Rhodium water recovery_ What are the methods for recovering and refining rhodium water?

What are the methods for recovering and refining rhodium water?

Rhodium is a rare and valuable metal used in jewelry, electronics, and various industrial applications. Its characteristics make it an ideal material for many such applications, but because of its Scarcity, it is difficult to obtain pure materials. The most common methods for extracting rhodium from rhodium water are ion exchange, extraction, and electrolysis, and the most commonly used method is ion exchange.

Rhodium water recovery and extraction ion exchange method:

The ion exchange method is the process of separating molecules based on their charge. In this case, rhodium ions in the water are attracted by negatively charged resins. Place the resin into the chromatographic column, and then pass the aqueous solution containing rhodium ions through the column. When the solution passes through the chromatographic column, rhodium ions will attach to the resin. Other ions in the solution pass through the chromatographic column without being retained. Once all the solutions have passed through the column, wash the resin with sodium chloride solution. This solution removes any residual impurities from the resin and leaves behind rhodium. Once rhodium is separated from other ions, it must be purified. This is achieved by transferring the acidified ammonium chloride solution to the resin. Ammonium chloride solution reacts with rhodium ions to form stable complexes. Then, filter out the complex from the resin and collect the remaining solution. Then heat the solution to evaporate the solvent, leaving a dry solid containing pure rhodium. By repeating this process multiple times, the purity of Rh can be further improved. Each separation increases the purity once. Atomic absorption spectroscopy or X-ray diffraction can also be used to test the purity of Rh. Once the required purity is achieved, it can be used in various industries.

This method of extracting rhodium from water is relatively simple, efficient, and cost-effective. It produces high-purity rhodium that can be used for various applications. In addition, it can also be used to extract other metals such as gold, silver, and platinum from water.

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