ABSTRACT

Distribution of copper and cadmium between manganese oxide and solution has been investigated through the laboratory experiment. The amount of copper coprecipitated with manganese oxide is almost equal to that of cadmium. However, the amount of copper adsorbed on ferro-manganese nodule suspended in seawater medium is greater than that of cadmium. The experimental results suggest that almost all copper in manganese oxide is contained as an adsorbed form on the surface of manganese oxide, and that manganese oxide may not be a good scavenger to remove cadmium discharged to seawater.