National Conference on Clays and Clay ~ V [ Inerals
نویسنده
چکیده
Organic matter removal is accomplished rapidly and efficiently without removing carbonates by treating samples wi~h a sodium hypochlorite solution. Quantities of organic matter lefr in samples by this treatment are commonly less than remain after hydrogen peroxide treatment of acidified samples. Stable suspensions result from the use of a sodium carbonate-sodium bicarbonate solution to wash and sodium saturate the samples without dissolving or complexing sesquioxides.
منابع مشابه
Estimation of the compression behaviour of reconstituted clays
The void index is a relative quantity measuring the position of the current void ratio of a clay against the void ratios of the clay at two specific vertical effective stresses (i.e., σ v ′ = 100 kPa and σ v ′ =1000 kPa). Based on this concept, a simple systematic tool is proposed for estimating the compression behaviour of reconstituted clays over a wide range of stresses and water contents. F...
متن کاملSome Results of the Study of Clay Minerals in the U.s.s.r.*
Clay mineral studies in the U.S.S.R., mainly since 1960, are summarized. Electron diffraction techniques especially have been developed and used extensively. Methods have been developed for simultaneous recording of DTA curves and other properties. Polytypism of phyllosilicates has been studied intensively by Zvyagin and others. Mucfi new information on the structure and morphology of halloysit...
متن کاملتثبیت پتاسیم و ویژگی بار الکتریکی رس خاک در شماری از خاکهای مناطق مرکزی و شمال ایران
Potassium fixation and release by phillosilicate clay minerals in soils are very important processes influencing the availability of K to plants. This investigation was conducted to determine the potassium fixation capacity and charge characteristics of soil clays of 15 surface soils (0-30 cm) from central and northern Iran. After clay particle separation, both total and tetrahedral cation exch...
متن کاملتثبیت پتاسیم و ویژگی بار الکتریکی رس خاک در شماری از خاکهای مناطق مرکزی و شمال ایران
Potassium fixation and release by phillosilicate clay minerals in soils are very important processes influencing the availability of K to plants. This investigation was conducted to determine the potassium fixation capacity and charge characteristics of soil clays of 15 surface soils (0-30 cm) from central and northern Iran. After clay particle separation, both total and tetrahedral cation ex...
متن کاملAdsorption of Ethyl Acetate onto Modified Clays and Its Regeneration with Supercritical Co2
Modified clays were used to remove ethyl acetate from aqueous solutions. These clays were regenerated using supercritical CO2. Structural changes in the montmorillonite clay after treatment with quaternary amines were studied. The surface properties of the modified clay changed from highly hydrophilic to highly organophilic. The clay was regenerated by percolation of a stream of CO2 through the...
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