Abstract
Flotation of aminoacetic acid (glycine, HL) by complexing with iron(III) was investigated in a cell (20 cm x 2.5 cm I. D. ). Recovery of 1.0 x10-3 mol.dm-3 of glycine was 97% by cornplexing with the equimolar concentration of iron(1ll) using 3.25 x10-3mol. dm-3 of dodecylammonium acetate (DAA) as a surfactant at pH 6.0. It seems that the flotation of glycine proceeds through the formation of the ion pair RRFeL(OH)- where R and n denote the cation of DAA and its mean number, respectively. This flotation was found to be applicable to recovery of glycine in a waste solution at a manufactory of dried bonito.
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