Abstract
Granulation of the composite adsorbent which consisted of hydrous titanium oxide and activated carbon was studied with PAH as a binder and the adsorptive property for uranium from sea water was examined.
The strength of the granulated composite adsorbent with PAH increased as the degree of hydrazidation and amount of addition of PAH increased. The strength of the granulated composite adsorbent in break-down test by shaking method showed 98% at 10% added PAH with the degree of hydrazidation of 73%.
PAH as the binder in the granulated composite adsorbent did not inhibited the adsorption of uranium from sea water, whereas the inhibitory effect of polyvinyl alcohol as a binder was found after formalization. The rate of adsorption of uranium on the granulated composite adsorbent was inversely proportional to the radius of granular. The granulated composite adsorbent was not disintegrated in elution process of uranium with acid or alkali carbonate solutions.
