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Envelope, adsorption

Pigna M, Colombo C, Violante A (2003) Competitive sorption of arsenate and phosphate on synthetic hematites (in Italian). Proceedings XXI Congress of Societa Italiana Chimica Agraria SICA (Ancona), pp 70-76 Quirk JP (1955) Significance of surface area calculated from water vapour sorption isotherms by use of the B. E. T. equation. Soil Sci 80 423-430 Rancourt DG, Fortin D, Pichler T, Lamarche G (2001) Mineralogical characterization of a natural As-rich hydrous ferric oxide coprecipitate formed by mining hydrothermal fluids and seawater. Am Mineral 86 834-851 Raven K, Jain A, Loeppert, RH (1998) Arsenite and arsenate adsorption on ferrihydrite kinetics, equilibrium, and adsorption envelopes. Environ Sci Technol 32 344-349... [Pg.67]

Anion adsorption by goethite and gibbsite. I. The role of the proton in determining adsorption envelopes. J. Soil Sci. 23 177-192... [Pg.589]

Rau, M. Rieck, D. Evans, J.W. (1987) Investigation of iron oxide reduction by TEM. Metallurgical Transactions 188 257-278 Raven, K.P. Jain, A. Loeppert, R.H. (1998) Ar-senite and arsenate adsorption on ferrihy-drite Kinetics, equilibrium, and adsorption envelopes. Environ. Sci. Techn. 32 344-349 Rea, B.A. Davis, J.A. Waychunas, G.A. (1994) Studies of the reactivity of the ferrihydrite surface by iron isotopic exchange and Moss-bauer spectroscopy. Clays Clay Min. 42 23-34... [Pg.619]

A Model for the Mechanism of Adsorption. (1) Adsorption Envelope. The curve relating r0(PH), the value for maximum adsorption at a particular pH, and pH is termed the "adsorption envelope. ... [Pg.93]

Coethite An EXAFSd and XANES study of As(lll) adsorption to a synthetic goethite suggested bidentate inner-sphere binding. One plot of As(lll) and As(V) pH adsorption envelopes. As(lll) data fitted to constant capacitance SCMf Manning, Fendorf and Goldberg (1998)... [Pg.307]

Raven, K.P., Jain, A. and Loeppert, R.H. (1998) Arsenite and arsenate adsorption on ferrihydrite kinetics, equilibrium, and adsorption envelopes. Environmental Science and Technology, 32(3), 344-49. [Pg.347]

Such behavior is called an adsorption envelope .13 The adsorption of oxalate anions on silica is minimal, because silicon dioxide has mainly negatively charged sites in the measured pH range (from 3.0 to 10.0). Oxalate ions do not adsorb nonspecifically on such an interface. [Pg.388]

TABLE 8.2. Adsorption Envelopes for As(V) and As(III) on Various Soil Solids... [Pg.318]

The constant capacitance model has been applied successfully to describe the adsorption of both inorganic and organic anions by hydrous oxides.Both adsorption isotherms and adsorption envelopes like those illustrated in Fig. 4.8 are accounted for quantitatively, except in the case of sulfate adsorption. It is possible, however, that this anion adsorbs through outer-sphere instead of inner-sphere complex formation, as discussed in Sec. 4.4. Aside from sulfate, anion adsorption envelopes are predicted in the constant capacitance model on the basis of an increase in [OH ], which causes the concentrations of the surface complexes in Eq. 5.53 to decrease, and a decrease in o-p. [Pg.177]

Figure 23. Specific amounts of five aminocarboxylic compounds adsorbed on a-Fc203 particles after 1 h of equilibration at 25°C as a function of pH (adsorption envelope) [33],... Figure 23. Specific amounts of five aminocarboxylic compounds adsorbed on a-Fc203 particles after 1 h of equilibration at 25°C as a function of pH (adsorption envelope) [33],...
See other pages where Envelope, adsorption is mentioned: [Pg.262]    [Pg.262]    [Pg.267]    [Pg.272]    [Pg.309]    [Pg.328]    [Pg.963]    [Pg.42]    [Pg.187]    [Pg.139]    [Pg.184]    [Pg.187]    [Pg.426]   
See also in sourсe #XX -- [ Pg.85 ]



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Goethite adsorption envelope

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