Sorption Equilibrium and Kinetics of NpO⁺₂ Uptake onto Illite

Artikel in diesem Heft

1. Masthead
2. PREFACE
3. CONTENTS
4. A. Chemistry of Actinides and Fission Products in Natural Aquatic Systems
5. A. 1. Solubilities and Dissolution Reactions
6. The Enthalpies of Solution of Lanthanide Metals in Hydrochloric Acid at Various Concentrations. Relevance to Nuclear Waste Long Term Storage
7. Solubility Product of Pu(OH)4(am)
8. A Thermodynamic Model for the Solubility of U02(am) in the Aqueous K⁺-Na⁺-HCO^-₃-CO^2-₃ -OH^--H₂O System
9. The Effect of Cement Additives on Radionuclide Solubilities
10. Comparison of the Leaching Behaviour of Irradiated Fuel, SIMFUEL, and Non-Irradiated U02 under Oxic Conditions
11. XPS Studies on the Leached Surface Layer of WAK-HLW Glass
12. Α. 2. Complexation with Inorganic and Organic Ligands
13. Thermodynamics of Cm(III) in Concentrated Electrolyte Solutions. Carbonate Complexation at Constant Ionic Strength (1 m NaCl)
14. Bicarbonate Complexes of Trivalent Actinides - Stable or Unstable?
15. Complex Formation between UO²⁺₂ and CO^2-₃: Studied by Laser-Induced Photoacoustic Spectroscopy (LIPAS)
16. Carbonate Complexation of Neptunyl(VI) Ion
17. Electrochemical Characterisation of the Ce(IV) Limiting Carbonate Complex
18. Complex Formation in the Ternary U(VI)-F-L System (L = Carbonate, Oxalate and Picolinate)
19. Complexation of Uranyl(VI) by Aqueous Orthosilicic Acid
20. Determination and Comparison of Uranyl Complexation Constants with Natural and Model Humic Acids
21. Complexation of Eu(III) with Humic Substances Fractionated by Coagulation
22. EXAFS Investigations of the Interaction of Humic Acids and Model Compounds with Uranyl Cations in Solid Complexes
23. Reduction of Np(VI) and Pu(VI) by Organic Chelating Agents
24. Stokes Relationship in Absorption and Fluorescence Spectra of U(VI) Species
25. Α. 3. Colloid Formation
26. Formation and Stability of Colloids under Simulated Near Field Conditions
27. Formation of Tc(IV) Colloids and Coagulation Processes
28. Α. 4. Experimental Methods
29. Laser Induced Photoacoustic Spectroscopy Applied to a Study on Colloid Formation Processes
30. Laser-Induced Photothermal Displacement Spectroscopy (LIPDS) for Speciation of Lanthanides and Actinides
31. Measurement of Hydrolysis Species of U(VI) by Time-Resolved Laser Induced Fluorescence Spectroscopy
32. CHEMLAB - in situ Diffusion Experiments Using Radioactive Tracers
33. Β. Geochemical Interactions and Transport Phenomena
34. B. 1. Diffusion and Migration in Geologic Media
35. Behaviour of Plutonium at the Surface and in a Geologic Environment
36. Mobility of U, Np, Pu, Am and Cm from Spent Nuclear Fuel into Bentonite Clay
37. Diffusion Behaviour of Se(-II) and Sm(III) in Compacted Sodium Bentonite
38. Diffusion of Some Radionuclides in Compacted Ca-Bentonite under Reducing Condition
39. Determination of the Diffusion Coefficient of Ionic Species in Boom Clay by Electromigration: Feasibility Study
40. Diffusion and Sorption of ³²Si-labelled Silica in the Boom Clay
41. Interactions of Cement Pore Fluids with Host Rock and the Effects on HTO, Na and Cs Diffusion
42. Migration Behavior of Eu(III) in Sandy Soil in the Presence of Dissolved Organic Materials
43. Β. 2. Sorption/Desorption Phenomena
44. A Study of the Surface Sorption Process of Cm(III) on Silica by Time-Resolved Laser Fluorescence Spectroscopy (I)
45. Structural Characterization of Sorption Complexes of Cm(III) at the Phosphate Minerals-Solution Interface Using Laser Spectrofluorimetry
46. Characterization of Eu(III) Species Sorbed on Silica and Montmorillonite by Laser-Induced Fluorescence Spectroscopy
47. Sorption of Europium on Illite (Silver Hill Montana)
48. Adsorption/Desorption of Lanthanides on Metal Oxides Interfaces
49. The Influence of Anionic Ligands on the Sorption Behaviour of Eu(III) on Natural Hematite
50. Sorption of Thorium onto Hematite Colloids
51. Sorption of NpO⁺₂ and Co²⁺ onto TiO₂
52. Sorption Equilibrium and Kinetics of NpO⁺₂ Uptake onto Illite
53. Sorption of Iodide, Cesium and Strontium on Organophilic Bentonite
54. Cesium Sorption Studies on Spanish Clay Materials*
55. Na, Ca and Sr Retardation on Crushed Crystalline Rock
56. Reactive Transport of Sr, Cs and Tc through a Column Packed with Fracture-filling Material
57. Soil-Solution Distribution Coefficients, K_d s, of I^- and IO^-₃ for 68 Japanese Soils
58. Surface Properties of Two Thorium Phosphate Compounds: Th4(P04)4P207 and Th3(P04)4; Comparison and Consequences for the Retention of Actinides
59. Influence of Physico-Chemical Forms of Radionuclides on their Migration in the Environment
60. Β. 3. Natural Analogue Studies
61. ³⁶Cl,¹²⁹I and Noble Gas Isotope Systematics in Groundwaters from the Lac du Bonnet Batholith, Manitoba, Canada
62. Distributions of Uranium-Series Radionuclides in Rock and Migration Rate of Uranium at the Koongarra Uranium Deposit, Australia
63. Isotopic Analyses by Using a Sensitive High Resolution Ion Micro-Probe (SHRIMP) for Natural Analogue Study of Oklo and Bangombé Natural Fission Reactors
64. ESR and CL Observed in Quartz Grains from Uranium Deposits: Implications for Uranium Migration in Natural Hydrogeological Environments
65. Uranium Micro-isotopic Analysis of Weathered Rock by a Sensitive High Resolution Ion Microprobe (SHRIMP II)
66. The Geochemical Behavior of Iodine-129 in Uranium Deposit
67. Β. 4. Effects of Biological Activities and Organic Materials
68. Role of Bacteria as Biocolloids in the Transport of Actinides from a Deep Underground Radioactive Waste Repository
69. An Examination of the Sorption Characteristics of ²⁴¹Am(III) and Eu(III) Bound by Humic Substances Chemically Immobilized on Silica Gel
70. Effects of Humic Acid on the Sorption of Eu(III) onto Kaolinite
71. Adsorption of Uranium on Clay and the Effect of Humic Substances
72. Mobility of the Dissolved Organic Matter through Intact Boom Clay Cores
73. Stability of ¹²⁵I and ¹⁴C Labelled Boom Clay Organic Matter
74. The Release of Organic Material from Clay Based Buffer Materials and its Potential Implications for Radionuclide Transport
75. Effects of Gluco-isosaccharinate on Cs, Ni, Pm and Th Sorption onto, and Diffusion into Cement
76. Probability of Production of Mobile Plutonium in Environments of Soil and Sediment
77. C. Data Base Development and Modelling
78. C. 1. Data Selection and Evaluation
79. An Approach to Validation of Solubility Databases for Performance Assessment
80. On Weak Complex Formation: Re-interpretation of Literature Data on the Np and Pu Nitrate Complexation
81. C. 2. Geochemical Models and Modelling
82. Geochemical Modelling of Repository Systems: Limitations of the Thermodynamic Approach
83. Use of the HARPROB Program to Evaluate the Effect of Parameter Uncertainty on Chemical Modelling Predictions
84. C. 3. Application of Models
85. A Quantitative Model for Ion Diffusion in Compacted Bentonite
86. Mathematical Modelling of the Effects of Aerobic and Anaerobic Chelate Biodegradation on Actinide Speciation
87. Author Index