FIELD: processes reducing quantity of metal in solution containing metal with usage of roots of plants for absorption, concentration and precipitation of metal. SUBSTANCE: method is realized by contact of solution with ground plant having root biological mass under conditions sufficient for removal of metal by given ground plant. Root biological mass of ground plant is separated from its other parts. Root biological mass is taken out of solution carrying metal. Plant is grown by hydroponic process. Plant can be genetically changed. System for removal metal from solution includes tank for solution and root biological mass that can be removed from tank. EFFECT: reduced cost of method. 42 cl, 8 dwg, 1 tbl
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