Influence of Calcium Carbonate Grain Coatings on Contaminant Reactivity in Vadose Zone Sediments.

Brown, G. E. ; Chambers, S. ; Eggleston, C. M. ; Zachara, J. M. ; Kendelewicz, T. ; Doyle, C. S.

Technical Information Center Oak Ridge Tennessee

关键词: Vadose zone;    Contaminants;    Calcium carbonates;    Radioactive wastes;    Hanford reservation;   

RP-ID  :  DE2004823363

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

This project investigated the role of calcium carbonate grain coatings on the reactivity of several key Hanford contaminants such as 60Co2+, 90Sr2+, 99TcO4 (CrO4)2-. Calcium carbonate in the Hanford subsurface is thought to play an important role in the fate of contaminant species released at the Hanford site. This project involves fundamental research into all aspects of Calcium carbonate coating formation and reactivity, with particular attention to the influence of calcium carbonate grain coatings in the reductive immobilization of chromate.