At what pH is cyanide treatment performed?

Cyanide treatment is performed at a pH range of 10.5 to 11.5 because this alkaline condition enhances the effectiveness of chemical treatments, particularly those involving chlorine or other oxidizing agents that break down cyanide compounds. In this elevated pH environment, the dissociation of cyanide ions occurs more readily, allowing for better reaction kinetics with the treatment chemicals, ultimately leading to a more efficient detoxification process.

This pH range is optimal for processes such as the addition of sodium hypochlorite, which is a common treatment method for cyanide. Maintaining the pH within this range is crucial for ensuring that the cyanide is effectively converted into non-toxic substances, thus protecting both the treatment facility and the environment from harmful impacts.