Metal Organic Frameworks for removal of TcO4- from Hanford tank waste
EMSL Project ID
49146
Abstract
Among all the potential radioactive contamination from nuclear waste, the radioactive 99Tc is of particular concern. It is estimated that approximately 300 metric tons of 99Tc has been generated from nuclear reactors and weapons over the past several decades. Due to the weak beta-emitter together with the long half-life, the 99Tc is one of the most important radiotoxicity contributors for long term waste storage. Compared to other anions TcO4- is highly soluble and easily migrates within the earth’s crust and enters the food chain. One of the grand challenges of is to capture and convert the pertechnetate into low and high level glass waste. Metal organic frameworks shown to have superior performance in terms of adsorption capacity, kinetics towards ReO4- (surrogate for TcO4-) based on our recent laboratory studies. The PI is planning to communicate the experimental data obtained from ICP MS and diffraction to a high impact Nature Chemisry journal however it is very important to understand fundamentally the location of active sites in these materials. Therefore PI is requesting a rapid access to perform 2 samples on FIB and atom probe to identify the location of ReO4-
Project Details
Project type
Limited Scope
Start Date
2015-10-30
End Date
2015-12-30
Status
Closed
Released Data Link
Team
Principal Investigator