Results 131 to 140 of about 5,764,275 (183)
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Adsorption by Organo-Clay Complexes
Clays and clay minerals (National Conference on Clays and Clay Minerals), 1960AbstractThe adsorption of phenols from dilute aqueous solution by n-aliphatic amine and Ethomeen clays has been investigated and it is shown that dodecylammonium bentonite is the most active member of the series ethylammonium to octadecylammonium bentonite.
C.T. COWAN, D. WHITE
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Distribution and Incorporation Mode of the Herbicide MCPA in Soil Derived Organo-Clay Complexes
Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes, 2017The incorporation of xenobiotics into soil, especially via covalent bonds or sequestration has a major influence on the environmental behavior including toxicity, mobility, and bioavailability. The incorporation mode of 4-chloro-2-methylphenoxyacetic acid (MCPA) into organo-clay complexes has been investigated under a low (8.5 mg MCPA/kg soil) and high
Jan Schwarzbauer +2 more
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Fractionation and Characterization of Naturally Occurring Organo‐Clay Complexes
Soil Science Society of America Journal, 1966Abstract Clay separated from a Solonetz Bnt horizon was fractionated lnto coarse (2–0.2 µ), medium (0.2–0.14 µ), fine (0.14–0.08 µ) and very fine (<0.08 µ) size fractions. Organic matter from these fractions was obtained by extractions with 0.1M Na 4 P
M. A. Arshad, L. E. Lowe
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Adsorption of Aldicarb By Clays and Soil Organo‐Clay Complexes
Soil Science Society of America Journal, 1978Abstract Adsorption experiments conducted with S‐methyl‐ 14 C‐aldicarb resulted in what appeared to be negative adsorption (exclusion) of the toxicant on Ca− and Al− saturated montmorillonite clays.
James R. Supak +2 more
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Агрохимия, 2023
Organo-clay complexes of agrochernozems of different localization on the slope were studied, including by the method of dynamic light scattering (DLS). A decrease in the concentration of organic carbon (Corg) of silty fractions in the arable horizons of washed-out agrochernozems was revealed, which was a consequence of the constant exposure of the soil
E. V. Tsomaeva +2 more
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Organo-clay complexes of agrochernozems of different localization on the slope were studied, including by the method of dynamic light scattering (DLS). A decrease in the concentration of organic carbon (Corg) of silty fractions in the arable horizons of washed-out agrochernozems was revealed, which was a consequence of the constant exposure of the soil
E. V. Tsomaeva +2 more
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Adsorption and desorption of cadmium by synthetic and natural organo-clay complexes
Geoderma, 1976Abstract Tracer levels of 109 Cd were used to study the adsorption and desorption of Cd by synthetic and natural organo—clay complexes. Synthetic organo—clay complexes were made by adsorbing humic acid extracted from soil to various forms of μm diameter montmorillonite (Na, Ca, Al, and Fe saturated and Ca-montmorillonite coated with Al or Fe ...
Rachel Levy, C.W Francis
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Sorption of 2,4-dichlorophenoxy propionic acid by organo-clay complexes
Applied Clay Science, 2000Wyoming montmorillonite (SWy-1, MON), Charng-Bin (SCB) soil montmorillonite, and W.R. Grace vermiculite (VER) have been used as adsorbents to prepare organo-clays. Sorption of 2,4-dichlorophenoxy propionic acid (2,4-DP) by organo-clays is greater after adding of hexadecyltrimethyl-ammonium (HDTMA) to 200% CEC of the clay than after adding the same ...
Y.H Hsu, M.K Wang, C.W Pai, Y.S Wang
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Naturally occurring organo-clay complexes of orthic black chernozems
Geoderma, 1969Abstract The nature and degree of organo-clay complexing in three orthic black chernozem soils were studied. Clay separated from the Ah2-horizons was fractionated into the 2-1μ (coarse), 1-0.2μ (medium), and 0.2–0.08μ (fine) fractions. Both untreated and peroxide-treated clay fractions were analyzed for clay mineral content, cation exchange capacity (
M.J. Dudas, S. Pawluk
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