Recovery of Copper from Industrial Waste Water by Foam Flotation Process: A Review

Excess copper in water is not only harmful to human beings, but also interferes with the self-purification of bulk water and adverse effect on the microbiological treatment of wastewater. Copper is an essential element but can cause adverse health effects, however, at high doses, copper can cause acute effects, such as gastrointestinal (GI) disturbances, damage to the liver and renal systems, and anemia. The price of Copper has also been increasing in the past. In view of the increasing demand, it has become essential to recover the copper metal from industrial wastes. Foam Flotation is one of the adsorptive bubble separation techniques which have many advantages such as high selectivity to remove contaminants, high overflow, low detention periods and low operating costs