Performance of a membrane bioreactor for enzymatic transesterification: Characterization and comparison with a batch stirred tank reactor

被引：6

作者：

Carvalho, CML ^{[1
]}

Cunnah, P ^{[1
]}

Aires-Barros, MR ^{[1
]}

Cabral, JMS ^{[1
]}

机构：

[1] Univ Tecn Lisboa, Ist Super Tecn, Ctr Engn Biol & Quim, Lisbon, Portugal

来源：

BIOCATALYSIS AND BIOTRANSFORMATION | 2000年 / 18卷 / 01期

关键词：

membrane bioreactors; batch stirred tank reactor; cutinase; kinetics; transesterification; synthesis;

D O I：

10.3109/10242420009040121

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A membrane bioreactor containing cutinase microencapsulated in reversed micelles of AOT/isooctane was used to perform the alcoholysis of butyl acetate with hexanol. The membrane used was a tubular ceramic membrane with a cut-off of 15,000 Da, Membrane characterization involved two parts: structure definition and operational properties. The former included membrane imaging to define the average membrane pore size. With the values obtained, characterization proceeded through the prediction of permeability and number of pores. The separation properties of the membrane were evaluated with the determination of rejection coefficients, based on transmission experiments, for all system components, including the substrates, products and the biocatalyst. The performance of the membrane bioreactor (MBR) was compared with the results obtained in a batch stirred tank reactor (BSTR) using the normalized residence time concept. The MBR operated as a differential reactor as theoretical treatment of experimental data demonstrated.

引用

页码：31 / 57

页数：27

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