344 research outputs found
An assignment for part-machine cell formation problem in the presence of multiple process routes
No full textEffect of pH on the extraction characteristics of succinic and formic acids with tri-n-octylamine dissolved in 1-octanol
No full textA study was made on the extraction equilibria of succinic and formic acids from aqueous solutions using tri-n-octylamine (TOA) in 1-octanol. It was shown that the loading values of TOA decreased with increasing pH values. The apparent equilibrium constants for each acidamine complex were determined by an equilibrium model. In the case of succinic acid, the formation of a bisuccinate anion played an important role in the stoichiometry of the acid-amine complex
Application of reactive extraction to recovery of carboxylic acids
No full textCarboxylic acids are examples of compounds with wide industrial applications and high potential. This article presents the principles of reactive extraction along with the characteristics of tertiary amine extractants, while is given on considering the effect of the amine class and chain length. As such a brief overview the current research on reactive extraction, including the recovery of citric acid, selective amine-based extraction, and extractive fermentation is given. When discussing extractive fermentation, strategies for reducing solvent toxicity are also suggested based on specific examples. Finally, solvent regeneration and stripping of extracted acid are explained
Development of continuous predispersed solvent extraction of succinic acid by using colloidal liquid aphrons
No full textEffect of system parameters on stability of colloidal liquid aphrons for predispersed solvent extraction of succinic acid
No full textIn situ recovery of succinic acid from fermentation broth using ion exchange resin
No full textSuccinic acid is a four carbon dicarboxylic acid which has attracted great interest as a green feed stock for the manufacture of synthetic resins, biodegradable polymers and chemical intermediates. It is produced as an intermediate in the tricarboxylic acid cycle (TCA) and also as one of the fermentation products of anaerobic metabolism. However, in the case of fermentation process, accumulation of produced succinic acid in the fermentation broth inhibits its further production. Therefore, the total production of succinic acid could be increased with in situ recovery of succinic acid from fermentation broth using anion exchange resin packed column. In this study, adsorption isotherm and breakthrough curves for the separation of succinic acid were obtained and the effects of pH and temperature on adsorption of succinic acid were investigated
Synthesis of succinic anhydride form succinic acid crystal produced by microbial fermentation
No full textSample clean-up of red fluorescent protein for analysis using electric field in microfluidic device
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