Recovery of metals adsorbed on chelating agents

Details Recovery of metals adsorbed on chelating agents Recovery of metals adsorbed on chelating agents

1986-05-27

1989-01-10

Miller, Edward A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

210673, 210674, 210688, 210692, 423 49, 423 54, 423 63, 423 70, 423 89, 423DIG14, C01G 4300, B01J 4500, B01J 4900

Patent

active

047972645

ABSTRACT:
Chelating agents on which metals such as uranium have been adsorbed are brought into contact with an eluent of aqueous solution containing reducing agents and basic compounds, until the metals are eluted. The elution is effected with large speed without degradation of the chelating agents. Preferred chelating agents are rather stable under basic conditions but not under acidic conditions, for example, those having .dbd.NOH group in their molecules. The reducing agents and basic compounds in the eluent are, for example, sulfurous acid or salts thereof and sodium hydroxide, respectively.

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