Scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor
Lipase-catalyzed production of palm esters by alcoholysis of palm oil with oleyl alcohol in n-hexane was performed in 2 L stirred-tank reactor (STR). Investigation on the performance of reactor operation was carried out in batch mode STR with single impeller mounted on the centrally located shaft. R...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2008
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| Online Access: | http://psasir.upm.edu.my/id/eprint/5805/ http://psasir.upm.edu.my/id/eprint/5805/1/Scale.pdf |
| _version_ | 1848840202286530560 |
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| author | Keng, Pei Sin Basri, Mahiran Ariff, Arbakariya Abdul Rahman, Mohd Basyaruddin Raja Abdul Rahman, Raja Noor Zaliha Salleh, Abu Bakar |
| author_facet | Keng, Pei Sin Basri, Mahiran Ariff, Arbakariya Abdul Rahman, Mohd Basyaruddin Raja Abdul Rahman, Raja Noor Zaliha Salleh, Abu Bakar |
| author_sort | Keng, Pei Sin |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Lipase-catalyzed production of palm esters by alcoholysis of palm oil with oleyl alcohol in n-hexane was performed in 2 L stirred-tank reactor (STR). Investigation on the performance of reactor operation was carried out in batch mode STR with single impeller mounted on the centrally located shaft. Rushton turbine (RT) impellers provide the highest reaction yield (95.8%) at lower agitation speed as compared to AL-hydrofoil (AL-H) and 2-bladed elephant ear (EE) impellers. Homogenous enzyme particles suspension was obtained at 250 rpm by using RT impeller. At higher impeller speed, the shear effect on the enzyme particles caused by agitation has decreased the reaction performance. Palm esters reaction mixture in STR follows Newtons’ law due to the linear relation between the shear stress
(s) and shear rate (dt/dy). High stability of Lipozyme RM IM was observed as shown by its ability to be repeatedly used to give high percentage yield (79%) of palm esters even after 15 cycles of reaction. The process was successfully scale-up to 75 L STR (50 L working
volume) based on a constant impeller tip speed approach, which gave the yield of 97.2% after 5 h reaction time. |
| first_indexed | 2025-11-15T07:23:36Z |
| format | Article |
| id | upm-5805 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:23:36Z |
| publishDate | 2008 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-58052016-09-28T02:15:43Z http://psasir.upm.edu.my/id/eprint/5805/ Scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor Keng, Pei Sin Basri, Mahiran Ariff, Arbakariya Abdul Rahman, Mohd Basyaruddin Raja Abdul Rahman, Raja Noor Zaliha Salleh, Abu Bakar Lipase-catalyzed production of palm esters by alcoholysis of palm oil with oleyl alcohol in n-hexane was performed in 2 L stirred-tank reactor (STR). Investigation on the performance of reactor operation was carried out in batch mode STR with single impeller mounted on the centrally located shaft. Rushton turbine (RT) impellers provide the highest reaction yield (95.8%) at lower agitation speed as compared to AL-hydrofoil (AL-H) and 2-bladed elephant ear (EE) impellers. Homogenous enzyme particles suspension was obtained at 250 rpm by using RT impeller. At higher impeller speed, the shear effect on the enzyme particles caused by agitation has decreased the reaction performance. Palm esters reaction mixture in STR follows Newtons’ law due to the linear relation between the shear stress (s) and shear rate (dt/dy). High stability of Lipozyme RM IM was observed as shown by its ability to be repeatedly used to give high percentage yield (79%) of palm esters even after 15 cycles of reaction. The process was successfully scale-up to 75 L STR (50 L working volume) based on a constant impeller tip speed approach, which gave the yield of 97.2% after 5 h reaction time. Elsevier 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/5805/1/Scale.pdf Keng, Pei Sin and Basri, Mahiran and Ariff, Arbakariya and Abdul Rahman, Mohd Basyaruddin and Raja Abdul Rahman, Raja Noor Zaliha and Salleh, Abu Bakar (2008) Scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor. Bioresource Technology, 99 (14). pp. 6097-6104. ISSN 0960-8524; ESSN: 1873-2976 http://www.sciencedirect.com/science/article/pii/S0960852407010735 10.1016/j.biortech.2007.12.049 |
| spellingShingle | Keng, Pei Sin Basri, Mahiran Ariff, Arbakariya Abdul Rahman, Mohd Basyaruddin Raja Abdul Rahman, Raja Noor Zaliha Salleh, Abu Bakar Scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor |
| title | Scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor |
| title_full | Scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor |
| title_fullStr | Scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor |
| title_full_unstemmed | Scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor |
| title_short | Scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor |
| title_sort | scale-up synthesis of lipase-catalyzed palm esters in stirred-tank reactor |
| url | http://psasir.upm.edu.my/id/eprint/5805/ http://psasir.upm.edu.my/id/eprint/5805/ http://psasir.upm.edu.my/id/eprint/5805/ http://psasir.upm.edu.my/id/eprint/5805/1/Scale.pdf |