Influence of operating parameters on concentration and purification of L-lactic acid using electrodialysis = 전기투석에 의한 젖산의 농축 및 정제에 영향을 주는 파마미터 연구

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Title
Influence of operating parameters on concentration and purification of L-lactic acid using electrodialysis = 전기투석에 의한 젖산의 농축 및 정제에 영향을 주는 파마미터 연구
Author(s)
H W Ryu; Young Min Kim; Y J Wee
Bibliographic Citation
Biotechnology and Bioprocess Engineering, vol. 17, no. 6, pp. 1261-1269
Publication Year
2012
Abstract
An experimental investigation was presented to determine the optimum configuration of influential parameters (concentrate volume, flow rate, temperature, initial lactate concentration, voltage, and impurities) for the best performance. AMX-CMX ion-exchange membranes were used in all experiments. Temperature was found to possess an important role in the increase of lactate recovery, and it was not increased to high values due to membrane destruction. When the higher voltage was applied to electrodialyzer, the better performance of electrodialysis was observed due to enhancement of the driving force. It was found that, to achieve an optimum operating condition, feed volume, concentrate volume, flow rate, temperature, initial lactate concentration in concentrate, and voltage should be 2 L, 1 L, 0.8 L/min, 32°C, 1 g/L, and 15.0 V, respectively. Under these optimized conditions, 97% of lactate was successfully recovered from the fermentation broth, where the lactate flux and energy cost were 7.2 ± 0.6 moles/m2/h and 0.25 kWh/kg, respectively. The results of experiments indicate that the lactic acid in the fermentation broth can be economically purified by electrodialysis.
Keyword
ConcentrationElectrodialysisEnterococciis faecalisLactic acidLactic acid fermentationRecovery
ISSN
1226-8372
Publisher
Springer
DOI
http://dx.doi.org/10.1007/si2257-012-0316-7
Type
Article
Appears in Collections:
1. Journal Articles > Journal Articles
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