The effect of biosorbent dose on the equilibrium uptake of
cadmium ions was investigated with biosorbent masses of 0.5,
0.7, 1.0, 1.5, 2.0, 2.5, and 3.0 g. The experiments were performed
by adding known weights of copra meal to six 500 ml beakers
containing 100 ml of 128 mg/dm3 cadmium solution. The flasks
were shaken at 150 rpm and 297K for 2 h