Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7069843 | Bioresource Technology | 2016 | 18 Pages |
Abstract
The present study focused on organic acids (OAs) recovery from an acidogenic fermentation broth, which is the main problem regarding the use of OAs for production of ester-based new generation biofuels or other applications. Specifically, 10 solvents were evaluated for OAs recovery from aqueous media and fermentation broths. The effects of pH, solvent/OAs solution ratios and application of successive extractions were studied. The 1:1 solvent/OAs ratio showed the best recovery rates in most cases. Butyric and isobutyric acids showed the highest recovery rates (80-90%), while lactic, succinic, and acetic acids were poorly recovered (up to 45%). The OAs recovery was significantly improved by successive 10-min extractions. Alcohols presented the best extraction performance. The process using repeated extractions with 3-methyl-1-butanol led to the highest OAs recovery. However, 1-butanol can be considered as the most cost-effective option taking into account its price and availability.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Argyro Bekatorou, Agapi Dima, Panagiotia Tsafrakidou, Konstantina Boura, Katerina Lappa, Panagiotis Kandylis, Katerina Pissaridi, Maria Kanellaki, Athanasios A. Koutinas,