| 摘要 |
<p>A process and electrodialysis cell for regenerating used chromic acid baths for reuse. The process and apparatus have an anolyte chamber and a catholyte chamber separated by a cation permeable membrane and utilize as an improved catholyte solution an aqueous mixture of a water soluble salt such as sodium sulfate. A preferred anode which is not decomposed by the chromic acid bath comprises by weight about 1.5% of silver, about 5% of antimony, about 3% of tin and the balance lead.</p> |
