Abstract
Abstract Experimental work involving recovery of uranium from seawater is currently under way in several countries. Hydrous titanium oxide has been repeatedly identified as the most promising candidate adsorbent. However, many of its properties such as distribution coefficient, selectivity, loading, and possibly long-term stability may be inadequate for a practical recovery system. Also, evaluations of the energy efficiency of pumped or tidal power methods of contacting the seawater with the hydrous titanium oxide are in major disagreement. Published estimates of the cost of recovering U3O8 vary by an order of magnitude. Needed future research and development activities are defined, based on a literature review of the available chemical information. The prime recommendation is for a fundamental laboratory chemical development program to achieve improved absorbent properties, either with hydrous titanium oxide or other materials. Some unresolved engineering aspects of uranium recovery from seawater are also identified.
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