Application of bipolar electrodialysis on recovery of free lactic acid after simultaneous saccharification and fermentation of cassava starch
| Autor: | Klanarong Sriroth, Yutaka Tokiwa, Walaiporn Timbuntam, Kuakoon Piyachomkwan |
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| Rok vydání: | 2008 |
| Předmět: |
Manihot
Chromatography Starch Ammonium lactate Bioengineering General Medicine Electrodialysis Applied Microbiology and Biotechnology Culture Media Lactic acid chemistry.chemical_compound Hydrolysis chemistry Biochemistry Fermentation Electrochemistry medicine Ammonium Lactic Acid Fermentation broth Dialysis Biotechnology medicine.drug |
| Zdroj: | Biotechnology Letters. 30:1747-1752 |
| ISSN: | 1573-6776 0141-5492 |
| Popis: | 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). |
| Databáze: | OpenAIRE |
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