Titlebook: Surfactants and Colloids in the Environment; M. J. Schwuger,F. H. Haegel Conference proceedings 1994 Springer-Verlag Berlin Heidelberg 199

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Adsorption of ionic surfactants on clay minerals and new insights in hydrophobic interactions,ure. A new molecular interpretation for hydrophobic bonding is proposed, based on quasichemical lattice statistics with orientation-dependent interactions. All experimental features can at least semiquantitatively be explained by this new model.

Ingratiate

The kinetic spectrum method applied to the ion exchange of Cd(II) at Mg(II)-montmorillonite,do first order rate constants between 0.1 s. and 3 s.. These processes are assigned to the exchange in the interlayer space and have a mean energy and entropy of activation of 20 kJ mol. and −180 J mol. K., respectively. The rate controlling step is the hindered diffusion at the internal surfaces of the montmorillonite.

MARS

The clay/water interface and its role in the environment,meability of the soil and the adsorption of solutes by the clay reduces their mobility. Thus, clay-water interaction has a significant impact on the convective and diffusive transport of pollutants through the soil.

placebo

AROMA

X-ray microscopy studies of aqueous colloid systems,. The aggregation of hematite particles under the influence of divalent cations (Ca.) is investigated. The dependence of the size and the shape of the aggregates on the amount of added Ca. is directly visualized.

顶点

有害处

,Thermochemistry and adsorption equilibria at hematite — water interface, electrostatic contribution. The following obtained calorimetric value: Δ... — Δ...=33.3 kJ mol. agrees well with the result of p.z.c. measurements; Δ... — Δ...=33.2 kJ mol.. In addition to the thermochemistry results, the adsorption of dodecylsulfate and salicylate ions on the hematite was examined.

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胆小鬼