FIELD: technological processes.
SUBSTANCE: invention relates to a method of removing perfluorinated alkanoic acid. Method includes steps of contacting a first solution with an anion-exchange resin to obtain a second solution and an anion-exchange resin which contains perfluorinated alkanoic acid adsorbed thereon. However, the perfluorinated alkanoic acid is present in the first solution in the first concentration and is present in the second solution in the second concentration which is lower than the first concentration. Further, the second solution is separated from the obtained anion-exchange resin.
EFFECT: technical result consists in removing perfluorinated alkanoic acid from solutions containing perfluorinated alkanoic acid and fluorinated alkoxy acid.
14 cl, 1 ex
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