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Study of lactic acid production from invert sugar with ion exchange membrane electrodialysis
Author(s)
Sirisangsawang, R.
Kitchaiya, P.
Date Issued
August 31, 2020
Type
Book Chapter
Abstract
Lactic acid is an important raw material for biodegradable production. This work was studied to lactic acid production from invert sugar. First step, the invert sugar was reacted with sodium hydroxide by alkaline degradation. Semi-batch reactor was used because it can controlled concentration of raw material and temperature. The yield of lactic acid from semi-batch was higher than batch reactor. It can produce high yield of lactic acid about 60%. Second step, the product from alkaline degradation was used for raw material for electrodialysis. For this experiment, the sodium lactate from alkaline degradation was changed to lactic acid with this technique. The constant voltage was applied at 4, 6 and 8 volts. When cation exchange membrane was used and voltage increased, the recovery of lactic acid decreased. It could recover about 50% lactic acid. Moreover, it can recycled sodium hydroxide for alkaline degradation.
Citation
Multidisciplinary Technologies for Industrial Applications, 79-85, 2020