Ion flotation has been shown a promising method for the removal of heavy metal ions from wastewaters. The process of ion flotation is based on imparting the ionic metal species in wastewaters hydrophobic by use of surfactants and subsequent removal of these hydrophobic species by air bubbles (Polat and Erdogan, 2007). Yuan et al. (2008) investigated the potential of ion flotation to remove cadmium, lead and copper from dilute aqueous solution with a plant-derived biosurfactant tea saponin. The maximum removal of Pb²⁺, Cu²⁺ and Cd²⁺ can reach 89.95%, 81.13% and 71.17%, respectively, when the ratio of collector to metal was 3:1. Polat and Erdogan (2007) implemented ion flotation to remove Cu²⁺, Zn²⁺, Cr²⁺ and Ag⁺ from wastewaters. SDS and hexadecyltrimethyl ammonium bromide were used as collectors. Ethanol and methyl isobutyl carbinol were used as frothers. Metal removal reached about 74% under optimum conditions at low pH. At basic pH it became as high as 90%, probably due to the contribution from the flotation of metal precipitates.