COMPLEXATION PARAMETERS OF HEAVY-METALS BY OLIVE MILL WASTE-WATER DETERMINED BY A CATION-EXCHANGE RESIN

Complexing parameters in aqueous systems containing heavy metals and w astewater from olive-oil mill (WOM) have been estimated using a cation exchange resin method. The parameters estimated were the maximum comp lexing ability (MCA), the stability constant (Kc) and a parameter indi cating the stoichiometrical characteristics of the complex (a). MCA of WOM for Cu, Zn, Pb and Mn was 0.470, 0.314, 0.068 and 0.300 mmol (g W OM)(-1) respectively, and was related with the ionic radii of the vari ous metal ions. The log Kc values followed the sequence: Cu>Pb>Zn>Mn i n agreement with their respective electronegativities. In the case of Cu and ph, data obtained here was compared with that determined in oth er work.