TY - JOUR
T1 - Highly selective recovery of medium chain carboxylates from co-fermented organic wastes using anion exchange with carbon dioxide expanded methanol desorption
AU - Fernando-Foncillas, Clara
AU - Cabrera-Rodríguez, Carlos I.
AU - Caparrós-Salvador, Francisco
AU - Varrone, Cristiano
AU - Straathof, Adrie J.J.
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - Anion exchange chromatography
KW - Co-fermentation of organic wastes
KW - CO-expanded methanol
KW - Hexanoic acid
KW - Medium chain carboxylic acids
UR - http://www.scopus.com/inward/record.url?scp=85092216500&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2020.124178
DO - 10.1016/j.biortech.2020.124178
M3 - Article
C2 - 33049443
AN - SCOPUS:85092216500
SN - 0960-8524
VL - 319
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 124178
ER -