UNDERSTANDING VARIATION IN PARTITION COEFFICIENT, Kd ...

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concentrations of humic acid, there is a change from enhanced U(VI) adsorption at low pH to reduced adsorption at high pH for the pH range from 4.3 to 6.4. Tsunashima et al. (1981) investigated the sorption of U(VI) by Wyoming montmorillonite. The experiments consisted of reacting, at room temperature, the
pH Table J.5. Uranium K d values selected from literature for development of look-up table. U <strong>Kd</strong> (ml/g) Clay Cont. (wt.%) CEC (meq/100g) Surface Area (m 2 /g) Solution Soil Identification Reference / Comments 8.3 1.98 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 40%) 8.3 0.49 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 40%) 8.3 2.81 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 38%) 8.3 0.62 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 22%) 8.3 0.45 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 30%) 8.3 0.54 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 23%) 8.3 0.62 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 25%) 8.3 0.40 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 17%) 8.3 0.10 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 7%) 8.3 0.08 Hanford Groundwater Trench 8 Loamy Sand Kaplan and Serne (1995, Part. Sat. Column, 7%) 8.3 2.0 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, Saturated Column 1) 8.3 0.5 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, Saturated Column 1) 8.3 2.7 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, Saturated Column 1) 8.3 1.0 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, Unsat. Column 1, 65%) 8.3 0.5 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, Unsat. UFA 1, 70%) 8.3 0.2 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, Unsat. UFA 2, 24%) 8.3 1.1 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, U nsat. Column 1, 63%) 8.3 1.1 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, Unsat. Column 2, 43%) 8.3 0.6 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, Unsat. UFA 1A, 29%) 8.3 0.6 5.2 Hanford Groundwater Trench 8 Loamy Sand Lindenmeir et al. (1995, Unsat. UFA 1C, 29%) J.29
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United States Office of Air and Rad
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NOTICE The following two-volume rep
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This publication is the result of a
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TO COMMENT ON THIS GUIDE OR PROVIDE
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CONTENTS NOTICE ...................
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Concentrations Extractable Iron Con
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Appendix A - Acronyms and Abbreviat
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Figure E.1. Variation of K d for Cr
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Table 5.16. Uranium(VI) aqueous spe
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Table H.3. Simple and multiple regr
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1.0 Introduction The objective of t
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discussed. The geochemical modeling
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2.0 The K d Model The simplest and
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track many more parameters and some
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of interest. The retardation factor
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(e.g., soil). An increasing body of
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complexation constants for the cont
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the soil column. Additionally, the
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Element Table 5.2. Concentrations o
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5.2.3 Aqueous Speciation Cadmium fo
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5.2.4 Dissolution/Precipitation/Cop
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cadmium, indicating that cadmium an
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5.2.6.2.2 Limits of K d Values with
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organic chelates (e.g., EDTA). Init
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(tarapacaite) in chromium sludge fr
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K d). Soils containing Mn oxides ox
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Table 5.7. Estimated range of Kd va
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most common valence state of lead e
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Table 5.8. Lead aqueous species inc
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Under reducing conditions, galena (
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C Adsorption of lead increases with
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(Choppin, 1983). Plutonium hydrolyt
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Table 5.10. Plutonium aqueous speci
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5.6.5 Sorption/Desorption Plutonium
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content in the system. Additionally
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much greater concentrations. Thus,
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exchanged which they attributed to
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up tables was based in part on thei
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organic complexes likely predominat
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Thorium undergoes hydrolysis in aqu
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The distribution of thorium aqueous
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from about 10 -8.5 mol/l (0.0007 mg
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Based on the assumptions and limita
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5.10 Tritium Geochemistry And K d V
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uranium. Uranium(VI) species domina
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gives 0.1 to 10 µg/l as the range
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mineral in reducing ore zones (Fron
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Percent Distribution 100 80 60 40 2
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5.11.6 Partition Coefficient, K d ,
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No attempt was made to statisticall
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Table 5.18. Selected chemical and t
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Another objective of this report is
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6.0 REFERENCES Adriano, D. C. 1992.
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Bensen, D. W. 1960. Review of Soil
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Metals by Geomedia. Variables, Mech
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EPA (U.S. Environmental Protection
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Griffin, R. A., A. K. Au, and R. R.
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+ Keeney-Kennicutt, W. L., and J. W
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Mattigod, S. V., A. L. Page, and I.
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Oscarson, D. W., and H. B. Hume. 19
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Relyea, J. F. and D. A. Brown. 1978
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Schultz, R. K., R. Overstreet, and
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Szalay, A. 1964. “Cation Exchange
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Yariv, S., and H. Cross. 1979. Geoc
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APPENDIX A Acronyms, Abbreviations,
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PC Personal computers operating und
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A.3.0 List of Symbols and Notation
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APPENDIX B Definitions
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Clay Content - particle size fracti
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Polynuclear Species - an aqueous sp
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C.1.0 Background Appendix C Partiti
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Cadmium K d Table C.2. Correlation
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C.3.0 Data Set for Soils Table C.4
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Cd K d (ml/g) Clay Cont. (wt%) pH C
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D.1.0 Background Appendix D Partiti
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A second data set (see Section D.4)
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Table D.3. Correlation coefficients
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By transposing the CEC and cesium K
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Table D.6. Cesium K d values measur
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eported in Table D.8 are described
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a 1 b 1 Range of Solution Cs Concen
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Figure D.4. Generalized cesium Freu
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Table D.10. Estimated range of K d
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D.3.0 K d Data Set for Soils and Pu
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Cesium Kd (ml/g) Clay (wt.% ) Mica
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Cesium K d (ml/g) Clay (wt%) Mica (
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Bruggenwert, M. G. M., and A. Kamph
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Shiao, S. Y., P. Rafferty, R. E. Me
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E.1.0 Background Appendix E Partiti
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chromium-reductive soils may stem f
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E.2.0 Approach The approach used to
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Table E.3. Estimated range of K d v
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Table E.4. Data from Rai et al. (19
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E.4.0 References Davis, J. A. and J
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APPENDIX F Partition Coefficients F
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(CEC) of the soils. Such an anomaly
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Table F.1. Summary of K d values fo
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Figure F.2. Variation of K d as a f
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F.4.0 References Abd-Elfattah, A.,
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APPENDIX G Partition Coefficients F
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A number of investigators have exam
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pH value, which is typical of the m
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These significant reductions in ads
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This is typically accomplished by t
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The scatterplots are typically disp
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Table G.2. Regression models for pl
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G.4.0 References Barney, G. S. 1984
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Nelson, D. M., R. P. Larson, and W.
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APPENDIX H Partition Coefficients F
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1.6 ml/g for a measurement made on
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Figure H.1. Relation between stront
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Figure H.2. Relation between stront
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H.2.4 Approach Figure H.4. Relation
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A second look-up table (Table H.5)
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Sr K d (ml/g) Clay Content (%) pH C
Page 254 and 255: Sr K d (ml/g) Clay Content (%) pH C
Page 256 and 257: Sr K d (ml/g) Clay Conten t (%) pH
Page 264 and 265: Konishi, M., K. Yamamoto, T. Yanagi
Page 266 and 267: APPENDIX I Partition Coefficients F
Page 268 and 269: descriptive statistics of the thori
Page 270 and 271: Figure I.1. Linear regression betwe
Page 272 and 273: The look-up table (Table I.5) for t
Page 274 and 275: Thorium K d (ml/g) pH Clay (wt.%) C
Page 276 and 277: Rai, D., A. R. Felmy, D. A. Moore,
Page 278 and 279: J.1.0 Background Appendix J Partiti
Page 280 and 281: J.2.2 Uranium K d Studies on Soils
Page 282 and 283: Washington. The studies included an
Page 284 and 285: and then decreases with increasing
Page 286 and 287: Kd (ml/g) 100,000 10,000 1,000 100
Page 288 and 289: papers. Warnecke et al. (1984) indi
Page 290 and 291: Anderson et al. (1982) summarize an
Page 292 and 293: McKinley and Scholtis (1993) compar
Page 294 and 295: In a similar comparison of sorption
Page 296 and 297: J.3.1 K d Values as a Function ff p
Page 298 and 299: discussed, and one would have to ma
Page 300 and 301: al., 1992; and others). These refer
Page 302 and 303: · Manskaya et al. (1956) studied a
Page 306 and 307: pH U Kd (ml/g) Clay Cont. (wt.%) CE
Page 326 and 327: J.6.0 References Ames, L. L., J. E.
Page 328 and 329: Erikson, R. L., C. J. Hostetler, R.
Page 330 and 331: R. C. Ewing. Materials Research Soc
Page 332 and 333: Sheppard, M. I., and D. H. Thibault
Page 334: Yamamoto, T., E. Yunoki, M. Yamakaw
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UNDERSTANDING VARIATION IN PARTITION COEFFICIENT, Kd ...

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