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A film diffusional effect on the apparent kinetic parameters in packed-bed immobilized enzyme reactors

A film diffusional effect on the apparent kinetic parameters in packed-bed reactors containing the enzyme immobilized on the surface of a nonporous support was investigated. A comparison of the plug-flow reactor model equation, expressed analytically in terms of the apparent kinetic parameters, with...

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Main Authors: Miyakawa, Hiromitsu, Shiraishi, Fumihide
Format: Article
Language:English
Published: John Wiley & Sons, Inc. 2008
Subjects:
Immobilized enzymes.
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/3383
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spelling my.unimap-33832008-12-01T04:22:55Z A film diffusional effect on the apparent kinetic parameters in packed-bed immobilized enzyme reactors Miyakawa, Hiromitsu Shiraishi, Fumihide Immobilized enzymes. A film diffusional effect on the apparent kinetic parameters in packed-bed reactors containing the enzyme immobilized on the surface of a nonporous support was investigated. A comparison of the plug-flow reactor model equation, expressed analytically in terms of the apparent kinetic parameters, with experimental data showed that the conventional linearized plot based on the reactor model equation was essentially nonlinear. Simulations for the apparent kinetic parameters were made using the intrinsic kinetic parameters and volumetric mass-transfer coefficient previously determined from experimental data. Consequently, the apparent kinetic parameters were found to decrease monotonically with the increase of liquid flow rate. On the other hand, with the increase of reactor-inlet substrate concentration, these constants first increased, passed through a maximum, and finally decreased toward their respective intrinsic values. 2008-12-01T04:22:55Z 2008-12-01T04:22:55Z 1997-08 Article Journal of Chemical Technology and Biotechnology, vol. 69, issue 4, 1997, pages 456-462 0268-2575 http://hdl.handle.net/123456789/3383 en John Wiley & Sons, Inc.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Immobilized enzymes.
spellingShingle Immobilized enzymes.
Miyakawa, Hiromitsu
Shiraishi, Fumihide
A film diffusional effect on the apparent kinetic parameters in packed-bed immobilized enzyme reactors
description A film diffusional effect on the apparent kinetic parameters in packed-bed reactors containing the enzyme immobilized on the surface of a nonporous support was investigated. A comparison of the plug-flow reactor model equation, expressed analytically in terms of the apparent kinetic parameters, with experimental data showed that the conventional linearized plot based on the reactor model equation was essentially nonlinear. Simulations for the apparent kinetic parameters were made using the intrinsic kinetic parameters and volumetric mass-transfer coefficient previously determined from experimental data. Consequently, the apparent kinetic parameters were found to decrease monotonically with the increase of liquid flow rate. On the other hand, with the increase of reactor-inlet substrate concentration, these constants first increased, passed through a maximum, and finally decreased toward their respective intrinsic values.
format Article
author Miyakawa, Hiromitsu
Shiraishi, Fumihide
author_facet Miyakawa, Hiromitsu
Shiraishi, Fumihide
author_sort Miyakawa, Hiromitsu
title A film diffusional effect on the apparent kinetic parameters in packed-bed immobilized enzyme reactors
title_short A film diffusional effect on the apparent kinetic parameters in packed-bed immobilized enzyme reactors
title_full A film diffusional effect on the apparent kinetic parameters in packed-bed immobilized enzyme reactors
title_fullStr A film diffusional effect on the apparent kinetic parameters in packed-bed immobilized enzyme reactors
title_full_unstemmed A film diffusional effect on the apparent kinetic parameters in packed-bed immobilized enzyme reactors
title_sort film diffusional effect on the apparent kinetic parameters in packed-bed immobilized enzyme reactors
publisher John Wiley & Sons, Inc.
publishDate 2008
url http://dspace.unimap.edu.my/xmlui/handle/123456789/3383
_version_ 1643787765829074944
score 13.222552

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