Lewatit® MonoPlus TP 220 is a macroporous weakly basic resin with chelating bis-picolylamine groups for copper, nickel and cobalt processing solutions. lt has a monodisperse bead size distribution, i.e. beads of an uniform size, which results in high adsorption kinetics and a good utilization of the theoretical capacity.
Under acidic conditions (pH =2) heavy metal cations are removed from aqueous solutions consistent with the following selectivity series: Cu2+>>Ni2+>U022+>Fe3+>Zn2+>Co2+>Cd2+>Fe2+.
Lewatit® MonoPlus TP 220 is especially suitable for the use in the following applications:
While most metals are removed from the loaded resin with a conventional acid strip, copper can only efficiently be desorbed with ammonia solution.