Journal ArticleDOI
Occurrence and Constitution of Natural and Synthetic Ferrihydrite, a Widespread Iron Oxyhydroxide
John L. Jambor,John E. Dutrizac +1 more
TLDR
Effects of Various Ions on the Aqueous Transformation of Ferrihydrite and Environmental Implications 2576.Abstract:
VII. Synthesis 2569 VIII. Adsorption and Solid Solution 2570 A. General Observations 2570 B. Adsorption of Specific Species 2571 1. Various Cations 2571 2. Various Anions 2572 3. Organic Species 2573 C. Environmental Implications 2573 IX. Transformation of Ferrihydrite 2574 A. Dry Thermal Transformation 2574 B. Aqueous Transformation 2575 C. Effects of Various Ions on the Aqueous Transformation of Ferrihydrite 2576read more
Citations
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Journal ArticleDOI
The Structure of Ferrihydrite, a Nanocrystalline Material
F. Marc Michel,Lars Ehm,Sytle M. Antao,Peter L. Lee,Peter J. Chupas,Gang Liu,Daniel R. Strongin,Martin A.A. Schoonen,Brian L. Phillips,John B. Parise +9 more
TL;DR: Real-space fitting indicates structural relaxation with decreasing particle size and also suggests that second-order effects such as internal strain, stacking faults, and particle shape contribute to the PDFs.
Journal ArticleDOI
Iron and Aluminum Hydroxysulfates from Acid Sulfate Waters
J. M. Bigham,D. Kirk Nordstrom +1 more
TL;DR: In this paper, the formation, properties, fate, and environmental implications of nano-to microphase hydroxy-sulfates of Fe and Al that are precipitated from acid sulfate waters are described.
Journal ArticleDOI
Environmental magnetism: Principles and applications
Qingsong Liu,Andrew P. Roberts,Juan C. Larrasoaña,Subir K. Banerjee,Yohan Guyodo,Lisa Tauxe,Frank Oldfield +6 more
TL;DR: In this article, a review of magnetic properties and the environmental processes that give rise to the measured magnetic signal is presented, and the power of environmental magnetism in enabling quantitative environmental interpretations is discussed.
Book ChapterDOI
The geochemistry of acid mine drainage
David W. Blowes,Carol J. Ptacek,John L. Jambor,Christopher G. Weisener,Dogan Paktunc,W.D. Gould,D.B. Johnson +6 more
TL;DR: In this article, the authors developed and applied molecular tools to determine the activity and role of microorganisms in sulfide-mineral-bearing systems and developed tools for assessing the toxicity of mine-waste effluent.
Journal ArticleDOI
Iron oxide chemistry. From molecular clusters to extended solid networks
TL;DR: The formation of molecular clusters or nanosized solid phases is interpreted with illustrative mechanisms building a bridge between solution chemistry and solid state chemistry.
References
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Journal ArticleDOI
Iron Oxide Removal from Soils and Clays by a Dithionite-Citrate System Buffered with Sodium Bicarbonate
TL;DR: In this article, the bicarbonate-buffered Na2S2O4-citrate system was used for removing free iron oxides from latosolic soils, and the least destructive of iron silicate clays.
Journal ArticleDOI
Uranium solution-mineral equilibria at low temperatures with applications to sedimentary ore deposits
TL;DR: The Gibbs free energies, enthalpies and entropies of 42 dissolved uranium species and 30 uranium-bearing solid phases have been critically evaluated from the literature and estimated when necessary for 25°C.
Journal ArticleDOI
Differenzierung der Eisenoxide des Bodens durch Extraktion mit Ammoniumoxalat‐Lösung
Journal ArticleDOI
Adsorption of arsenite and arsenate on amorphous iron hydroxide
TL;DR: In this paper, the authors measured the adsorption isotherms in solutions with ionic strengths of 0.01 at 25°C and measured over the arsenite and arsenate concentration range 10−7−10−3 M and the pH range 4−10.
Journal ArticleDOI
Surface chemistry of ferrihydrite: Part 1. EXAFS studies of the geometry of coprecipitated and adsorbed arsenate
TL;DR: In this article, the As and Fe K-edges were collected from samples of two-line ferrihydrite with adsorbed (ADS) and coprecipitated (CPT) arsenate prepared over a range of conditions and arsenate surface coverages.