FIELD: chemistry.
SUBSTANCE: method involves boron industry waste (borogypsum) processing with the waste containing calcium sulphate dehydrate and amorphous silica. The waste is processed by means of a stoichiometric amount of potassium hydroxide and sodium hydroxide in a solid-to-liquid ratio 1:(19-20).
EFFECT: producing the high-capacity sorbent in relation to heavy metal ions.
2 cl, 2 ex
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