Present-day issues of seawater uranium extraction and chemical enrichment technology

Combination of an efficient extraction process of uranium from seawater and its chemical enrichment is a promising technology having the chance to display a leadership in the global uranium market. It may serve as a role of nuclear material supply or stock thus promoting the nuclear power generation over the world. In this report a special interest is focused on the recovery of uranium from seawater by immobilized tannin with the aid of Black stream (Oceanic current) combined as a line with uranium enrichment by the ACEP (Asahi Chemical Exchange Process) process for which the separation factor of 10{sup -3} is reported. (S. Ohno)