The effect of depuration on lead levels of the cockles Anadara sp. by using activated carbon as a filter

Consumption of cockles with high concentrations of lead metal (Pb) will hurt harm humans from health aspects. The concentration of Pb metal in cockles can be reduced through a depuration process. This study aims to determine the efficient time of retention and the rate of decrease in the concentration of Pb in the cockles (Anadara sp.) by using activated carbon as a filter during the depuration process. The treatment of study consists of P0 (no depuration), P1 (depuration 24 Hours), P2 (depuration 48 Hours), and P3 (depuration 72 Hours). The results showed that the process of depuration of the cockles for 24 hours with activated carbon filters was able to reduce the Pb metal content to 0.926 mg/kg and even the depuration process for 72 hours, the efficiency of the depuration process increased to 86.52% so that the Pb content in the cockles became 0.273 mg/kg. Overall, the duration of the process of depuration of the cockles with activated charcoal as a filter can increase the efficiency of Pb metal reduction in the cockles so that it according to SNI 7387: 2009, which is the maximum metal content of Pb in the shellfish 1.5 mg/kg.