Where does palladium carbon recycling come from? What are the recovery methods for palladium carbon

1、 Main source of Palladium on carbon

Pharmaceutical industry: In the pharmaceutical industry, Palladium on carbon is widely used in organic synthesis reactions, such as hydrogenation, dehydrogenation, esterification, olefinization, etc. During production, part of Palladium on carbon will be discharged with waste water and waste gas, and some will be left in production equipment and containers. These are important sources of palladium carbon recovery.

Chemical industry: in the chemical industry, Palladium on carbon is mainly used in petrochemical, organic synthesis and other fields. During the production process, exhaust gas, wastewater, and palladium containing waste generated during equipment cleaning are the main sources of palladium carbon recovery.

Automobile exhaust purifier: as an important part of automobile exhaust purifier, Palladium on carbon is responsible for transforming harmful exhaust pollutants into harmless substances. With the expiration of the service life of the automobile exhaust purifier, the Palladium on carbon will gradually become invalid, and needs to be recycled and reused.

2、 Palladium carbon recovery method

1. Wet recovery: Wet recovery is a commonly used method for palladium carbon recovery. Mainly including acid leaching extraction, hydrolysis precipitation, solvent extraction and other processes. These methods have a high recovery rate for Palladium on carbon, but corrosive chemical reagents such as acid and alkali are required in the operation process, and a large amount of waste water and waste gas will be generated at the same time.

2. Dry recovery: dry recovery mainly decomposes or oxidizes organic matters in Palladium on carbon through high-temperature calcination, oxidation and reduction. Subsequently, palladium is separated from the carbon matrix through high-temperature smelting, Vacuum distillation and other processes. The dry recovery process does not require the use of a large amount of chemical reagents, and there are fewer wastewater and exhaust emissions. However, the energy consumption is high, and the equipment investment cost is also relatively high.

3. Biological recovery: Biological recovery is an emerging method for palladium carbon recovery, which utilizes microorganisms such as bacteria and fungi to degrade and adsorb palladium containing waste. In the process of biological recovery, microorganisms can adsorb palladium at lower concentrations, thereby achieving the recovery of palladium and carbon. This method has the advantages of environmental friendliness and low cost, but it is still in the research and experimental stage and has not yet been widely applied.

4. Comprehensive recycling: For palladium carbon waste from different sources and forms, a comprehensive recycling strategy can be adopted. Firstly, appropriate pre-treatment methods such as crushing, screening, and concentration should be selected based on the nature of the waste and its palladium content. Then, different recovery technologies such as wet, dry, and biological methods are used for palladium carbon recovery. Finally, the recovered palladium is refined to improve its purity for reuse.

The above is where does Dingfeng Precious Metal Recycling recover palladium and carbon? Complete answers to all questions regarding the recovery methods of palladium carbon.