Metal recovery agent, metal compound recovery agent, and method for recovering metal or metal compound

Abstract

The present invention relates to a metal recovery agent or a metal compound recovery agent including: a dried matter of a cell or a cell derivative of the red algae belonging to the order Cyanidiales, or an artificial matter that imitates the dried matter. The present invention also relates to a method for recovering a metal or a metal compound including: an addition step of adding a dried matter of a cell or a cell derivative of the red algae belonging to the order Cyanidiales, or an artificial matter that imitates the dried matter to a metal solution; and an adsorption step of causing a metal or a metal compound contained in the metal solution to be adsorbed onto the cell or the cell derivative derived from the dried matter, or the artificial matter.

1 . A metal recovery agent or a metal compound recovery agent comprising:
 a dried matter of a cell of red algae belonging to the order Cyanidiales;   a dried matter of a cell derivative of red algae belonging to the order Cyanidiales; or   an artificial matter that imitates the dried matter of the cell or the dried matter of the cell derivative.   
     
     
         2 . A method for recovering a metal or a metal compound, comprising:
 an addition step of adding a dried matter of a cell of the red algae belonging to the order Cyanidiales, a dried matter of a cell derivative of the red algae belonging to the order Cyanidiales, or an artificial matter that imitates the dried matter of the cells or the dried matter of the cell derivative to a metal solution; and   an adsorption step of causing a metal or a metal compound contained in the metal solution to be adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter.   
     
     
         3 . The method for recovering a metal or a metal compound according to  claim 2 ,
 wherein an amount of the dried matter or the artificial matter added in the addition step is 0.001 mg or more with respect to 100 ml of the metal solution.   
     
     
         4 . The method for recovering a metal or a metal compound according to  claim 2 ,
 wherein the adsorption step is a step of causing at least one metal selected from the group consisting of gold, palladium, ruthenium, platinum, iridium, and osmium, or at least one metal compound containing the metal selected from the group consisting of gold, palladium, ruthenium, platinum, iridium, and osmium contained in the metal solution to be selectively adsorbed.   
     
     
         5 . The method for recovering a metal or a metal compound according to  claim 2 ,
 wherein an acid concentration of the metal solution is 0.5 mmol/L or more.   
     
     
         6 . The method for recovering a metal or a metal compound according to  claim 2 ,
 wherein the adsorption step is a step of recovering a gold cyanide complex contained in the metal solution.   
     
     
         7 . The method for recovering a metal or a metal compound according to  claim 2 , further comprising:
 a step of refining the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter.   
     
     
         8 . The method for recovering a metal or a metal compound according to  claim 2 , further comprising:
 an elution step of eluting the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter using a mixed solution containing ammonia and an ammonium salt.   
     
     
         9 . The method for recovering a metal or a metal compound according to  claim 3 ,
 wherein the adsorption step is a step of causing at least one metal selected from the group consisting of gold, palladium, ruthenium, platinum, iridium, and osmium, or at least one metal compound containing the metal selected from the group consisting of gold, palladium, ruthenium, platinum, iridium, and osmium contained in the metal solution to be selectively adsorbed.   
     
     
         10 . The method for recovering a metal or a metal compound according to  claim 3 ,
 wherein an acid concentration of the metal solution is 0.5 mmol/L or more.   
     
     
         11 . The method for recovering a metal or a metal compound according to  claim 4 ,
 wherein an acid concentration of the metal solution is 0.5 mmol/L or more.   
     
     
         12 . The method for recovering a metal or a metal compound according to  claim 3 ,
 wherein the adsorption step is a step of recovering a gold cyanide complex contained in the metal solution.   
     
     
         13 . The method for recovering a metal or a metal compound according to  claim 3 , further comprising:
 a step of refining the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter.   
     
     
         14 . The method for recovering a metal or a metal compound according to  claim 4 , further comprising:
 a step of refining the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter.   
     
     
         15 . The method for recovering a metal or a metal compound according to  claim 5 , further comprising:
 a step of refining the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter.   
     
     
         16 . The method for recovering a metal or a metal compound according to  claim 6 , further comprising:
 a step of refining the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter.   
     
     
         17 . The method for recovering a metal or a metal compound according to  claim 3 , further comprising:
 an elution step of eluting the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter using a mixed solution containing ammonia and an ammonium salt.   
     
     
         18 . The method for recovering a metal or a metal compound according to  claim 4 , further comprising:
 an elution step of eluting the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter using a mixed solution containing ammonia and an ammonium salt.   
     
     
         19 . The method for recovering a metal or a metal compound according to  claim 5 , further comprising:
 an elution step of eluting the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter using a mixed solution containing ammonia and an ammonium salt.   
     
     
         20 . The method for recovering a metal or a metal compound according to  claim 6 , further comprising:
 an elution step of eluting the metal or the metal compound adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter using a mixed solution containing ammonia and an ammonium salt.