FIELD: extraction of agents with the aid of sorbents; ferrous and non-ferrous metallurgy; cleaning industrial and domestic runoff.
SUBSTANCE: sorption is carried out on helium anionite containing exchange groups 
at preliminary treatment with acid, alkali or water; sorption is conducted at pH=0-2.
EFFECT: prompt and effective extraction of chromium ions from aqueous solutions at increased content of chromium.
3 dwg, 3 ex
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