Thermogravimetric study of Chlorella vulgaris for syngas production
The present study investigates the thermal degradation behavior of Chlorella vulgaris using a thermogravimetric analyzer (TGA) to explore application as feedstock for syngas production. The biomass was heated continuously from room temperature to 1000°C at different heating rates (5, 10 and 20°Cmin-...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/19561 |
| _version_ | 1848750067802963968 |
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| author | Raheem, A. Sivasangar, S. Wan Azlina, W. Taufiq Yap, Y. Danquah, Michael Harun, R. |
| author_facet | Raheem, A. Sivasangar, S. Wan Azlina, W. Taufiq Yap, Y. Danquah, Michael Harun, R. |
| author_sort | Raheem, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The present study investigates the thermal degradation behavior of Chlorella vulgaris using a thermogravimetric analyzer (TGA) to explore application as feedstock for syngas production. The biomass was heated continuously from room temperature to 1000°C at different heating rates (5, 10 and 20°Cmin-1) under N2/air conditions at a constant flow rate of 25mLmin-1. Experimental results showed that the combustion process of C. vulgaris can be divided into three major phases; (1) moisture removal, (2) devolatilization of carbohydrates, protein and lipids and (3) degradation of carbonaceous material. A degradation rate of 80% was obtained at the second phase of the combustion process in the presence of air whilst a degradation rate of 60% was obtained under N2 atmosphere at the same phase. The biomass was further gasified for syngas production using a Temperature Programmed Gasifier (TPG). The effect of three different process variables, temperature, microalgal loading, and heating rate was investigated. The maximum H2 production was found at 800°C temperature with a biomass loading of 0.5g. No significant effect of heating rate was observed on H2 production. The activation energy values, based on the Kissinger method, were evaluated to be 45.38±0.5kJmol-1 (1st stage), 61.20±0.5 kJ mol-1 (2nd stage) and 97.22±0.5 kJ mol-1 (3rd stage). The results demonstrate a significant potential for the utilization of the microalgae biomass as feedstock for large-scale production of syngas via gasification. |
| first_indexed | 2025-11-14T07:30:57Z |
| format | Journal Article |
| id | curtin-20.500.11937-19561 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:30:57Z |
| publishDate | 2015 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-195612017-09-13T13:43:51Z Thermogravimetric study of Chlorella vulgaris for syngas production Raheem, A. Sivasangar, S. Wan Azlina, W. Taufiq Yap, Y. Danquah, Michael Harun, R. The present study investigates the thermal degradation behavior of Chlorella vulgaris using a thermogravimetric analyzer (TGA) to explore application as feedstock for syngas production. The biomass was heated continuously from room temperature to 1000°C at different heating rates (5, 10 and 20°Cmin-1) under N2/air conditions at a constant flow rate of 25mLmin-1. Experimental results showed that the combustion process of C. vulgaris can be divided into three major phases; (1) moisture removal, (2) devolatilization of carbohydrates, protein and lipids and (3) degradation of carbonaceous material. A degradation rate of 80% was obtained at the second phase of the combustion process in the presence of air whilst a degradation rate of 60% was obtained under N2 atmosphere at the same phase. The biomass was further gasified for syngas production using a Temperature Programmed Gasifier (TPG). The effect of three different process variables, temperature, microalgal loading, and heating rate was investigated. The maximum H2 production was found at 800°C temperature with a biomass loading of 0.5g. No significant effect of heating rate was observed on H2 production. The activation energy values, based on the Kissinger method, were evaluated to be 45.38±0.5kJmol-1 (1st stage), 61.20±0.5 kJ mol-1 (2nd stage) and 97.22±0.5 kJ mol-1 (3rd stage). The results demonstrate a significant potential for the utilization of the microalgae biomass as feedstock for large-scale production of syngas via gasification. 2015 Journal Article http://hdl.handle.net/20.500.11937/19561 10.1016/j.algal.2015.08.003 restricted |
| spellingShingle | Raheem, A. Sivasangar, S. Wan Azlina, W. Taufiq Yap, Y. Danquah, Michael Harun, R. Thermogravimetric study of Chlorella vulgaris for syngas production |
| title | Thermogravimetric study of Chlorella vulgaris for syngas production |
| title_full | Thermogravimetric study of Chlorella vulgaris for syngas production |
| title_fullStr | Thermogravimetric study of Chlorella vulgaris for syngas production |
| title_full_unstemmed | Thermogravimetric study of Chlorella vulgaris for syngas production |
| title_short | Thermogravimetric study of Chlorella vulgaris for syngas production |
| title_sort | thermogravimetric study of chlorella vulgaris for syngas production |
| url | http://hdl.handle.net/20.500.11937/19561 |