ChemInform Abstract: EFFECT OF IRON ON WASTE-GLASS LEACHING

1983 ◽  
Vol 14 (22) ◽  
Author(s):  
G. L. MCVAY ◽  
C. Q. BUCKWALTER
Keyword(s):  
1983 ◽  
Vol 62 (2) ◽  
pp. 151-158 ◽  
Author(s):  
L. R. Pederson ◽  
C. Q. Buckwalter ◽  
G. L. McVay

1985 ◽  
Vol 50 ◽  
Author(s):  
K. Ishiguro ◽  
N. Sasaki ◽  
H. Kashihara ◽  
M. Yamamoto

AbstractExtensive studies have been made on the interactions between a waste glass and repository materials under static conditions. One of the PNC reference glasses was leached in the solution prepared from water in contact with crushed granite, tuff, diabase and backfill materials such as bentonite and zeolite. The leachant solutions except for some bentonite solutions reduced the glass leach rate compared with that measured in distilled water. The extent of the reduction was a function of silicon concentration in solution. The bentonite solutions enhanced the glass dissolution rate by a factor of 2 to 3 at low bentonite/water ratios but the effect was found to be less important at high bentonite/water ratios and in the long-term experiment. Addition of granite and zeolite to the bentonite solutions decreased the leach rate below the value measured in distilled water.


1986 ◽  
Vol 84 ◽  
Author(s):  
Bruce C. Bunker

AbstractNuclear waste glass leaching has been studied extensively during the past ten years. Although much has been learned concerning the kinetics and mechanisms of glass dissolution, it does not appear that accurate predictions can yet be made concerning the release kinetics for specific elements from a given glass as a function of environmental conditions. In order to reliably predict elemental release rates, one needs to know: 1) how a given element is incorporated into the glass structure, 2) how specific sites in the glass react with water, 3) how the composition and reactivity of the leachate influence glass reactivity, 4) how the structure and reactivity of the glass changes in surface alteration layers, and 5) how glass dissolution modifies the chemistry of the leachate. At our current level of understanding, we are only able to make qualitative predictions concerning each of the above factors which allow us to make “order of magnitude” or “upper limit” predictions for radionuclide release rates.


1983 ◽  
Vol 66 (3) ◽  
pp. 170-174 ◽  
Author(s):  
GARY L. McVAY ◽  
CHARLES Q. BUCKWALTER
Keyword(s):  

2008 ◽  
Author(s):  
Sergey Stefanovsky ◽  
Alexander Barinov ◽  
Galina Varlakova ◽  
Irene Startseva ◽  
Michael I. Ojovan

2002 ◽  
Vol 86 (6) ◽  
pp. 12-21 ◽  
Author(s):  
Ahmad Shayan
Keyword(s):  

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