Highly selective recovery of medium chain carboxylates from co-fermented organic wastes using anion exchange with carbon dioxide expanded methanol desorption

Fernando Foncillas, C.; Cabrera Rodriguez, C.I.; Caparrós-Salvador, Francisco; Varrone, Cristiano; Straathof, Adrie J.J.

doi:10.1016/j.biortech.2020.124178

Highly selective recovery of medium chain carboxylates from co-fermented organic wastes using anion exchange with carbon dioxide expanded methanol desorption

Title

Highly selective recovery of medium chain carboxylates from co-fermented organic wastes using anion exchange with carbon dioxide expanded methanol desorption

Author

Fernando Foncillas, C. (Aalborg University)
Cabrera Rodriguez, C.I. (Wageningen University & Research)
Caparrós-Salvador, Francisco (Greencovery, Wageningen)
Varrone, Cristiano (Aalborg University)
Straathof, Adrie J.J. (TU Delft BT/Bioprocess Engineering)

Date

2021

Abstract

The aim of this work was to recover a mixture of carboxylates ranging from 2 to 7 carbon atoms using a strong anion exchange resin, followed by desorption with CO₂-expanded methanol. Medium chain carboxylates hexanoate and heptanoate adsorbed better than acetate, and the corresponding medium chain carboxylic acids desorbed easier than acetic acid. Consequently, hexanoate and heptanoate were concentrated up to 14.6 and 20.7 times, respectively. These findings will enable effective separation and purification of the produced carboxylic acids. Notably, the presence of inorganic ions in the sample, such as chloride, decreased the adsorption affinity compared to a synthetic mixture only of carboxylates.

Subject

Anion exchange chromatography
Co-fermentation of organic wastes
CO-expanded methanol
Hexanoic acid
Medium chain carboxylic acids

To reference this document use:

http://resolver.tudelft.nl/uuid:078c11fe-7538-46c6-9ea3-64f91536035e

DOI

https://doi.org/10.1016/j.biortech.2020.124178

ISSN

0960-8524

Source

Bioresource Technology, 319

Part of collection

Institutional Repository