TY - BOOK
T1 - Mechanistic Understanding of Silver Sorbent Aging Processes in Off-Gas Treatment
AU - Choi, Seungrag
AU - Nan, Yue
AU - Tavlarides, Lawrence L.
AU - Wiechert, Alexander I.
AU - Shen, Ziheng
AU - Yiacoumi, Sotira
AU - Ladshaw, Austin P.
AU - Tsouris, Costas
PY - 2020
Y1 - 2020
N2 - The effect of aging in various off-gas streams including dry air, humid air, 1% NO/N2, 2% NO2/air, and a gas mixture consisting of 99.25% humid air (dew point: -15 °C), 0.25% NO/N2, and 0.5% NO2/air in terms of concentration on reduced silver exchanged mordenite (Ag0Z) and silver functionalized silica aerogel (Ag0 -aerogel) were studied in this project. Utilizing simple and sophisticated experimental information combined with molecular and macroscopic mechanistic modeling, this project has significantly advanced the current understanding of aging for silver bearing adsorbents in nuclear-fuel-reprocessing off-gas streams. In addition, this project has produced models that can be utilized to predict the influence of adsorbent aging on the uptake kinetics and capacity of aged adsorbents for iodine and iodine-containing organic compounds. The results of the study have been published in the open literature, and can be used to help DOE better predict the removal of radioactive gases from nuclear-fuel-reprocessing off-gas streams.
AB - The effect of aging in various off-gas streams including dry air, humid air, 1% NO/N2, 2% NO2/air, and a gas mixture consisting of 99.25% humid air (dew point: -15 °C), 0.25% NO/N2, and 0.5% NO2/air in terms of concentration on reduced silver exchanged mordenite (Ag0Z) and silver functionalized silica aerogel (Ag0 -aerogel) were studied in this project. Utilizing simple and sophisticated experimental information combined with molecular and macroscopic mechanistic modeling, this project has significantly advanced the current understanding of aging for silver bearing adsorbents in nuclear-fuel-reprocessing off-gas streams. In addition, this project has produced models that can be utilized to predict the influence of adsorbent aging on the uptake kinetics and capacity of aged adsorbents for iodine and iodine-containing organic compounds. The results of the study have been published in the open literature, and can be used to help DOE better predict the removal of radioactive gases from nuclear-fuel-reprocessing off-gas streams.
KW - 22 GENERAL STUDIES OF NUCLEAR REACTORS
U2 - 10.2172/1778083
DO - 10.2172/1778083
M3 - Commissioned report
BT - Mechanistic Understanding of Silver Sorbent Aging Processes in Off-Gas Treatment
CY - United States
ER -