We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Application of bipolar electrodialysis on recovery of free lactic acid after simultaneous saccharification and fermentation of cassava starch.
- Authors
Timbuntam, Walaiporn; Sriroth, Klanarong; Piyachomkwan, Kuakoon; Tokiwa, Yutaka
- Abstract
The efficiency of bipolar electrodialysis (BED) for the recovery of lactic acid from fermentation broth was evaluated. Three systems of BED (bipolar-anion, bipolar-cation and bipolar-anion-cation) at fixed voltage (20 V) were compared using a model solution of ammonium lactate (100 g l−1). Results showed that bipolar-anion (BED-anion) was the most beneficial in terms of lactate flux, current efficiency, energy consumption and recovery ratio. Consequently, BED-anion was used to purify lactic acid from fermentation broth which had been pre-treated with mono-polar electrodialysis (MED). The final lactic acid concentration and lactate flux obtained were 144 g l−1 and 393 g m−2 h−1, respectively. Using the two-step process (MED and BED-anion) the concentration of fermentation broth was increased by 33% and the total energy consumption was 2.76 kW h kg−1.
- Subjects
ELECTRODIALYSIS; LACTIC acid; FERMENTATION; CASSAVA; STARCH; AMMONIUM compounds
- Publication
Biotechnology Letters, 2008, Vol 30, Issue 10, p1747
- ISSN
0141-5492
- Publication type
Article
- DOI
10.1007/s10529-008-9771-9