A New Type of Amidoxime-Group-Containing Adsorbent for the Recovery of Uranium from Seawater. II. Effect of Grafting of Hydrophilic Monomers

Effect of Shape and Size of Amidoxime-Group-Containing Adsorbent on the Recovery of Uranium from Seawater

“…3, it is possible to conclude that the inclusion of a hydrophilic group into the adsdorbent is not necessary to the adsorbent. The hydrophilic character of the adsorbent introduced by amidoximation ( [11][12][13][14] is probably adequate to take up a sufficient amount of seawater inside the adsorbent.…”

pH Effect on the uranium adsorption from seawater by a macroporous fibrous polymeric material containing amidoxime chelating functional group

“…Among them, amidoxime-group-containing polymeric adsorbent has attracted oneÕs wide attention because of the high loading of uranium and the rapid adsorption rate, which results from the high affinity of amidoxime-group-containing polymeric materials toward metal ions [17][18][19][20][21][22][23][24][25]. Moreover, this kind of chelating adsorbent possesses excellent mechanical strength for resisting the frication of seawater and a low probability of entrainment from the adsorption unit [26,27].…”

Adsorption of hazardous ions from radioactive waste on chelating cloth filter

“…Since the structure change of the chelating functional groups on CCF (especially AO) is quite complicated, both in acidic and basic solutions, the adsorption mechanism and the detailed composition of the complex formed between CCF and U(VI) have not been understood yet. Based on the isomeric change of AO (Omichi et al, 1986), the adsorption properties and mechanism of U(VI) uptake on the CCF are usually different at different basic conditions, which results in the formation of different complexes. One of the acceptably reversible equilibria can be expressed as (Kobuke et al, 1990):…”