Detailed investigation of an electrodialytic process during the separation of lactic acid from a complex mixture

Developments in grass-/forage-based biorefineries

“…Downstream processing of the press-juice fraction involves a series of separation technologies to purify high-grade amino acids and food-grade lactic acid including ultrafi ltration, nanofi ltration, electrodialysis, reverse osmosis and ion exchange chromatography (Fig. 11.4 ;Ecker et al ., 2012 ;Mandl, 2010 ;Novalin and Zweckmair, 2009 ;Thang and Novalin, 2008 ;Koschuh et al ., 2005 ;Thang et al ., 2005 ;Thang et al ., 2004 ).…”

Extraction‐Fermentation Hybrid (Extractive Fermentation)

“…(2007), which also discussed additional types of EDs, including electrometathesis (EMT), electro-ion substitution (EIS), electro-electrodialysis (EED), electrodeionization (EDI), and two-phase electrodialysis (TPED). Various types of electrodialysis processes have been widely studied for the separation of carboxylic acids, including acetic, butyric, citric, formic, gluconic, itaconic, lactic, malic, propionic, pyruvic, succinic, and tartaric acids (Belafi-Bako et al ., 2004;Godjevargova et al ., 2004;Fidaleo et al ., 2005;Ferrer et al ., 2006;Fidaleo and Moresi, 2006;Groot 2011;Luo et al ., 2004;Strathmann 2004;Thang et al ., 2005;Wee et al ., 2005;Zelić and Vasić-Rački, 2005;Wang et al ., 2006;Wang et al ., 2011b;Zhang et al ., 2011). They have the advantage of producing free acid from salt without using acidifying chemicals.…”

Separation and concentration of lactic acid by electro-electrodialysis

“…Luo). tion [4], adsorption [4,5], reactive extraction [4,6,7], diffusion dialysis [4,8], ion exchange [1,4,9], esterification distillation [4,10], conventional electrodialysis [11,12], bipolar membrane electrodialysis [13,14], etc. Reactive extraction can selectively remove lactic acid from the fermentation broth, and may combine with the continuous fermentation.…”