Metal Recovery Activated Carbon
Coconut shell activated carbon is renowned for its effectiveness in recovering precious metals, predominantly gold, through the process of adsorption. The adsorption of gold by coconut shell activated carbon occurs in several ways:
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In cyanide solutions, gold is adsorbed onto the inner surface of activated carbon as ionic couples, neutral molecules, or complex ions. Metal ions form complexes and precipitate within the voids of the activated carbon. These metal ions can originate from the solution itself or the residual content of the activated carbon, potentially including ions such as Ca, K, Na, etc.
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Au(CN)2- undergoes chemical decomposition, resulting in the formation of insoluble AuCN, which accumulates within the carbon's voids.
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Certain gold-cyanide complexes are reduced to compounds containing gold atoms in oxidation states of 0 and 1 valence.
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Au(CN)2- or AuCN undergoes reduction to yield metallic gold (Au).
Coconut shell activated carbon demonstrates exceptional capability in directly recovering gold from cyanide gold-bearing solutions, offering advantages in terms of selectivity, adaptability, and reusability.
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​Zensanit manufacture high quality coconut shell activated carbon, contact us to get more info.
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