The interaction of sulfonamide antimicrobial agents with smectite clay minerals and humic acid (HA)-clay complexes was investigated in batch experiments to assess the influence of adsorbed humic acid on sulfonamide sorption. Soil HA-clay complexes were produced at HA:clay ratios of 1:5, 1:50, and 1:100 (w/w). Vibrational and electronic spectroscopy indicated the preferential adsorption of polar...

Organic matter in sewage, soil, and aquatic systems may enhance or inhibit the infectivity of viruses associated with particulates (e.g., clay minerals, sediments). The purpose of this investigation was to identify the mechanisms whereby organic matter, in the form of defined proteins, affects the adsorption of reovirus to the clay minerals kaolinite and montmorillonite and its subsequent infec...

-Tetramethylphosphonium-smectite (TMP-clay) and tetramethylammonium-smectite (TMAclay), were prepared and characterized as adsorbents for a series of aromatic and chlorinated hydrocarbons. The sorption of benzene, alkylbenzenes, and carbon tetrachloride as vapors and as solutes from water was studied to evaluate the effect of water on adsorption efficiency. Adsorption of organic vapors depended...

University of Modena and Reggio Emilia – Earth Sciences Department, Via S. Eufemia 19, 41100 Modena, Italy, University of Trento, Department of Materials Engineering and Industrial Technologies, Via Mesiano 77, 38050 Trento, Italy, Portland State University, Department of Geology, PO Box 751, Portland, OR 97207-0751, USA, and Department of Physics and Astronomy, Michigan State University, East ...

Solanum nigrum cultivated on different soil texture types, sandy clay loam, silty clay loam, clay loam, loam, and control soils, were evaluated for proximate compositions, antinutrients, vitamins, and mineral composition with plant age using standard analytical methods. Accumulation of trace elements using translocation factor was studied to determine their toxic levels in plant tissues. Data w...

Fairy chimneys formed within the Cappadocian tuft are important landforms. Some of them were dwelled in the past and contain valuable wall paintings. However, the tuff is chemically and physically deteriorated due to atmospheric effects. the chemical weathering of the volcanic glass of the tuft produces smectite-type clay mineral. Assessment of the clay content of the weathered zones developed ...

The organization in three dimensions of clay particles in natural or man-made clayey materials is a dominant parameter influencing their mechanical, porosity, and permeability properties (Foster & De, 1971; Arch & Maltman, 1990; Luo et al., 1992; Schneider et al., 1994). In order to explain the relationships between clay textures and permeability or retention capacities, it is necessary to quan...