Fluidized bed ion exchange for improving purification of lactic acid from fermentation |
| |
Authors: | G. Raya-Tonetti P. Córdoba J. Bruno-bárcena F. Siñeriz N. Perotti |
| |
Affiliation: | (1) PROIMI-CONICET, Av. Belgrano y Pje, Caseros (, 4000) S.M Tucumán, Argentina |
| |
Abstract: | A strong anionic exchange resin was used to recover lactic acid directly from fermentation in an upflow fluidized bed column, resulting in 0.18 g lactic acid/g resin bound with a subsequent elution of 94%. When the culture broth was heated and adjusted pH to 8.0, 0.4 g lactic acid was bound per g resin, with a subsequent elution of 90%. L(+) and D(–) lactic acid isomers distribution was analyzed in the elution product resulting in an increase of L(+) isomer concentration. The resin did not alter its binding capacity after 23 cycles. |
| |
Keywords: | fluidized bed ion exchange lactic acid |
本文献已被 SpringerLink 等数据库收录! |