conducted by added 4 M HCl as activating agent. The results show that acidity of solid
carbon active before activated with adsorption weight is 3.2865 x10-3 mol. g-1 and after
activated is 3.5052 x10-3 mol. g-1. Active carbon result is used for the application at
adsorption Cd with some variantion, that are optimum concentration 20 ppm and optimum
time 80 min. Cd adsorption from active carbon was analyzed by AAS. The results are …