Kinetic study of the pyrolysis of microalgae under nitrogen and CO2 atmosphere
In this study, three primary components of algae (lipid, carbohydrate and protein) and one microalgae (spirulina) were pyrolyzed using a thermogravimetric analyser (TGA) under nitrogen and CO2 atmosphere at four heating rates. It was found that protein decomposed first, followed by carbohydrate and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020
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| Online Access: | https://eprints.nottingham.ac.uk/58973/ |
| _version_ | 1848799572852211712 |
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| author | Hong, Yu Xie, Chengrui Chen, Wanru Luo, Xiang Shi, Kaiqi Wu, Tao |
| author_facet | Hong, Yu Xie, Chengrui Chen, Wanru Luo, Xiang Shi, Kaiqi Wu, Tao |
| author_sort | Hong, Yu |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In this study, three primary components of algae (lipid, carbohydrate and protein) and one microalgae (spirulina) were pyrolyzed using a thermogravimetric analyser (TGA) under nitrogen and CO2 atmosphere at four heating rates. It was found that protein decomposed first, followed by carbohydrate and then lipid. The kinetic study revealed that the lowest activation energy for the initiation of the pyrolysis of ovalbumin (protein) is ∼70 kJ/mol. Oil droplet showed higher activation energy of 266.5 kJ/mol during its pyrolysis in the CO2 atmosphere, which suggests that algal lipid is more difficult to decompose in the CO2 atmosphere. However, for the pyrolysis of cellulose (carbohydrate), the activation energy (∼310 kJ/mol) is similar under two different gas atmospheres tested. This study showed that CO2 atmosphere favors the pyrolysis of algae with high protein content and low lipid content, since the existence of CO2 promotes the cracking of VOCs (volatile organic compounds) as well as the reaction between VOCs and CO2. |
| first_indexed | 2025-11-14T20:37:48Z |
| format | Article |
| id | nottingham-58973 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:37:48Z |
| publishDate | 2020 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-589732021-07-30T04:30:13Z https://eprints.nottingham.ac.uk/58973/ Kinetic study of the pyrolysis of microalgae under nitrogen and CO2 atmosphere Hong, Yu Xie, Chengrui Chen, Wanru Luo, Xiang Shi, Kaiqi Wu, Tao In this study, three primary components of algae (lipid, carbohydrate and protein) and one microalgae (spirulina) were pyrolyzed using a thermogravimetric analyser (TGA) under nitrogen and CO2 atmosphere at four heating rates. It was found that protein decomposed first, followed by carbohydrate and then lipid. The kinetic study revealed that the lowest activation energy for the initiation of the pyrolysis of ovalbumin (protein) is ∼70 kJ/mol. Oil droplet showed higher activation energy of 266.5 kJ/mol during its pyrolysis in the CO2 atmosphere, which suggests that algal lipid is more difficult to decompose in the CO2 atmosphere. However, for the pyrolysis of cellulose (carbohydrate), the activation energy (∼310 kJ/mol) is similar under two different gas atmospheres tested. This study showed that CO2 atmosphere favors the pyrolysis of algae with high protein content and low lipid content, since the existence of CO2 promotes the cracking of VOCs (volatile organic compounds) as well as the reaction between VOCs and CO2. Elsevier 2020-01-01 Article PeerReviewed application/pdf en cc_by_nc_nd https://eprints.nottingham.ac.uk/58973/1/combinepdf.pdf Hong, Yu, Xie, Chengrui, Chen, Wanru, Luo, Xiang, Shi, Kaiqi and Wu, Tao (2020) Kinetic study of the pyrolysis of microalgae under nitrogen and CO2 atmosphere. Renewable Energy, 145 . pp. 2159-2168. ISSN 0960-1481 Kinetics; Pyrolysis; Algae; Model compounds; Carbon dioxide https://www.sciencedirect.com/science/article/pii/S0960148119311553?via%3Dihub doi:10.1016/j.renene.2019.07.135 doi:10.1016/j.renene.2019.07.135 |
| spellingShingle | Kinetics; Pyrolysis; Algae; Model compounds; Carbon dioxide Hong, Yu Xie, Chengrui Chen, Wanru Luo, Xiang Shi, Kaiqi Wu, Tao Kinetic study of the pyrolysis of microalgae under nitrogen and CO2 atmosphere |
| title | Kinetic study of the pyrolysis of microalgae under nitrogen and CO2 atmosphere |
| title_full | Kinetic study of the pyrolysis of microalgae under nitrogen and CO2 atmosphere |
| title_fullStr | Kinetic study of the pyrolysis of microalgae under nitrogen and CO2 atmosphere |
| title_full_unstemmed | Kinetic study of the pyrolysis of microalgae under nitrogen and CO2 atmosphere |
| title_short | Kinetic study of the pyrolysis of microalgae under nitrogen and CO2 atmosphere |
| title_sort | kinetic study of the pyrolysis of microalgae under nitrogen and co2 atmosphere |
| topic | Kinetics; Pyrolysis; Algae; Model compounds; Carbon dioxide |
| url | https://eprints.nottingham.ac.uk/58973/ https://eprints.nottingham.ac.uk/58973/ https://eprints.nottingham.ac.uk/58973/ |