Abstract
The near field of the proposed UK repository for ILW/LLW will contain containers of conditioned waste in contact with a cementious backfill. It will contain significant quantities of iron and steel, Magnox and Zircaloy. Colloids deriving from their corrosion products may possess significant sorption capacity for radioelements. If the colloids are mobile in the groundwater flow, they could act as a significant vector for activity transport into the far field. The desorption of plutonium and americium from colloidal corrosion products of iron and zirconium has been studied under chemical conditions representing the transition from the near field to the far field. Desorption R{sub d} values of {>=} 5 x 10{sup 6} ml g{sup -1} were measured for both actinides on these oxides and hydroxides when actinide sorption took place under the near-field conditions and desorption took place under the far-field conditions. Desorption of the actinides occurred slowly from the colloids under far-field conditions when the colloids had low loadings of actinide and more quickly at high loadings of actinide. Desorbed actinide was lost to the walls of the experimental vessel. (author).
Citation Formats
Gardiner, M P, Smith, A J, and Williams, S J.
The effect of corrosion product colloids on actinide transport.
United Kingdom: N. p.,
1992.
Web.
Gardiner, M P, Smith, A J, & Williams, S J.
The effect of corrosion product colloids on actinide transport.
United Kingdom.
Gardiner, M P, Smith, A J, and Williams, S J.
1992.
"The effect of corrosion product colloids on actinide transport."
United Kingdom.
@misc{etde_10135560,
title = {The effect of corrosion product colloids on actinide transport}
author = {Gardiner, M P, Smith, A J, and Williams, S J}
abstractNote = {The near field of the proposed UK repository for ILW/LLW will contain containers of conditioned waste in contact with a cementious backfill. It will contain significant quantities of iron and steel, Magnox and Zircaloy. Colloids deriving from their corrosion products may possess significant sorption capacity for radioelements. If the colloids are mobile in the groundwater flow, they could act as a significant vector for activity transport into the far field. The desorption of plutonium and americium from colloidal corrosion products of iron and zirconium has been studied under chemical conditions representing the transition from the near field to the far field. Desorption R{sub d} values of {>=} 5 x 10{sup 6} ml g{sup -1} were measured for both actinides on these oxides and hydroxides when actinide sorption took place under the near-field conditions and desorption took place under the far-field conditions. Desorption of the actinides occurred slowly from the colloids under far-field conditions when the colloids had low loadings of actinide and more quickly at high loadings of actinide. Desorbed actinide was lost to the walls of the experimental vessel. (author).}
place = {United Kingdom}
year = {1992}
month = {Dec}
}
title = {The effect of corrosion product colloids on actinide transport}
author = {Gardiner, M P, Smith, A J, and Williams, S J}
abstractNote = {The near field of the proposed UK repository for ILW/LLW will contain containers of conditioned waste in contact with a cementious backfill. It will contain significant quantities of iron and steel, Magnox and Zircaloy. Colloids deriving from their corrosion products may possess significant sorption capacity for radioelements. If the colloids are mobile in the groundwater flow, they could act as a significant vector for activity transport into the far field. The desorption of plutonium and americium from colloidal corrosion products of iron and zirconium has been studied under chemical conditions representing the transition from the near field to the far field. Desorption R{sub d} values of {>=} 5 x 10{sup 6} ml g{sup -1} were measured for both actinides on these oxides and hydroxides when actinide sorption took place under the near-field conditions and desorption took place under the far-field conditions. Desorption of the actinides occurred slowly from the colloids under far-field conditions when the colloids had low loadings of actinide and more quickly at high loadings of actinide. Desorbed actinide was lost to the walls of the experimental vessel. (author).}
place = {United Kingdom}
year = {1992}
month = {Dec}
}