PRECIPITATION OF COPPER IONS WITH HIGH CONCENTRATION FROM MODEL SOLUTION USING EXTRACTS FROM PISUM SATIVUM PODS SHELLS WITH DIFFERENT PH VALUES
The removal of copper ions from model solutions with the concentration of 1000 mg/dm<sup>3</sup> was investigated using pea pods shells. It was studied how pH values influence on reagents in extraction efficiency of copper (II) ions. The experiments have shown that the maximum degree of purification is observed if alcaline extracts from pea pods shells are used.