Modelling of immobilised enzyme biocatalytic membrane reactor performance

Show simple item record Du Preez, Ryne Clarke, Kim G. Callanan, Linda H. Burton, Stephanie G. 2016-08-01T07:26:26Z 2016-08-01T07:26:26Z 2015-06
dc.description.abstract Immobilised enzyme-catalysed conversions frequently provide specific advantages of selectivity overchemical conversions and further, facilitate continuous operation through biocatalyst retention andreuse. This study focuses on the development and modelling of an enzyme-catalysed continuous immo-bilised enzyme biocatalytic membrane reactor (BMR). The conversion of the amidase-catalysed lactamideto lactic acid process was used as an industrially representative system with which to evaluate the processperformance of the BMR.The model was developed from unsteady state differential mass balances incorporating a second orderenzyme decay. This model was validated from empirically determined conversions in dual experimentsusing 80 and 40 mM amide substrate, 6.4 and 20.1 mg immobilised amidase and a flow rate of 0.0005 and0.0001 L/min respectively.Model predictions over a range of amidase amounts and stabilities, flow rates and initial amide con-centrations quantified the direction and extent of the influence of these parameters on the maximumconversions attainable, consequently identifying the critical parameter ranges defining optimal BMR per-formance. Although the model has been developed and validated for the prediction of BMR performanceof the specific lactamide-lactic acid system, it nevertheless has broad applicability for and relevance tobroad-based prediction of the performance of immobilised enzyme BMR processes in general, irrespectiveof the specific enzyme or substrate moieties. en_ZA
dc.description.department Chemical Engineering en_ZA
dc.description.librarian hb2016 en_ZA
dc.description.sponsorship This work is based on research supported by the National Research Foundation (NRF),South Africa (SA). The authors gratefully acknowledge funding from the NRF and Stellenbosch University, SA. R du Preez acknowledges bursary funding from the NRF. en_ZA
dc.description.uri en_ZA
dc.identifier.citation Du Preez, R, Clarke, KG, Callanan, LH & Burton, SG 2015, 'Modelling of immobilised enzyme biocatalytic membrane reactor performance', Journal of Molecular Catalysis B : Enzymatic, vol. 119, pp. 48-53. en_ZA
dc.identifier.issn 1381-1177 (print)
dc.identifier.issn 1873-3158 (online)
dc.identifier.other 10.1016/j.molcatb.2015.05.015
dc.language.iso en en_ZA
dc.publisher Elsevier en_ZA
dc.rights © 2015 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Molecular Catalysis B : Enzymatic. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Molecular Catalysis B : Enzymatic, vol. 119, pp. 48-53, 2016. doi : 10.1016/j.molcatb.2015.05.015. en_ZA
dc.subject Immobilised enzyme en_ZA
dc.subject Mathematical modelling en_ZA
dc.subject Bioprocess en_ZA
dc.subject Biocatalytic membrane reactor (BMR) en_ZA
dc.title Modelling of immobilised enzyme biocatalytic membrane reactor performance en_ZA
dc.type Postprint Article en_ZA

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