Chemistry Reference
In-Depth Information
Dissolved
sludge waste
3.0 M HNO
3
0.1 M H
2
C
2
O
4
0.15 M Fe(NO
3
)
3
0.0005 M Sm(NO
3
)
3
(16)
Carbonate
wash
0.25 M Na
2
CO
3
(6)
Strip
scrub
0.01 M HNO
3
(8)
Strip
1.0 M THFTCA
(4)
Scrub 1
2.0 M Al(NO
3
)
3
(2)
Scrub 2
0.04 M HNO
3
(6)
Combined
process
solvent (12)
1
2
3
4
5
6
7
8
9
11
12
14
15
19
20
10
13
16
17
18
Organic
effluent
(12)
Aqueous
raffinate
(24)
Strip effluent
(Sr, Am, Np, Pu, Bi)
(12)
Carbonate
effluent
(Tc, U)
(8)
FIGURe 6.7
The lowsheet of a combined crown ether-carbamoylmethylphosphine oxide process. (From Horwitz, E.P., Dietz, M.L., Diamond, H.,
Rogers, R.D., Leonard, R.A.,
Chemical Pretreatment of Nuclear Waste for Disposal
, Plenum Press, New York, 1994. With permission.)
