scholarly journals Thrust wedges and fluid overpressures: Sandbox models involving pore fluids

2006 ◽  
Vol 111 (B5) ◽  
pp. n/a-n/a ◽  
Author(s):  
R. Mourgues ◽  
P. R. Cobbold
Keyword(s):  
Pore Fluids ◽  
Fluid Overpressures

Pore structure evolution in silica gel during aging/drying II. Effect of pore fluids

1992 ◽  
Vol 142 ◽  
pp. 197-207 ◽  
Author(s):  
Pamela J. Davis ◽  
C. Jeffrey Brinker ◽  
Douglas M. Smith ◽  
Roger A. Assink
Keyword(s):  
Pore Structure ◽  
Silica Gel ◽  
Structure Evolution ◽  
Pore Fluids

Mobility of Chelated Radionuclides in Engineered Concrete Barriers

1992 ◽  
Vol 294 ◽  
Author(s):  
Craig A. Dicke ◽  
Robert W. Smith
Keyword(s):  
Citric Acid ◽  
Chelating Agents ◽  
Ethylenediaminetetraacetic Acid ◽  
Cobalt Complexes ◽  
Alkaline Ph ◽  
Pore Fluids ◽  
Concrete Barriers ◽  
Equilibrium Speciation ◽  
Low Level Radioactive Waste

ABSTRACTConcrete is a major component in many low-level radioactive waste (LLW) disposal facilities. The use of concrete is widespread because of its physical and structural properties and because it provides geochemical control on metal and radionuclide releases. Organic compounds are often disposed with radionuclides in LLW disposal facilities. Interactions between radionuclides and chelating agents must be evaluated to estimate mobility of radionuclides in concrete vaults. This paper quantifies the effects of two common organic components [citric acid and ethylenediaminetetraacetic acid (EDTA)] on radionuclide mobility in concrete barriers by using equilibrium geochemical calculations.Equilibrium speciation calculations indicate that some radionuclides are chelated in groundwater (pH 7) but are destabilized in the highly alkaline (pH 13) concrete pore fluids. Radionuclides complexed by EDTA and citrate are replaced by calcium in the concrete pore fluids. In addition, the citrate nuclide complex reacts to form uncomplexed citrate in concrete pore fluids. The chemical performance of concrete LLW disposal facilities should not be compromised by small amounts of chelating agents disposed with some radionuclides. However, EDTA may form significant nickel and cobalt complexes above the pH important in the long-term service life of concrete barriers.

scholarly journals Data report: 87Sr/86Sr in pore fluids from IODP Expedition 355 Arabian Sea Monsoon

2017 ◽  
Author(s):  
S.C. Carter ◽  
E.M. Griffith ◽  
H.D. Scher ◽  
Keyword(s):  
Arabian Sea ◽  
Pore Fluids
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