Biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge
The use of microwave pyrolysis as an alternative for sewage sludge reutilization was investigated. This paper evaluates the basic chemical characteristic of the bio-fuel obtained in low-temperature microwave pyrolysis in comparison to that of the conventional pyrolysis. In this study, sewage sludge...
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| Format: | Proceeding |
| Language: | English |
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Institute of Science Universiti Teknologi MARA
2006
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| Online Access: | http://ir.unimas.my/id/eprint/10272/ http://ir.unimas.my/id/eprint/10272/1/2006_ISESEE.pdf |
| _version_ | 1848836747876630528 |
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| author | Wahi, Rafeah Idris, Azni Mohd Salleh, Mohamad Amran Khalid, Kaida |
| author_facet | Wahi, Rafeah Idris, Azni Mohd Salleh, Mohamad Amran Khalid, Kaida |
| author_sort | Wahi, Rafeah |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | The use of microwave pyrolysis as an alternative for sewage sludge reutilization was investigated. This paper evaluates the basic chemical characteristic of the bio-fuel obtained in low-temperature microwave pyrolysis in comparison to that of the conventional pyrolysis. In this study, sewage sludge was dried and pyrolyzed in a single process at laboratory scale. Sewage sludge was placed in a quartz reactor, which in turn was placed in a microwave cavity oven. Graphite was used as microwave absorber. The pyrolysis temperature was moderate (at 650 °C) with five minutes heating. Conventional pyrolysis of sewage sludge
by using fluidized bed reactor at similar temperature but lower heating rate was conducted for comparative purpose. It is found that microwave pyrolysis of sewage sludge at 650 °C gives rise to formation of 27.7% carbonaceous residue (char), 5.6% pyrolytic oil and 66.7% non-condensable gases (dry basis). On the other hand, 47.3% of char, 14.2% of oil and 39% of non-condensable gases were produced in conventional pyrolysis. Microwave and conventional pyrolysis of sewage sludge at moderate temperature yield pyrolytic oils with calorific values of 28852 and 37194 kJ/kg respectively, which is higher than that of lignite and subbituminous coal (23200 kJ/kg) thereby reflecting the potential of this fraction as fuel material. |
| first_indexed | 2025-11-15T06:28:41Z |
| format | Proceeding |
| id | unimas-10272 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:28:41Z |
| publishDate | 2006 |
| publisher | Institute of Science Universiti Teknologi MARA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-102722016-01-25T02:08:17Z http://ir.unimas.my/id/eprint/10272/ Biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge Wahi, Rafeah Idris, Azni Mohd Salleh, Mohamad Amran Khalid, Kaida QD Chemistry TD Environmental technology. Sanitary engineering TP Chemical technology The use of microwave pyrolysis as an alternative for sewage sludge reutilization was investigated. This paper evaluates the basic chemical characteristic of the bio-fuel obtained in low-temperature microwave pyrolysis in comparison to that of the conventional pyrolysis. In this study, sewage sludge was dried and pyrolyzed in a single process at laboratory scale. Sewage sludge was placed in a quartz reactor, which in turn was placed in a microwave cavity oven. Graphite was used as microwave absorber. The pyrolysis temperature was moderate (at 650 °C) with five minutes heating. Conventional pyrolysis of sewage sludge by using fluidized bed reactor at similar temperature but lower heating rate was conducted for comparative purpose. It is found that microwave pyrolysis of sewage sludge at 650 °C gives rise to formation of 27.7% carbonaceous residue (char), 5.6% pyrolytic oil and 66.7% non-condensable gases (dry basis). On the other hand, 47.3% of char, 14.2% of oil and 39% of non-condensable gases were produced in conventional pyrolysis. Microwave and conventional pyrolysis of sewage sludge at moderate temperature yield pyrolytic oils with calorific values of 28852 and 37194 kJ/kg respectively, which is higher than that of lignite and subbituminous coal (23200 kJ/kg) thereby reflecting the potential of this fraction as fuel material. Institute of Science Universiti Teknologi MARA 2006-12-03 Proceeding NonPeerReviewed text en http://ir.unimas.my/id/eprint/10272/1/2006_ISESEE.pdf Wahi, Rafeah and Idris, Azni and Mohd Salleh, Mohamad Amran and Khalid, Kaida (2006) Biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge. In: Proceeding of the International Symposium & Exhibition on Sustainable energy and environment ( ISESEE), 2006, Universiti Teknologi Mara, Sarawak. |
| spellingShingle | QD Chemistry TD Environmental technology. Sanitary engineering TP Chemical technology Wahi, Rafeah Idris, Azni Mohd Salleh, Mohamad Amran Khalid, Kaida Biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge |
| title | Biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge |
| title_full | Biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge |
| title_fullStr | Biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge |
| title_full_unstemmed | Biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge |
| title_short | Biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge |
| title_sort | biofuels from low-temperature microwave and conventional pyrolysis of sewage sludge |
| topic | QD Chemistry TD Environmental technology. Sanitary engineering TP Chemical technology |
| url | http://ir.unimas.my/id/eprint/10272/ http://ir.unimas.my/id/eprint/10272/1/2006_ISESEE.pdf |