash (RHA) in the form of pellets were determined by thermogravimetric analysis at three different heating rates, i.e., 5, 10, and 20 K/min,...
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| Format: | Article |
| Language: | English |
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Universitas Negeri Diponegoro
2022
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| Online Access: | https://repository.ugm.ac.id/282137/1/Wibowo%20et%20al%20-%202022%20-%20Thermogravimetric%20Analysis%20and%20Kinetic%20Studyon%20Catalytic.pdf |
| _version_ | 1797037541317148672 |
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| author | Wibowo, Wusana Agung Cahyono, Rochim Bakti Rochmadi, Rochmadi Budiman, Arief |
| author_facet | Wibowo, Wusana Agung Cahyono, Rochim Bakti Rochmadi, Rochmadi Budiman, Arief |
| author_sort | Wibowo, Wusana Agung |
| collection | UGM |
| description | The thermogravimetric behaviors and the kinetic parameters of uncatalyzed and catalyzed pyrolysis processes of a mixture of powdered raw rice husk (RRH) and its ash (RHA) in the form of pellets were determined by thermogravimetric analysis at three different heating rates, i.e., 5, 10, and 20 K/min, from 303 to 873 K. This research aimed to prove that the rice husk ash has a catalytic effect on rice husk pyrolysis. To investigate the catalytic effect of RHA, rice husk pellets (RHP) with the weight ratio of RRH:ARH of 10:2 were used as the sample. Model-free methods, namely Friedman (FR), Kissinger-Akahira-Sunose (KAS), and Flynn-Wall-Ozawa (FWO), were used to calculate the apparent energy of activation (EA). The thermogravimetric analysis showed that the decomposition of RHP in a nitrogen atmosphere could be divided into three stages: drying stage (303-443 K), the rapid decomposition stage (443-703 K), and the slow decomposition stage (703-873 K). The weight loss percentages of each stage for both uncatalyzed and catalyzed pyrolysis of RHP were 2.4-5.7, 35.5-59.4, and 2.9-12.2, respectively. Using the FR, FWO, and KAS methods, the values of EA for the degrees of conversion (α) of 0.1 to 0.65 were in the range of 168-256 kJ/mol for the uncatalyzed pyrolysis and 97-204 kJ/mol for the catalyzed one. We found that the catalyzed pyrolysis led the EA to have values lower than those got by the uncatalyzed one. This phenomenon might prove that RHA has a catalytic effect on RHP pyrolysis by lowering the energy of activation. © 2022. The Authors. |
| first_indexed | 2024-03-14T00:04:51Z |
| format | Article |
| id | oai:generic.eprints.org:282137 |
| institution | Universiti Gadjah Mada |
| language | English |
| last_indexed | 2024-03-14T00:04:51Z |
| publishDate | 2022 |
| publisher | Universitas Negeri Diponegoro |
| record_format | dspace |
| spelling | oai:generic.eprints.org:2821372023-11-29T08:43:50Z https://repository.ugm.ac.id/282137/ Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst Wibowo, Wusana Agung Cahyono, Rochim Bakti Rochmadi, Rochmadi Budiman, Arief Chemical Engineering not elsewhere classified The thermogravimetric behaviors and the kinetic parameters of uncatalyzed and catalyzed pyrolysis processes of a mixture of powdered raw rice husk (RRH) and its ash (RHA) in the form of pellets were determined by thermogravimetric analysis at three different heating rates, i.e., 5, 10, and 20 K/min, from 303 to 873 K. This research aimed to prove that the rice husk ash has a catalytic effect on rice husk pyrolysis. To investigate the catalytic effect of RHA, rice husk pellets (RHP) with the weight ratio of RRH:ARH of 10:2 were used as the sample. Model-free methods, namely Friedman (FR), Kissinger-Akahira-Sunose (KAS), and Flynn-Wall-Ozawa (FWO), were used to calculate the apparent energy of activation (EA). The thermogravimetric analysis showed that the decomposition of RHP in a nitrogen atmosphere could be divided into three stages: drying stage (303-443 K), the rapid decomposition stage (443-703 K), and the slow decomposition stage (703-873 K). The weight loss percentages of each stage for both uncatalyzed and catalyzed pyrolysis of RHP were 2.4-5.7, 35.5-59.4, and 2.9-12.2, respectively. Using the FR, FWO, and KAS methods, the values of EA for the degrees of conversion (α) of 0.1 to 0.65 were in the range of 168-256 kJ/mol for the uncatalyzed pyrolysis and 97-204 kJ/mol for the catalyzed one. We found that the catalyzed pyrolysis led the EA to have values lower than those got by the uncatalyzed one. This phenomenon might prove that RHA has a catalytic effect on RHP pyrolysis by lowering the energy of activation. © 2022. The Authors. Universitas Negeri Diponegoro 2022 Article PeerReviewed application/pdf en https://repository.ugm.ac.id/282137/1/Wibowo%20et%20al%20-%202022%20-%20Thermogravimetric%20Analysis%20and%20Kinetic%20Studyon%20Catalytic.pdf Wibowo, Wusana Agung and Cahyono, Rochim Bakti and Rochmadi, Rochmadi and Budiman, Arief (2022) Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst. International Journal of Renewable Energy Development, 11 (1). 207 -219. ISSN 22524940 https://ejournal.undip.ac.id/index.php/ijred/article/view/41887/pdf |
| spellingShingle | Chemical Engineering not elsewhere classified Wibowo, Wusana Agung Cahyono, Rochim Bakti Rochmadi, Rochmadi Budiman, Arief Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst |
| title | Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst |
| title_full | Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst |
| title_fullStr | Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst |
| title_full_unstemmed | Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst |
| title_short | Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst |
| title_sort | thermogravimetric analysis and kinetic study on catalytic pyrolysis of rice husk pellet using its ash as a low cost in situ catalyst |
| topic | Chemical Engineering not elsewhere classified |
| url | https://repository.ugm.ac.id/282137/1/Wibowo%20et%20al%20-%202022%20-%20Thermogravimetric%20Analysis%20and%20Kinetic%20Studyon%20Catalytic.pdf |
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