EXPLORATION OF AHP RESIN SYNTHESIZED IN AQUEOUS PHASE AND ITS ADSORPTION MECHANISM OF URANIUM

AHP resin organic adsorbent for extraction of uranium from sea water,which was synthesized in the aqueous phase with tetraethylene pentamine(TEPA), epichlorohydrin(ECH)and C-reagent as the raw material and rubber solvent oil(120 gasoline)as the pore-producing agent is recommended here.The characteristics of the resin are:(1)It has a great exchange capacity;20-40 mesh of wet sample was able to adsorb stably over 900μg U/g-dry resin through which fresh sea water was fassed for 15 days(the average adsorption capacity of five sets of sample was 1163 μg U/g-dry resin,but 1560μg U/g-dry resin was the highest degree of adsoption among the samples);(2)It has a high exchange rate;a gram of the resin was able to absorb about 80μg of uranium every day;(3)it has a good selection and a high extraction rate and is less affected by the temperature of sea water;(4)it is reusable:there was a set of samples which had been used 12 times and the average adsorption capacity was 620μg U/g-dry resin and the loss by solution was about 5.6%;(5)It has a lower mechanical strength and a higher loss on dissolving:the loss by solution in the first period of use was about 20%. This sort of resin has never been reported before.