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El. knyga: Adsorption of Metals by Geomedia II: Variables, Mechanisms, and Model Applications

Edited by (U.S. Geological Survey, Menlo Park, CA, USA), Edited by (Auburn University, AL, USA)
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Adsorption of Metals by Geomedia II serves as a needed resource for this topic which has received much attention during the past 25 years. The book provides an in-depth review of the field, followed by numerous chapters that document the current status of adsorption research for a variety of metals by geomedia ranging from individual minerals to sediments and soils. Adsorption mechanisms are detailed and precipitation is presented as a distinct sorption process. Virtually all factors affecting the extent of metal adsorption are examined, including the effects of selected anions, competition among metals, pH, metal concentration, loading, variable metal adsorption capacity, ionic strength, hydrogen exchange and stoichiometry, and solids concentration. A variety of adsorption models are briefly presented and some are used to extend laboratory studies to field sites.

This is a compilation of 25 peer reviewed papers from among the 60+ platform and poster presentations of the symposium "Adsorption of Metals to Geomedia II" at the American Chemical Society (ACS) Meeting, March 27-29, 2006 in Atlanta, Georgia, USA. This symposium is a follow-up to the original held in 1996.

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Compilation of papers from the "Adsorption of Metals to Geomedia II" symposium at the American Chemical Society Meeting, March 27-29, 2006
Foreword xi
Surface Structure and Reactivity of Iron Oxide--Water Interfaces
1(30)
Ghose, S. K.
S. C. Petitto
K. S. Tanwar
C. S. Lo
P. J. Eng
A. M. Chaka
T. P. Trainor
Introduction
2(2)
Surface X-ray Diffraction Method: Crystal Truncation Rod (CTR) Technique
4(5)
Examples of Structural Models of Different Iron Oxide Interfaces
9(12)
Perspectives and Applications to Surface Reactivity
21(2)
Summary
23(8)
References
24(7)
Anion Sorption Topology on Hematite: Comparison of Arsenate and Silicate
31(36)
Waychunas, G. A.
Y.-S. Jun
P. J. Eng
S. K. Ghose
T. P. Trainor
Introduction
32(1)
Arsenate Crystal Chemistry in Minerals and on Surfaces
33(5)
Silicate Crystal Chemistry as a Monomer and Small Polymer in Structures and on Surfaces
38(6)
Structure of the Hematite Surface
44(2)
Results
46(10)
Discussion
56(3)
Prospects for Further Studies
59(2)
Conclusions
61(6)
References
62(5)
Molecular Structure of Lead(II) Coprecipitated with Iron(III) Oxyhydroxide
67(28)
Kelly, S. D.
P. Lu
T. Bolin
S. Chattopadhyay
M. G. Newville
T. Shibata
C. Zhu
Introduction
68(2)
Experimental
70(2)
Experimental Results
72(3)
X-ray Absorption Modeling
75(9)
Discussion and Conclusions
84(11)
References
91(4)
Tracking the Interaction of Transition Metal Ions with Environmental Interfaces using Second Harmonic Generation
95(30)
Konek, C. T.
M. J. Musorrafiti
A. B. Voges
F. M. Geiger
Introduction
95(2)
Experimental
97(2)
Surface Characterization
99(6)
Results
105(6)
Ion Binding
111(7)
Environmental Implications and Summary
118(7)
References
120(5)
Prions, Metals, and Soils
125(28)
Charlet, L.
Y. Chapron
G. Roman-Ross
C. Hureau
D. P. Hawkins
K. V. Ragnarsdottir
Introduction
126(4)
Geochemistry of Hotspots
130(6)
The Double Nature of the Prion Protein
136(3)
Prion Sorption and Transformation on Clays
139(6)
Horizontal Infectivity
145(1)
Conclusions
146(7)
References
146(7)
Associations between Iron Oxyhydroxide Nanoparticle Growth and Metal Adsorption/Structural Incorporation
153(34)
Kim, C. S.
C. J. Lentini
G. A. Waychunas
Introduction
154(2)
Experimental
156(5)
Results
161(14)
Discussion
175(4)
Conclusions
179(8)
References
181(6)
Temperature and Aging Effects on the Surface Speciation of Cd(II) at the Goethite--Water Interface
187(18)
Grafe, M.
G. Mustafa
B. Singh
R. S. Kookana
Introduction
188(4)
Experimental
192(2)
Results
194(3)
Discussion
197(3)
Conclusions
200(5)
References
201(4)
Cadmium and Lead Desorption from Kaolinite
205(30)
Srivastava, P.
M. Grafe
B. Singh
M. Balasubramanian
Introduction
205(3)
Experimental
208(5)
Results
213(12)
Discussion
225(3)
Conclusions
228(7)
References
229(6)
Mechanism of Molybdenum Adsorption on Soils and Soil Minerals Evaluated Using Vibrational Spectroscopy and Surface Complexation Modeling
235(32)
Goldberg, S.
C. T. Johnston
D. L. Suarez
S. M. Lesch
Introduction
236(3)
Experimental
239(5)
Results and Discussion
244(17)
Conclusions
261(6)
References
262(5)
Blind Prediction and Parameter Uncertainty -- A Sorption Test Case
267(26)
Richter, A.
V. Brendler
Introduction
267(4)
Methodology
271(3)
Modeling
274(8)
Results and Discussion
282(5)
Summary and Conclusions
287(6)
References
288(5)
Biogeochemical Uranium Redox Transformations: Potential Oxidants of Uraninite
293(28)
Ginder-Vogel, M.
S. Fendorf
Introduction
294(1)
Uranium Oxidation--Reduction Reactions
294(4)
Experimental
298(5)
Results
303(4)
Discussion
307(3)
Implications for Biogeochemical Uranium Cycling
310(11)
References
313(8)
Phosphate Interactions with Iron (Hydr)oxides: Mineralization Pathways and Phosphorus Retention upon Bioreduction
321(28)
Borch, T.
S. Fendorf
Introduction
322(3)
Experimental
325(3)
Results
328(8)
Discussion
336(5)
Conclusion and Implications
341(8)
References
342(7)
Influence of Phosphate on Adsorption and Surface Precipitation of Lead on Iron Oxide Surfaces
349(26)
Xie, L.
D. E. Giammar
Introduction
350(2)
Experimental
352(9)
Results and Discussion
361(9)
Summary
370(5)
References
371(4)
Uranium(VI) Release from Contaminated Vadose Zone Sediments: Estimation of Potential Contributions from Dissolution and Desorption
375(42)
Bond, D. L.
J. A. Davis
J. M. Zachara
Introduction
376(3)
Experimental
379(9)
Results
388(21)
Discussion
409(3)
Concluding Remarks
412(5)
References
413(4)
Arsenic Speciation in Solid Phases of Geothermal Fields
417(24)
Alsina, M. A.
I. Saratovsky
J.-F. Gaillard
P. A. Pasten
Introduction
418(1)
Arsenic in Geothermal Systems
419(4)
Qualitative and Quantitative Characterization of Hot Spring Deposits
423(4)
XAS Analysis of Arsenic Solid-Phase Speciation in Hot Springs
427(7)
Concluding Remarks
434(7)
References
435(6)
Reactive Transport and Residence Times in Unsaturated Fractured Rocks from Field-Scale Experiments
441(28)
Pili, E.
S. Bureau
F. Perrier
D. Patriarche
L. Charlet
P. M. Adler
P. Richon
Introduction
442(1)
Setting
443(3)
Experimental Setup, Tracer Introduction and Recovery
446(9)
Reactive Transport
455(6)
Tracer Transport
461(3)
Fracture Networks and Flow Simulations
464(1)
Conclusions
465(4)
References
467(2)
Subject Index 469
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