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

Eggleston, Carrick M.

Department of Geology and Geophysics, University of Wyoming (United States)

关键词: Sediments;    Wastes;    54 Environmental Sciences;    Carbonates;    Chemistry;   

DOI  :  10.2172/833609
RP-ID  :  EMSP-70121--2003
RP-ID  :  FG07-99ER15024
RP-ID  :  833609

美国|英语

来源: UNT Digital Library

【 摘 要 】

Our component of this project focuses on the reaction of contaminant-containing fluids with carbonate mineral surfaces in order to better understand the dissolution-growth and related solid-solution processes that ultimately affect contaminant mobility in settings containing carbonates or carbonate grain coatings. Our collaborators (Stanford, PNNL) have focused on other aspects of carbonate and carbonate mineral surfaces as part of the overall project. Because some of the sediments through which contaminants leaking from the Hanford waste have carbonate grain coatings; better understanding the chemistry of carbonate-contaminant interaction constitutes fundamental chemistry needed in order to construct better models of contaminant transport through carbonate-containing sediments.