| abstract |
The invention discloses a method for recovering rhodium from rhodium octoate organic waste liquor. The method comprises the following steps: (1) adding water into the rhodium octoate organic waste liquor and regulating the pH (potential of Hydrogen) to 0.1-1; (2) stirring, adding a complexing agent and a phase transfer catalyst into the mixture of the step (1), stirring, carrying out complexing extraction to generate a water-soluble complex of rhodium, standing and dissolving the water-soluble complex of rhodium in the aqueous phase after oil water separation, wherein the complexing agent is one or more than one of water-soluble sulfate or water-soluble inorganic salt containing chloride ions and the phase transfer catalyst is a surfactant; (3) adding a precipitant into the aqueous phase, reacting, collecting precipitate and drying, wherein the precipitant is one or more than one of sodium carbonate, sodium hydroxide, sodium bicarbonate, potassium carbonate or potassium hydroxide. The method disclosed by the invention has the advantages that incineration is not needed, so that the air pollution and the energy waste are reduced, the loss of rhodium in intermediate steps is reduced, the loss of rhodium in an incineration process is avoided and the organic solvent can be recycled. |