Issue 85, 2014

Development of reactive extraction systems for itaconic acid: a step towards in situ product recovery for itaconic acid fermentation

Abstract

Process optimization by integration of bioconversion with product separation and recovery i.e. in situ product recovery (ISPR) is an important means to develop a sustainable and petrochemical-competitive biotechnological method for itaconic acid production. Since amine-based (reactive) extraction is known to be able to separate carboxylic acids efficiently, this technique was investigated in the present work. With the first step towards development of an integrated itaconic acid fermentation–extraction system, an extensive range of extractants consisting of eight different amines in various combinations with seventeen various types of diluents (alcohols, esters, alkanes) was experimentally evaluated for application in reactive extraction of itaconic acid. Compared to physical extractants using only diluents, reactive extractants based on amine-diluent combinations demonstrated higher extractive yields. Extractants with the highest extractive capacity were selected for further research aimed to optimize the concentration of amines for maximum extraction yield. Additionally equilibrium curves were obtained for the selected systems to evaluate extraction performance as a function of itaconic acid concentration. Experiments to elucidate the effect of medium components on the extraction performance were also performed. Nine reactive extraction systems were found to be most suitable i.e. trioctylamine, dioctylamine and N-methyldioctylamine as amine extractants solved in 1-octanol, pentylacetate and methyloctanoate. The critical results of this study form the basis for future investigations for large scale experiments with reactive extraction systems and development of appropriate ISPR configurations for itaconic acid.

Graphical abstract: Development of reactive extraction systems for itaconic acid: a step towards in situ product recovery for itaconic acid fermentation

Associated articles

Article information

Article type
Paper
Submitted
03 Jul 2014
Accepted
12 Sep 2014
First published
22 Sep 2014

RSC Adv., 2014,4, 45029-45039

Author version available

Development of reactive extraction systems for itaconic acid: a step towards in situ product recovery for itaconic acid fermentation

G. Kaur and K. Elst, RSC Adv., 2014, 4, 45029 DOI: 10.1039/C4RA06612J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements