FIELD: chemistry.
SUBSTANCE: solution which is to be purified is passed through sorption column, filled with granules of porous material with further regeneration of said sorbent. As porous material, is used sorbent obtained by alkali co-sedimentation of metals hydroxides at pH=9.6-10 from magnesium and aluminium salts taken in molar ratio 4:1, sediment formation, granulation, drying at 115-120°C. Furthermore, grain size of used granules is not more than 2.5-3 mm. Obtained in such way sorbent is highly selective with respect to [Fe(CN)6]3- and [Fe(CN)6]4-, stable in operating in multicyclic mode.
EFFECT: extension of technological possibilities of method in form of multicyclicity of purification, reduction of reagents consumption due to regeneration.
3 dwg, 3 ex
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