| About this Abstract |
| Meeting |
Materials Science & Technology 2019
|
| Symposium
|
Materials Issues in Nuclear Waste Management
|
| Presentation Title |
Aerogels with Enhanced Gas Permeability and Mechanical Strength for use as Membranes in Radioiodine Capture |
| Author(s) |
Krista Carlson |
| On-Site Speaker (Planned) |
Krista Carlson |
| Abstract Scope |
Silver-loaded sorbents have become the standard for removing volatile iodine-129 because of the high trapping capability and low solubility of AgI in water. Aerogels containing silver are promising sorbents with high sorption capacity and a clear pathway for conversation to a chemically durable waste form. However, one of the main hinderances to adopting this ultralight material into a facility is in its implementation into a suitable capture system. We are addressing this challenge through the formation of aerogel membranes with increased gas permeability and mechanical strength. The method of membrane formation will be discussed, in addition to the iodine loading capacity of un-aged membranes and those aged in an NO2 gas. Thus far, we have made membranes with over an order of magnitude greater permeability than traditional aerogels and twice the iodine loading capacity. |