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WSRC-TR-2000-00413
November 20, 2000
Rev. 0
MATERIALS AND METHODS3
Researchers at ORNL prepared the four different solvents used in these tests. All of these
solvents employ calix[4]arene-bis(t-octylbenzo-crown-6) (BOBCalixC6) as the extractant.
Other components of the solvent included the modifier, trioctylamine as a suppressor and a
diluent. Table 1 lists the other components present in these four solvents. Figure 1
provides additional detail pertaining to each of the key solvent componenets.
rO1
Cesium Extractant _
- Synthetically attractive
- Soluble in aliphatic diluents J
- Rejects sodium
- Effective at 0.01 M Calix[4]arene-bis( t-octylbenzo-crown-6)
- Stable to alkaline simulant "BOBCaIixC6"
Diluent Modifiers R'
- Soluble in aliphatic diluents R- O OH
- Increase Cs extraction
- Effective at 0.20-0.50 M
- Prevent third phase formation
- 2nd Generation possess excellent 2nd Generation Modifiers
stability to warm caustic
Suppressor
" Suppresses impurity effects
" Suppresses ion-pair dissociation
" Effective at <0.001 M
" Improves and stabilizes stripping Trioctylamine
"TOA"
FIGURE 1. KEY SOLvENT COMPONENTS
Table 1, solvents employed
ORNL solvent batch ID Modifier employed Diluent employed
PVB B000718-110W Cs-7SB Isopar L
PVB B000718-107W Cs-7SBT Isopar L
PVB B000718-108W Cs-6 Isopar L
PVB B000718-109W Cs-6 Norpar 12
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Peterson, R.A. Solvent Extraction External Radiation Stability Testing, report, January 5, 2001; South Carolina. (https://digital.library.unt.edu/ark:/67531/metadc715382/m1/4/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.