Milestone Report - Complete New Adsorbent Materials for Marine Testing to Demonstrate 4.5 g-U/kg Adsorbent

Janke, Christopher James¹  Das, Sadananda¹  Oyola, Yatsandra¹  Mayes, Richard T.¹  Saito, Tomonori¹  Brown, Suree¹  Gill, Gary²  Kuo, Li-Jung²  Wood, Jordana² 

[1] ORNL;PNNL

关键词: Seawater Uranium Recovery;   

DOI  :  10.2172/1162052
RP-ID  :  ORNL/LTR-2014/318
PID  :  OSTI ID: 1162052
Others  :  R&D Project: AF5855000
Others  :  Other: M2FT-14OR03100115

美国|英语

来源: SciTech Connect

【 摘 要 】

This report describes work on the successful completion of Milestone M2FT-14OR03100115 (8/20/2014) entitled, ???Complete new adsorbent materials for marine testing to demonstrate 4.5 g-U/kg adsorbent???. This effort is part of the Seawater Uranium Recovery Program, sponsored by the U.S. Department of Energy, Office of Nuclear Energy, and involved the development of new adsorbent materials at the Oak Ridge National Laboratory (ORNL) and marine testing at the Pacific Northwest National Laboratory (PNNL). ORNL has recently developed two new families of fiber adsorbents that have demonstrated uranium adsorption capacities greater than 4.5 g-U/kg adsorbent after marine testing at PNNL. One adsorbent was synthesized by radiation-induced graft polymerization of itaconic acid and acrylonitrile onto high surface area polyethylene fibers followed by amidoximation and base conditioning. This fiber showed a capacity of 4.6 g-U/kg adsorbent in marine testing at PNNL. The second adsorbent was prepared by atom-transfer radical polymerization of t-butyl acrylate and acrylonitrile onto halide-functionalized round fibers followed by amidoximation and base hydrolysis. This fiber demonstrated uranium adsorption capacity of 5.4 g-U/kg adsorbent in marine testing at PNNL.