Ca-Al EXCHANGE SELECTIVITY AND ITS EFFECT ON ACID-EXTRACTION OF TRACE CADMIUM FROM A SMECTITIC SOIL
スポンサーリンク
概要
- 論文の詳細を見る
We carried out Ca-Al exchange equilibrium experiments on a smectitic soil and calculated Gaines-Thomas selectivity coefficient. The natural logarithm of the Gaines-Thomas selectivity coefficient scattered around 4.6 with no noticeable trend. The natural logarithm of the thermodynamic equilibrium constant calculated with the aid of Rothmund-Kornfeld equation was 4.58 at 298 K and 1 atm, indicating that the soil strongly prefers Al^3+ to Ca^<3+>. On the basis of the measured A1^<3+>-selectivity we numerically examined the effect of cation exchange reactions involving A1^<3+> during the acid extraction of Cd from soils. The results of computation showed that more Cd^<2+> is extracted when the extracting acid dissolves soil minerals and releases A1^<3+>. This is due to the higher preference of smectite for Al^<3+> than for H^+.
- 日本粘土学会の論文
著者
-
WADA SHIN-ICHIRO
Faculty of Agriculture, Kyushu University
-
Wada Shin-ichiro
Faculty Of Agriculture Kyushu University
-
Mori Y
Faculty Of Agriculture Kyushu University
-
Takase M
Matsushita Electric Industrial Co. Ltd. Osaka Jpn
-
Takase Masaaki
Faculty Of Agriculture Kyushu University:(present Address) Nestle Japan
-
MORI YUKI
Faculty of Agriculture, Kyushu University
-
Mori Yuki
Faculty Of Agriculture Kyushu University
関連論文
- DETERMINATION OF CARBONATE CONTENT OF SOILS AND CLAYS BY USING CO_2 DETECTOR TUBE : IMPROVEMENT OF THE METHOD AND SOME APPLICATIONS
- (Inorganic Nanofiber/Enzyme) Hybrid Hydrogel : Preparation, Characterization, and Enzymatic Activity of Imogolite/Pepsin Conjugate
- In Situ Studies on X-Ray Diffraction and Resistance of Graphitelike Film during the First Redox Cycle and the Effect of 12 Crown 4
- In Situ Measurements of Drastic Change of Electrical Conductivity and Structure upon Electrochemical Lithium Intercalation in Pyrolyzed Poly(hydrazocarbonyl-1-4-phenylenecarbonyl) Film
- Electrical Properties of Pyrolyzed and Electrochemically Lithium-Doped Poly (hydrazocarbonyl-1, 4-phenylenecarbonyl) Film
- Unique Electrical and Magnetic Properties of Pyrolyzed Poly(hydrazocarbonyl-1,4-phenylenecarbonyl) Film
- 23-27 Kinetics of Cu, Pb and Zn adsorption by soils differed in cation exchanger composition
- Soil Chemistry Effect on Feasibility of Cr-decontamination by Acid-Washing
- Surface Modification of Aluminosilicate Nanofiber "Imogolite"
- 現場に近い条件で土壌の硝酸保持能を直接測定する実験法
- Ca-Al EXCHANGE SELECTIVITY AND ITS EFFECT ON ACID-EXTRACTION OF TRACE CADMIUM FROM A SMECTITIC SOIL
- EFFECT OF CALCIUM, SODIUM AND CHLORIDE IONS ON THE GROWTH OF IMOGOLITE TUBES AS MEASUED BY GEL FORMING PROPERTY
- Effect of Monosilicic Acid on Hydrolytic Polymerization of Fe(III) and Structure of Hydrolytic Products
- MINERALOGICAL CHARACTERIZATION OF ASIAN DUST COLLECTED IN FUKUOKA, SOUTHWEST JAPAN
- Properties of Layer Silicates Formed from MgO-Sio_2-H_O Mixtures at 25℃
- Embryonic Halloysites in a Paddy Soil Derived from Valcanic Ash
- PROPERTIES OF HYDROXYALUMINUM SILICATE IONS FORMED BY INSTANTANEOUS MIXING OF SODIUM ORTHOSILICATE AND ALUMINUM CHLORIDE SOLUTIONS
- Mineralogical and Chemical Properties and Lability of Cadmium in some Soils from Japan and Vietnam
- Reactivity with phosphate and phytotoxicity of hydroxyaluminosilicate ions synthesized by instantaneous mixing of aluminum chloride and sodium orthosilicate solutions(Soil Chemistry and Soil Mineralogy)
- Reactions of Lead Ion in Mixtures of Silica and Magnesia
- Empirical equations for prediction of major cation concentrations in soil solution using concentrations in water extracts(Soil Chemistry and Mineralogy)
- Prediction of nitrate and chloride ion concentrations in soil solution using water extracts(Soil Chemistry)
- SIMPLE METHOD FOR DETERMINATION OF CARBONATE ADSORPTION AT ELEVATED CARBON DIOXIDE CONCENTRATION
- CLAY MINERALOGY OF THE B HORIZONS OF TWO HYDRANDEPTS, A TORROX AND A HUMITROPEPT IN HAWAII
- 現場に近い条件で土壌の硝酸保持能を直接測定する実験法
- EFFECTS OF MINERALOGY OF SUSPENDED MATERIALS ON PERFORMANCE OF WEATHERED VOLCANIC ASH-BASED FLOCCULANT
- COMPARISON OF ALLOPHANE AND IMOGOLITE SOLS AS A FLOCCULATING AGENT FOR SUSPENDED CLAY PARTICLES
- EFFECTS OF MINERALOGY OF SUSPENDED MATERIALS ON PERFORMANCE OF WEATHERED VOLCANIC ASH-BASED FLOCCULANT