期刊
BIORESOURCE TECHNOLOGY
卷 167, 期 -, 页码 219-225出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.06.010
关键词
Nanofiltration; Reactive extraction; Bipolar electrodialysis; Fumaric acid; Fermentation broth
资金
- Biotechnological conversion of glycerol to polyols and dicarboxylic acids, implemented within the Operational Programme-Innovative Economy
- European Union [PO IG 01.01.02.074/09]
A novel approach based on a hybrid system allowing nanofiltration, bipolar electrodialysis and reactive extraction, was proposed to remove fumaric acid from fermentation broth left after bioconversion of glycerol. The fumaric salts can be concentrated in the nanofiltration process to a high yield (80-95% depending on pressure), fumaric acid can be selectively separated from other fermentation components, as well as sodium fumarate can be conversed into the acid form in bipolar electrodialysis process (stack consists of bipolar and anion-exchange membranes). Reactive extraction with quaternary ammonium chloride (Aliquat 336) or alkylphosphine oxides (Cyanex 923) solutions (yield between 60% and 98%) was applied as the final step for fumaric acid recovery from aqueous streams after the membrane techniques. The hybrid system permitting nanofiltration, bipolar electrodialysis and reactive extraction was found effective for recovery of fumaric acid from the fermentation broth. (C) 2014 Elsevier Ltd. All rights reserved.
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