Showing papers in "Applied Clay Science in 1985"

TL;DR: In this article, the catalytic power of 14 inorganic materials, namely, 4 synthetic short-range ordered oxides, 4 CBD-treated clay minerals, and 6 primary minerals in the abiotic synthesis of humic acids (HA) through the oxidative polymerization of hydroquinone was investigated.

TL;DR: In this article, the behavior of the clay/water/bitumen/sand systems at Syncrude Canada Ltd. is studied, and data on system rheology, gel strength of sand/sludge mixes, void ratio to permeability relationships for sludge, and the void ratio/effective stress relationship for silt is presented.

TL;DR: In this article, a review of the application of clays in current and future waste disposal practices is presented, focusing on source-term classification and current and proposed disposal methodology of low-level and high-level wastes.

TL;DR: An overview of the kinetics of K exchange in clay and soil systems is presented in this paper, where the rates of the reactions between the forms of K in a heterogeneous system are primarily dependent upon the types and amounts of clay minerals present.

TL;DR: In this paper, it was shown that for allophanic soils there is a weaker correlation of phosphate retention with aluminum soluble in Tamm's solution than in non-allophane soils, due to the dissolution of aluminum in hydrous oxides, organic complexes, and allophane, all of which have differing capabilities to retain phosphate.

TL;DR: A review of recent studies on the genesis and properties of non-allophanic andisols in Japan is presented in this paper, where it is considered that formation of allophane and imogolite is inhibited by supply of a large quantity of organic matter from the vegetation under low pH (about 5 or less) conditions.

TL;DR: In this paper, the authors show that amorphous or poorly ordered clay materials of weathered volcanic ash and pumice which are mainly composed of proto-imogolite allophane are most effective in the removal of P These clay materials may be used to cover bottom sediments to hinder the release of P from the sea and fresh water sediments.

TL;DR: In this article, the influence of Cl −, NO 3 −, ClO 4 −, ClO4 −, Na +, Na+, and Ca 2+ on the kinetics of Hg adsorption by montmorillonite was studied.

TL;DR: In this paper, seven soil profiles from the Nagagami River Watershed in mid-northern Ontario were sampled for the purpose of investigating the influence of texture on soil development and weathering within the watershed.

TL;DR: In this article, the nature of the sensitive clays of Eastern Canada is discussed and references are made to some engineering geology problems which illustrate the dominant role of the mineralogy in their behaviour.

TL;DR: In this article, the mechanics of coal subsidence in terms of clay mineralogy, degree of cementation and overcompaction, osmotic and matrix suction, cation geochemistry of the resaturation fluid, and the availability of water are discussed.

TL;DR: In this paper, X-ray diffraction analysis indicates that the Pb phases present are PbO, Pb3(CO3)2(OH)2, and 7PbO·PbI2·2H2O.

TL;DR: In this article, the chlorite microdivision of the silty fraction, the formation of interstratified (14C-14V) chlorite-vermiculite clay which by magnesium release is further transformed into a vermiculate, and the alteration and partial removal of hydroxyaluminum interlayers of a chloritized smectite present in the clay fraction.

TL;DR: In this article, the authors examined three case histories where unusual soil performance or engineering properties were encountered and the clay mineralogy and fabric were examined for each case, including collapsing soils, highly plastic overconsolidated clays, anisotropic soils, soft clays and locked sands.

TL;DR: In this article, the very fine-grained minerals were separated from the burnt oil sand as well as from the sand fraction from which bitumen had been removed with organic solvents and examined by 9.4 and 34 GHz electron paramagnetic resonance (EPR), Fourier transform infra-red (FTIR) and X-ray diffraction (XRD) spectroscopy.

TL;DR: In this paper, a mica sample was heated in a muffle furnace for different periods at several temperatures between 300° and 950°C before they were characterized in terms of their K release to the NaClNaBPh4 solutions, and the effects of these thermal treatments on the Fe2+ content, d-spacing and weight of mica samples were also recorded.

TL;DR: A case history of how an interface between science and industry was developed in the area of aluminum hydroxide antacid materials is given in this article, with Canadian scientists being among the most active.

TL;DR: In this article, the nature and type of interlayered aluminum formed in Wyoming bentonite clay in the presence of Cl and SO4 anions is discussed, and a method to remove the interlayers of aluminum from this clay by changing the chemical environment of the system which resulted in the regaining of the blocked cation exchange capacity.

TL;DR: In this paper, three profiles from the Orford area, Quebec and two from La Barriere, Cantal, France, developed on basic volcanic materials were compared from the points of view of physical, chemical and mineralogical properties.