selective uptake of caesium by mordenite enclosing amp … · 2012-05-24 · [mmol/g] 0.22 0.010...
TRANSCRIPT
SELECTIVE UPTAKE OF CAESIUM BY MORDENITE ENCLOSING AMP MICROCAPSULES
ACTINIDE AND FISSION PRODUCT PARTITIONING AND TRANSMUTATION, ISBN 978-92-64-99174-3, © OECD 2012 1
Selective uptake of caesium by mordenite enclosing AMP microcapsules
Abstract
SELECTIVE UPTAKE OF CAESIUM BY MORDENITE ENCLOSING AMP MICROCAPSULES
2 ACTINIDE AND FISSION PRODUCT PARTITIONING AND TRANSMUTATION, ISBN 978-92-64-99174-3, © OECD 2012
Introduction
Figure 1: Schematic diagram of AMP-M composites
CaCa Ca Ca CaCaCaCaCa CaCa CaCa CaCa
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
CaCa Ca Ca CaCaCaCaCa CaCa CaCa CaCa
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
AMP
Macropores of mordeniteCs+Cs+
Calcium alginate gel polymer
CaCa Ca Ca CaCaCaCaCa CaCa CaCa CaCa
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
CaCa Ca Ca CaCaCaCaCa CaCa CaCa CaCa
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
CaCa Ca Ca CaCaCaCaCa CaCa CaCa CaCa
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
CaCa Ca Ca CaCaCaCaCa CaCa CaCa CaCa
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Ca
Experimental
Materials and preparation procedure of AMP-M composites
SELECTIVE UPTAKE OF CAESIUM BY MORDENITE ENCLOSING AMP MICROCAPSULES
ACTINIDE AND FISSION PRODUCT PARTITIONING AND TRANSMUTATION, ISBN 978-92-64-99174-3, © OECD 2012 3
Surface morphology and structure of AMP-M composites
Determination of distribution coefficient
Column test
Results and discussion
Surface morphology and structure of AMP-M composites
SELECTIVE UPTAKE OF CAESIUM BY MORDENITE ENCLOSING AMP MICROCAPSULES
4 ACTINIDE AND FISSION PRODUCT PARTITIONING AND TRANSMUTATION, ISBN 978-92-64-99174-3, © OECD 2012
Figure 2: Apparatus for column experiments
Tubing pump
FeedWater
Thermo-
controller
Circulation pump
P
P
Column
Fraction Collector
Figure 3: SEM images of AMP-M1
(a) AMP-M1 (b) Magnification image
Figure 4: Mapping of Cs, Mo and P in AMP-M3
500 m 5500 mm
SELECTIVE UPTAKE OF CAESIUM BY MORDENITE ENCLOSING AMP MICROCAPSULES
ACTINIDE AND FISSION PRODUCT PARTITIONING AND TRANSMUTATION, ISBN 978-92-64-99174-3, © OECD 2012 5
Figure 5: XRD pattern of adsorbents
:AMP:AMP:AMP
Mordenite
AMP-M3
AMP-M2
AMP-M1
Inte
nsi
ty [
a.u
.]
2 [deg]
Table 1: Lattice constants (Å) of AMP crystals in AMP-M
AMP-M1 11.6210.005
AMP-M2 11.6300.006
AMP-M3 11.6360.013
Original fine crystals of AMP 11.6550.000
Uptake rate of Cs+ for AMP-M composites
Figure 6: Uptake rate of Cs+
V/m = 100 cm3/g; 251C
Mordenite
AMP-M3
AMP-M2
AMP-M1Mordenite
AMP-M3
AMP-M2
AMP-M1
Up
tak
e [%
]
Time [h]
SELECTIVE UPTAKE OF CAESIUM BY MORDENITE ENCLOSING AMP MICROCAPSULES
6 ACTINIDE AND FISSION PRODUCT PARTITIONING AND TRANSMUTATION, ISBN 978-92-64-99174-3, © OECD 2012
Effect of HNO3 concentration on Kd of Cs+ for AMP-M composites
−
Figure 7: Effects of HNO3 concentration on Kd,Cs
V/m = 100 cm3/g; [Cs
+]: 10 ppm; 251C
Mordenite
AMP-M3
AMP-M2
AMP-M1
Mordenite
AMP-M3
AMP-M2
AMP-M1
HNO3 [M]
Kd
[cm
3g
-1]
Figure 8: Kd of different metal ions for AMP-M1
V/m = 100 cm3/g; [M
n+]: 10 ppm; 251C
Cs
Rb
Ag
Cs
Rb
Ag
※AMP-M1
HNO3 [M]
Kd
[cm
3g
-1]
SELECTIVE UPTAKE OF CAESIUM BY MORDENITE ENCLOSING AMP MICROCAPSULES
ACTINIDE AND FISSION PRODUCT PARTITIONING AND TRANSMUTATION, ISBN 978-92-64-99174-3, © OECD 2012 7
Uptake isotherm of Cs+ for AMP-M composites
Figure 9: Uptake isotherm of Cs+ on AMP-M1
V/m = 100 cm3/g; 251C
Qeq
[mm
ol/
g]
Ceq [mmol/dm3]
AMP-M1AMP-M1
Figure 10: Langmuir-plot
Ceq [mmol/dm3]
Ceq
/Qeq
[g/d
m3]
AMP-M1AMP-M1
SELECTIVE UPTAKE OF CAESIUM BY MORDENITE ENCLOSING AMP MICROCAPSULES
8 ACTINIDE AND FISSION PRODUCT PARTITIONING AND TRANSMUTATION, ISBN 978-92-64-99174-3, © OECD 2012
Table 2: Qmax values of adsorbents
Adsorbent Mordenite AMP-M1 AMP-M2 AMP-M3
Qmax [mmol/g] 0.220.010 0.240.008 0.210.021 0.210.009
Breakthrough and elution properties of Cs+ through AMP-M1 column
Figure 11: Breakthrough and elution curves of Cs+ for AMP-M1 column
Column: 0.5 cm 20 cm, AMP-M1: 2 g; flow rate: 0.22 cm3/min; 251C
(a) Feed solution [Cs+] = 1 000 ppm; (b) loaded amount of Cs
+: 0.34 mmol; eluent: 5 M NH4NO3
(a) Breakthrough curve (b) Elution curve
C/C
0
Effluent volume [cm3]
C/C
0
Effluent volume [cm3]
Elu
ted
[%
]
Elution volume [cm3]
Conclusions
−
SELECTIVE UPTAKE OF CAESIUM BY MORDENITE ENCLOSING AMP MICROCAPSULES
ACTINIDE AND FISSION PRODUCT PARTITIONING AND TRANSMUTATION, ISBN 978-92-64-99174-3, © OECD 2012 9
References