Results Thiolactic-acid modified TiO2 is very effective in removing and reducing lead and cadmium, as shown below. Residual cadmium concentration in the filtrate as a fraction of initial cadmium concentration. The reagents were equilibrated under aerobic conditions and switched to anoxic conditions for the reaction. The result for cadmium is particularly significant because there is no other known method that can accomplish these results. Figure 1 illustrates the changes that occur.
Preliminary results obtained for mercury are also very promising.