Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction
The complex distribution of electric field and heat transfer in microwave heating causes unfavorable hotspots in a microwave-assisted transesterification process. This local overheating may reduce product yield significantly, thereby highlighting the importance of mixing during microwave-assisted bi...
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Elsevier B.V.
2025
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| Online Access: | http://psasir.upm.edu.my/id/eprint/120921/1/120921.pdf http://psasir.upm.edu.my/id/eprint/120921/ https://linkinghub.elsevier.com/retrieve/pii/S2590123025006553 |
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| author | Mohamad Aziz, Nur Atiqah Mohamed, Hassan Ong, Mei Yin Yunus, Robiah Law, Ming Chiat Abd Hamid, Hamidah Kania, Dina Mahlia, Teuku Meurah Indra |
| author_facet | Mohamad Aziz, Nur Atiqah Mohamed, Hassan Ong, Mei Yin Yunus, Robiah Law, Ming Chiat Abd Hamid, Hamidah Kania, Dina Mahlia, Teuku Meurah Indra |
| author_sort | Mohamad Aziz, Nur Atiqah |
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| content_provider | Universiti Putra Malaysia |
| content_source | UPM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | The complex distribution of electric field and heat transfer in microwave heating causes unfavorable hotspots in a microwave-assisted transesterification process. This local overheating may reduce product yield significantly, thereby highlighting the importance of mixing during microwave-assisted biolubricant production. This study investigated the distribution of electric field in the microwave-assisted transesterification of palm oil methyl ester (PME) and trimethylolpropane (TMP) for biolubricant trimethylolpropane ester (TMPE) production, as well as the temperature profile and the power absorbed, using COMSOL Multiphysics 4.2. The electric field and power absorbed by the sample were 1.92×104 V/m and 1.38×107 W/m3, respectively, which are highly affected by the polarity of TMPE. Hotspots were observed and were primarily located in the upper corner of the TMPE sample, and a significant redistribution of the electromagnetic field within the oven cavity was measured. This study also concluded that the dielectric properties of the TMPE sample layer and frequency are highly influential factors for microwave absorption and heat conversion. This study can provide insight into the future design of microwave-assisted transesterification to enhance product yield and scale up microwave reactors. |
| format | Article |
| id | my.upm.eprints-120921 |
| institution | Universiti Putra Malaysia |
| language | en |
| publishDate | 2025 |
| publisher | Elsevier B.V. |
| record_format | eprints |
| spelling | my.upm.eprints-1209212025-10-15T07:43:55Z http://psasir.upm.edu.my/id/eprint/120921/ Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction Mohamad Aziz, Nur Atiqah Mohamed, Hassan Ong, Mei Yin Yunus, Robiah Law, Ming Chiat Abd Hamid, Hamidah Kania, Dina Mahlia, Teuku Meurah Indra The complex distribution of electric field and heat transfer in microwave heating causes unfavorable hotspots in a microwave-assisted transesterification process. This local overheating may reduce product yield significantly, thereby highlighting the importance of mixing during microwave-assisted biolubricant production. This study investigated the distribution of electric field in the microwave-assisted transesterification of palm oil methyl ester (PME) and trimethylolpropane (TMP) for biolubricant trimethylolpropane ester (TMPE) production, as well as the temperature profile and the power absorbed, using COMSOL Multiphysics 4.2. The electric field and power absorbed by the sample were 1.92×104 V/m and 1.38×107 W/m3, respectively, which are highly affected by the polarity of TMPE. Hotspots were observed and were primarily located in the upper corner of the TMPE sample, and a significant redistribution of the electromagnetic field within the oven cavity was measured. This study also concluded that the dielectric properties of the TMPE sample layer and frequency are highly influential factors for microwave absorption and heat conversion. This study can provide insight into the future design of microwave-assisted transesterification to enhance product yield and scale up microwave reactors. Elsevier B.V. 2025 Article PeerReviewed text en cc_by_nc_nd_4 http://psasir.upm.edu.my/id/eprint/120921/1/120921.pdf Mohamad Aziz, Nur Atiqah and Mohamed, Hassan and Ong, Mei Yin and Yunus, Robiah and Law, Ming Chiat and Abd Hamid, Hamidah and Kania, Dina and Mahlia, Teuku Meurah Indra (2025) Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction. Results in Engineering, 25. art. no. 104577. pp. 1-10. ISSN 2590-1230 https://linkinghub.elsevier.com/retrieve/pii/S2590123025006553 10.1016/j.rineng.2025.104577 |
| spellingShingle | Mohamad Aziz, Nur Atiqah Mohamed, Hassan Ong, Mei Yin Yunus, Robiah Law, Ming Chiat Abd Hamid, Hamidah Kania, Dina Mahlia, Teuku Meurah Indra Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction |
| title | Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction |
| title_full | Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction |
| title_fullStr | Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction |
| title_full_unstemmed | Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction |
| title_short | Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction |
| title_sort | numerical simulation of hotspot in polyol ester production using microwave-assisted reaction |
| url | http://psasir.upm.edu.my/id/eprint/120921/1/120921.pdf http://psasir.upm.edu.my/id/eprint/120921/ https://linkinghub.elsevier.com/retrieve/pii/S2590123025006553 |
| url_provider | http://psasir.upm.edu.my/ |