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Recovery of tartaric and malic acids from dilute aqueous effluents by solvent extaction technique
Author(s) -
Malmary Guy,
Vezier Annick,
Robert Arlette,
Molinier Jacques,
Mourgues Jean,
Conte Thierry
Publication year - 1994
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280600111
Subject(s) - tartaric acid , chemistry , solvent , aqueous solution , amine gas treating , effluent , malic acid , chromatography , extraction (chemistry) , organic chemistry , waste management , engineering , citric acid
Solvent extraction deserves consideration for the recovery of carboxylic acids from wastewater in order to clean up industrial effluents. Tartaric and malic acids are present in low concentration in the effluents of distilleries producing grape sugar. The separation of these acids from dilute aqueous solutions by the technique of dissociation–extraction employing respectively tributylphosphate dissolved in dodecane and triisooctylamine (tris‐(6‐methylheptyl)‐amine) dissolved in 1‐octanol as solvents was explored in this study. With a solvent ratio of 0·5 and a solvent containing 0·6 mole of triisooctylamine per dm 3 of the triisooctylamine + 1‐octanol mixture, the best percentages of malic and tartaric acids recovered were respectively 92 mass% and 99 mass% relative to the quantities of these acids present in the initial aqueous solutions.
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