Preparation of Fibrous Adsorbent Containing Amidoxime Groups from Composite Poly (acrylonitrile) Fiber and Its Adsorption Ability for Uranium

Abstract

A fibrous adsorbent having amidoxime groups was prepared from a composite fiber consistingof two different poly (acrylonitrile), these acrylonitrile contents different from each other.The fibrous adsorbent, derived from reaction of the poly (acrylonitrile) fiber with hydroxylaminefor 8 hours followed by alkali-treatment for 24 hours, exhibited the highest adsorption rate foruranium from seawater: its uranium uptake ability was 10 mg/g in 80 days from seawater. Furthermore, this fibrous adsorbent showed a higher fiber strength than those reported earlier. Therefore, this fibrous adsorbent seems to be promising in the recovery of uranium from seawater.