Gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (CD-6) turbines and their combination in stirred tank bioreactor
The degree of oxygenation in stirred tank bioreactor is normally described and characterized L by the volumetric gas-liquid mass transfer coefficient (kL a). Throughout this study, the gas liquid mass transfer performance of dual impeller stirring system employing either two Rushton turbines (RT), t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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INSInet Publication
2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/14846/ http://psasir.upm.edu.my/id/eprint/14846/1/Gas-liquid%20mass%20transfer%20performance%20of%20dual%20impeller%20system%20employing%20rushtons%2C%20concave-bladed%20disc%20%28CD-6%29%20turbines%20and%20their%20combination%20in%20stirred%20tank%20bioreactor.pdf |
| _version_ | 1848842510844035072 |
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| author | Suhaili, Nurashikin Mohamed, Mohd Shamzi Mohamad, Rosfarizan Ariff, Arbakariya |
| author_facet | Suhaili, Nurashikin Mohamed, Mohd Shamzi Mohamad, Rosfarizan Ariff, Arbakariya |
| author_sort | Suhaili, Nurashikin |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The degree of oxygenation in stirred tank bioreactor is normally described and characterized L by the volumetric gas-liquid mass transfer coefficient (kL a). Throughout this study, the gas liquid mass transfer performance of dual impeller stirring system employing either two Rushton turbines (RT), two Concave-bladed disc (CD-6) turbines or the combination of both was comparatively investigated in Newtonian and non-Newtonian fluid systems. Static gassing-out technique was applied in all experimental kLa determinations and subsequent modeling of mass transfer correlations for all configurations were developed by incorporating the effects of power number (N3D2) and superficial velocity (Vg) on kLa. Ultimately, the use of dual CD-6 stirrers on a mixing shaft improved the oxygen transfer rate (OTR) by about 5-50 % and 18-65 % higher than the conventional RT-RT system in Newtonian and non-Newtonian systems, respectively. |
| first_indexed | 2025-11-15T08:00:17Z |
| format | Article |
| id | upm-14846 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:00:17Z |
| publishDate | 2010 |
| publisher | INSInet Publication |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-148462016-03-15T01:15:04Z http://psasir.upm.edu.my/id/eprint/14846/ Gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (CD-6) turbines and their combination in stirred tank bioreactor Suhaili, Nurashikin Mohamed, Mohd Shamzi Mohamad, Rosfarizan Ariff, Arbakariya The degree of oxygenation in stirred tank bioreactor is normally described and characterized L by the volumetric gas-liquid mass transfer coefficient (kL a). Throughout this study, the gas liquid mass transfer performance of dual impeller stirring system employing either two Rushton turbines (RT), two Concave-bladed disc (CD-6) turbines or the combination of both was comparatively investigated in Newtonian and non-Newtonian fluid systems. Static gassing-out technique was applied in all experimental kLa determinations and subsequent modeling of mass transfer correlations for all configurations were developed by incorporating the effects of power number (N3D2) and superficial velocity (Vg) on kLa. Ultimately, the use of dual CD-6 stirrers on a mixing shaft improved the oxygen transfer rate (OTR) by about 5-50 % and 18-65 % higher than the conventional RT-RT system in Newtonian and non-Newtonian systems, respectively. INSInet Publication 2010-03 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/14846/1/Gas-liquid%20mass%20transfer%20performance%20of%20dual%20impeller%20system%20employing%20rushtons%2C%20concave-bladed%20disc%20%28CD-6%29%20turbines%20and%20their%20combination%20in%20stirred%20tank%20bioreactor.pdf Suhaili, Nurashikin and Mohamed, Mohd Shamzi and Mohamad, Rosfarizan and Ariff, Arbakariya (2010) Gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (CD-6) turbines and their combination in stirred tank bioreactor. Journal of Applied Sciences Research, 6 (3). pp. 234-244. ISSN 1816-157X http://www.aensiweb.com/old/jasr/jasr_march_2010.html |
| spellingShingle | Suhaili, Nurashikin Mohamed, Mohd Shamzi Mohamad, Rosfarizan Ariff, Arbakariya Gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (CD-6) turbines and their combination in stirred tank bioreactor |
| title | Gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (CD-6) turbines and their combination in stirred tank bioreactor |
| title_full | Gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (CD-6) turbines and their combination in stirred tank bioreactor |
| title_fullStr | Gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (CD-6) turbines and their combination in stirred tank bioreactor |
| title_full_unstemmed | Gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (CD-6) turbines and their combination in stirred tank bioreactor |
| title_short | Gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (CD-6) turbines and their combination in stirred tank bioreactor |
| title_sort | gas-liquid mass transfer performance of dual impeller system employing rushtons, concave-bladed disc (cd-6) turbines and their combination in stirred tank bioreactor |
| url | http://psasir.upm.edu.my/id/eprint/14846/ http://psasir.upm.edu.my/id/eprint/14846/ http://psasir.upm.edu.my/id/eprint/14846/1/Gas-liquid%20mass%20transfer%20performance%20of%20dual%20impeller%20system%20employing%20rushtons%2C%20concave-bladed%20disc%20%28CD-6%29%20turbines%20and%20their%20combination%20in%20stirred%20tank%20bioreactor.pdf |