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Clays and Clay Minerals

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Clays and Clay Minerals 7 records found  Search took 0.03 seconds. 
1.
9 p, 1.0 MB Effect of Cd(II) on the ripening of ferrihydrite in alkaline media / Alvarez, Mariana (Universidad Nacional del Sur. Departamento de Química) ; Horst, María Fernanda (Universidad Nacional del Sur. Departamento de Química) ; Sileo, Elsa E. (Universidad de Buenos Aires. Departamento de Química Inorgánica) ; Rueda, Elsa H. (Universidad Nacional del Sur. Departamento de Química)
To acquire a better understanding of the influence exerted by the presence of Cd during the process of transforming ferrihydrite to goethite, the morphological and structural changes of several samples obtained by the addition of Cd to a suspension of nascent goethite were explored, and their chemical reactivity in acid media assessed. [...]
2012 - 10.1346/CCMN.2012.0600201
Clays and Clay Minerals, Vol. 60, Núm. 2 (2012) , p. 99-107  
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2.
13 p, 3.1 MB The effects of salinity and shear history on the rheological characteristics of illite-rich and na-montmorillonite-rich clays / Jeong, Sueng W. (Korea Institute of Geoscience and Mineral Resources. Geologic Environment Division) ; Locat, Jacques (Laval University. Department of Geology and Engineering Geology) ; Leroueil, Serge (Laval University. Department of Civil Engineering)
Particle-particle interactions in natural clays can be evaluated by their rheological behavior, but the results are often affected by the physicochemical properties of the clays. The behaviors of two fundamentally different types of clays (low-activity and high-activity) differ with respect to salinity and a time factor (duration of shearing at a given shear rate): Illite-rich Jonquiere clay (low-activity clay, Canada) and montmorillonite-rich Wyoming bentonite (high-activity clay, USA). [...]
2012 - 10.1346/CCMN.2012.0600202
Clays and Clay Minerals, Vol. 60, Núm. 2 (2012) , p. 108-120  
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3.
15 p, 1.3 MB Ni enrichment and stability of Al-free garnierite solid-solutions : A thermodynamic approach / Galí, S. (Universitat de Barcelona. Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals) ; Soler Matamala, Josep Maria (Institut de Diagnosi Ambiental i Estudis de l'Aigua) ; Proenza, J. A. (Universitat de Barcelona. Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals) ; Lewis, J. F. (The George Washington University. Department of Earth and Environmental Sciences) ; Cama Robert, Jordi (Institut de Diagnosi Ambiental i Estudis de l'Aigua) ; Tauler, E. (Universitat de Barcelona. Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals)
Garnierites represent significant Ni ore minerals in the many Ni-laterite deposits worldwide. The occurrence of a variety of garnierite minerals with variable Ni content poses questions about the conditions of their formation. [...]
2012 - 10.1346/CCMN.2012.0600203
Clays and Clay Minerals, Vol. 60, Núm. 2 (2012) , p. 121-135  
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4.
17 p, 871.8 KB The effect of smectite on the corrosion of iron metal / Balko, Barbara A. (Lewis and Clark College. Chemistry Department) ; Bossé, Stephanie A. (Lewis and Clark College. Chemistry Department) ; Cade, Anne E. (Lewis and Clark College. Chemistry Department) ; Jones-Landry, Elise F. (Lewis and Clark College. Chemistry Department) ; Amonette, James E. (Pacific Northwest National Laboratory. Fundamental and Computational Sciences Directorate) ; Daschbach, John L. (Pacific Northwest National Laboratory. Environmental Molecular Sciences Laboratory)
The combination of zero-valent iron (ZVI) and a clay-type amendment is often observed to have a synergistic effect on the rate of reduction reactions. In the present study, electrochemical techniques were used to determine the mechanism of interaction between the iron (Fe) and smectite clay minerals. [...]
2012 - 10.1346/CCMN.2012.0600204
Clays and Clay Minerals, Vol. 60, Núm. 2 (2012) , p. 136-152  
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5.
9 p, 560.6 KB Sorption of naringin from aqueous solution by modified clay / Arellano-Cardenas, Sofia (Escuela Nacional de Ciencias Biologicas-IPN. Departamento de Graduados e Investigacion en Alimentos) ; Gallardo-Velazquez, Tzayhri (Escuela Nacional de Ciencias Biologicas-IPN. Departamento de Graduados e Investigacion en Alimentos) ; Poumian-Gamboa, Gloria V. (Escuela Nacional de Ciencias Biologicas-IPN. Departamento de Graduados e Investigacion en Alimentos) ; Osorio-Revilla, Guillermo (Escuela Nacional de Ciencias Biologicas-IPN- Departamento de Graduados e Investigacion en Alimentos) ; Lopez-Cortez, Socorro (Escuela Nacional de Ciencias Biologicas-IPN. Departamento de Graduados e Investigacion en Alimentos) ; Rivera-Espinoza, Yadira (Escuela Nacional de Ciencias Biologicas-IPN. Departamento de Graduados e Investigacion en Alimentos)
The flavonoid naringin is the main source of the undesirable bitter taste in some citrus juices. In commercial debittering processes, the naringin is adsorbed on non-ionic polymeric resins. Organo-clays (OCs), which have been used as sorbents for organic pollutants, could also have affinity for the naringin molecule, and thus potentially could serve as a debittering agent. [...]
2012 - 10.1346/CCMN.2012.0600205
Clays and Clay Minerals, Vol. 60, Núm. 2 (2012) , p. 153-161  
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6.
14 p, 1.5 MB Tritium content of clay minerals / Marston, Thomas M. (University of Utah. Department of Geology and Geophysics) ; Parry, W. T. (University of Utah. Department of Geology and Geophysics) ; Bowman, John R. (University of Utah. Department of Geology and Geophysics) ; Kip Solomon, D. (University of Utah. Department of Geology and Geophysics)
The presence, percentage, origins, and rate of formation of clay minerals have been important components in studies involving the geochemical and structural composition of waste-rock piles. The objective of the present study was to investigate the use of tritium as an indicator of the origin of clay minerals within such piles. [...]
2012 - 10.1346/CCMN.2012.0600208
Clays and Clay Minerals, Vol. 60, Núm. 2 (2012) , p. 186-199  
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7.
26 p, 3.8 MB Experimental study of the stability and phase relations of clays at high temperature in a thermal gradient / Vidal, O. (Université Joseph Fourier) ; Baldeyrou, A. (Université de Strasbourg) ; Beaufort, Daniel (Université Poitiers) ; Fritz, B. (Université de Strasbourg) ; Geoffroy, N. (Université Joseph Fourier) ; Lanson, Bruno (Université Joseph Fourier)
Clays are involved in a variety of natural and managed processes, and calculation of their stability conditions is important. Such calculations are still fraught with large uncertainties owing to the lack of experimental constraints on the thermodynamic properties of clays, and bracketing of equilibrium reactions at low temperature is barely possible. [...]
2012 - 10.1346/CCMN.2012.0600209
Clays and Clay Minerals, Vol. 60, Núm. 2 (2012) , p. 200-225  
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