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How much is recycled copper worth right now? 

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This heterogeneous copper catalyst can be recovered and recycled by a simple filtration of the reaction solution and used for at least 10 consecutive trials without any decrease in activity.
Furthermore, silica-supported copper can be recovered and recycled by a simple filtration procedure and used for five consecutive trials without decreases in activity.
Domestic recycled copper will become China's main sources of copper in the future.
This copper catalyst was air stable and could be recycled with minimal loss of activity.
These results show how the metals can be recycled for environmentally friendly disposal of tailings and reveal their resource value.
This is a strong argument for limiting the dissipation of copper and for recovering copper from wastes that have relatively high concentrations of copper.