ALKALI METAL AND/OR ALKALI EARTH METAL EXTRACTION METHOD

摘要

The present invention provides an alkali metal and/or alkali earth metal extraction method that has excellent extraction efficiency and allows repeated use of an aqueous solution that extracts an alkali metal and/or alkali earth metal from a solid. The alkali metal and/or alkali earth metal extraction method is a method for extracting an alkali metal and/or alkali earth metal from a solid containing the alkali metal and/or alkali earth metal, the method including an elution step in which the solid is added to a neutral amino acid-containing aqueous solution or an amino acid-containing mixed aqueous solution produced by mixing a pH adjusting agent with an aqueous solution containing at least one of a neutral amino acid, an acidic amino acid and a basic amino acid so as to elute the alkali metal and/or alkali earth metal in the neutral amino acid-containing aqueous solution or the amino acid-containing mixed aqueous solution.

主权项

1. A method for extracting at least one of an alkali metal and an alkali earth metal from a solid containing at least one of the alkali metal and the alkali earth metal, the method comprising an elution step in which the solid is added to a neutral amino acid-containing aqueous solution so as to elute at least one of the alkali metal and the alkali earth metal in the neutral amino acid-containing aqueous solution.