FIELD: chemistry.
SUBSTANCE: invention relates to a method of purifying alcohol production wastes from carbonyl and carboxyl compounds. Method involves treating material with an acidic agent selected from a spent catalyst for esterification of carboxylic acids and/or re-esterification of carboxylic esters with ethanol with pH not higher than 3 and which is a mixture of at least paratoluene sulphonic acid, water and glycerine.
EFFECT: higher efficiency of purifying.
2 cl, 1 dwg, 8 ex
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