The best percentage present it was with the activated support (ABP), it extinguishes its maximum
value of 98.540 % with a concentration of the MB of 25 mg/L, this percentage did not change perfectly
when the concentration increased for great values of 80 et 100 mg/l, in the contrary, the natural support it
reaches its maximum percentage of 93.448 % for the same concentration (25 mg/L) then it was started todecrease for the up concentrations witch is indeed shown in the table (3) below.