Milestone Report - Demonstrate Braided Material with 3.5 g U/kg Sorption Capacity under Seawater Testing Condition (Milestone M2FT-15OR0310041 - 1/30/2015)

Janke, Christopher James¹  Das, Sadananda¹  Oyola, Yatsandra¹  Mayes, Richard T¹  Gill, Gary²  Kuo, Li-Jung²  Wood, Jordana² 

[1] ORNL;Pacific Northwest National Laboratory (PNNL)

关键词: uranium;    seawater;    amidoxime;   

DOI  :  10.2172/1185904
RP-ID  :  ORNL/LTR-2015/37
PID  :  OSTI ID: 1185904
Others  :  Other: AF5855000
Others  :  NEAF344

美国|英语

来源: SciTech Connect

【 摘 要 】

This report describes work on the successful completion of Milestone M2FT-15OR0310041 (1/30/2015) entitled, Demonstrate braided material with 3.5 g U/kg sorption capacity under seawater testing condition . 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 braided materials at the Oak Ridge National Laboratory (ORNL) and marine testing at the Pacific Northwest National Laboratory (PNNL). ORNL has recently developed four braided fiber adsorbents that have demonstrated uranium adsorption capacities greater than 3.5 g U/kg adsorbent after marine testing at PNNL. The braided adsorbents were synthesized by braiding or leno weaving high surface area polyethylene fibers and conducting radiation-induced graft polymerization of itaconic acid and acrylonitrile monomers onto the braided materials followed by amidoximation and base conditioning. The four braided adsorbents demonstrated capacity values ranging from 3.7 to 4.2 g U/kg adsorbent after 56 days of exposure in natural coastal seawater at 20 oC. All data are normalized to a salinity of 35 psu.