PERFORMANCE REPORT A LEACHABILITY
Direct comparisons between (a) Fluid Tech solidification/stabilization systems, and (b) other systems are difficult to make. Variations in waste types, and within individual waste streams, as well as in liquid loading levels, leachant dissimilarities, and lack of specific isotope release rate information all make direct comparisons difficult to find. Using available information, FTI solidified wastes generally demonstrate leach rates 2 orders of magnitude lower than another generally known system (Cement). In the table following, each whole number (Leachability Index) represents 1 order of magnitude in release of pollutant. Higher values of LI represent lower pollutant release during leaching. Average Leachability Indices are calculated from diffusion coefficients. There were 11 leach periods, covering a total of one year.
|
FLUID TECH Product |
LEACHANT |
Sr-85 |
LEACHABILITY Cs-137 |
INDEX Co-60 |
Ave. |
| Aquaset | #1 Dist. water | 8.8 | 9.3 | 9.6 | 9.2 |
| Aquaset | #2 pH 2.3 | 7.3 | 10.0 | 8.8 | 8.7 |
| Aquaset | #3 pH 5.7 | 8.7 | 10.3 | 9.9 | 9.6 |
| Aquaset | #4 pH 9.5 | 8.9 | 9.7 | 10.0 | 9.5 |
| Aquaset | #5 Seawater | 6.9 | 9.5 | 9.8 | 8.7 |
| Aquaset II | #1 Dist. water | 8.1 | 6.4 | 9.0 | 7.8 |
|
Aquaset II
|
#2 pH 2.3 | 8.1 | 6.6 | 9.3 | 8.0 |
|
Aquaset II
|
#3 pH 5.7 | 8.5 | 6.7 | 9.0 | 8.1 |
| Aquaset II | #4 pH 9.5 | 8.6 | 6.4 | 9.8 | 8.3 |
| Aquaset II | #5 Seawater | 7.9 | 6.7 | 9.5 | 8.0 |
| Petroset | #1 Dist. water | 9.1 | 9.4 | 9.5 | 9.3 |
| Petroset | #2 pH 2.3 | 7.3 | 9.0 | 8.4 | 8.2 |
|
Petroset
|
#3 pH 5.7 | 8.7 | 9.7 | 9.5 | 9.3 |
|
Petroset
|
#4 pH 9.5 | 8.3 | 10.5 | 9.4 | 9.4 |
|
Petroset
|
#5 Seawater | 6.6 | 10.1 | 10.1 | 8.9 |
| Petroset II | #1 Dist. water | 8.6 | 9.4 | 9.6 | 9.2 |
|
Petroset II
|
#2 pH 2.3 | 9.1 | 9.5 | 9.9 | 9.5 |
| Petroset II | #3 pH 5.7 | 8.6 | 10.0 | 10.1 | 9.6 |
| Petroset II | #4 pH 9.5 | 8.7 | 9.9 | 9.7 | 9.4 |
| Petroset II | #5 Seawater | 9.6 | 10.3 | 10.1 | 10.0 |
|
|
Average: | 8.3 | 8.9 | 9.5 | 8.9 |
