Environmental Molecular Sciences Institute support for the Center for Environmental Molecular Sciences

Dodge, C. ; Fitts, J. ; Francis, A.J. ; Fuhrmann, M. ; Gillow, J. ; Kalb, P. ; Northrup, P. ; Chidambaram, D. ; Crosson, G.

Brookhaven National Laboratory

关键词: Slags;    Zeolites;    Portland Cement;    Actinides;    Source Terms;   

DOI  :  10.2172/896304
RP-ID  :  ERSD-1023761-2006
RP-ID  :  None
RP-ID  :  896304

美国|英语

来源: UNT Digital Library

【 摘 要 】

This project is investigating the chemical processes that govern actinide sequestration in grout materials with the goal of determining the long-term behavior of grouts used to stabilize actinides in source-terms such as high level waste tank heals. Two grouts contained portland cement, blast furnace slag and fly ash, with one formulation containing zeolite and the other fluorapatite. Earlier experimental work was conducted with funds from DOE/West Valley. CEMS funding allowed further exploration of grout behavior, beyond the scope of the original work which consisted of both batch and flow-through column experiments. The primary focus was the late stage behavior of actinides in the grout system when it is expected to be open to the atmosphere and groundwater, resulting in decreases of pH and interactions of U (and other elements) with dissolved carbonate.