FIELD: technology of water and air purification.
SUBSTANCE: invention relates to sorbents for the purification of drinking and waste water. Sorbent based on modified silica gel containing grafted groups of N-(propyl)ethylenediamine triacetic acid is proposed. Sorbent is characterized by the structural formula 
. Concentration of grafted groups of amino groups is 0.80 mmol/g±10 %.
EFFECT: invention provides an increase in sorption characteristics, expansion of the spectrum of recoverable substances, the possibility of sorbent regeneration and its secondary use.
7 cl, 2 dwg, 4 tbl
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