FIELD: metallurgy.
SUBSTANCE: invention relates to extraction of heavy metals and can be used for extraction of, for example, copper, zinc, cobalt or nickel ions from water solutions. This invention involves withdrawal by said ions by extraction. Extragent represents 0.1% water solution of humic acids extracted from heat-treated vegetable waste while diluent is isoamyl alcohol. Process is executed at pH=7-9 with subsequent re-extraction of organic phase by 2M hydrochloric acid and with determination of metal ion content in water phase by chelatometry.
EFFECT: simplified process, higher efficiency of extraction of heavy metal ions, possibility to return said ions to water solution.
1 dwg
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