Navegar

Colección

Datos Estadísticas

Artículo

La versión final de este artículo es de uso interno. El editor solo permite incluir en el repositorio el artículo en su versión post-print. Por favor, si usted la posee enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

Electrophoretic mobilities of calcite particles immersed in saturated aqueous solutions (closed to atmospheric carbon dioxide) were measured as a function of solution composition at 25°C. Electrokinetic ζ potentials of calcite suspended in water are negative and slightly influenced by pH in the range 8.5 ≤ pH ≤ 10.5. At constant Ca2+ equilibrium concentration, pH does not affect ζ potential values. The value of ζ is strongly dependent on pCa2+ or pCO32- = pKso - pCa2+); below the isoelectric point of calcite, pCa2+ 2.7, ζ potentials are positive. It is demonstrated that Ca2+ and CO32- are the only potential determining ions (pdi). The effect of magnesium ions on calcite ζ potential values is heavily dependent on pH, aging time, and Mg2+ concentration. At short equilibration times, the negative charge of calcite is reverted once the solution becomes supersaturated with respect to Mg(OH)2; below these pH values, Mg2+ behaves as an indifferent ion. At long equilibration times, positive surface charge develops in conditions of undersaturation with respect to Mg(OH)2 but only at the highest studied Mg2+ concentration. This finding is interpreted in terms of the formation of a surface layer of magnesium-bearing calcite, Mg2+, Ca2+, and CO32- being the pdi. The adsorption of dodecyl sulfate anions produces a more negative surface charge. Adsorption of DS- is strongly dependent on pCa2+; this dependence is dominated by the electrostatic contribution to the overall adsorption Gibbs energy. The nonelectrostatic contribution derived from the data is indicative of a weak chemical interaction between calcium surface ions and the surfactant head group. The implications of these results for natural water systems are briefly discussed. The electrokinetic behavior of biogenic calcium carbonate secreted by the tube forming worm Ficopomatus enigmaticus is also reported. © 1992.

Registro:

Documento: Artículo
Título:Electrokinetic properties of the calcite/water interface in the presence of magnesium and organic matter
Autor:Cicerone, D.S.; Regazzoni, A.E.; Blesa, M.A.
Filiación:Departamento Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon 2, 1427 Buenos Aires, Argentina
Departamento Química de Reactores, Comisión Nacional de Energía Atómica, Av. del Libertador 8250, 1429 Buenos Aires, Argentina
Año:1992
Volumen:154
Número:2
Página de inicio:423
Página de fin:433
DOI: http://dx.doi.org/10.1016/0021-9797(92)90158-I
Título revista:Journal of Colloid And Interface Science
Título revista abreviado:J. Colloid Interface Sci.
ISSN:00219797
CODEN:JCISA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v154_n2_p423_Cicerone

Referencias:

  • Somasundaran, Agar, (1967) J. Colloid Interface Sci., 24, p. 433
  • Fuerstenau, Gutiérrez, Elgillani, (1968) Trans. AIME, 241, p. 319
  • Mishra, (1978) Int. J. Miner. Process., 5, p. 69
  • Amankonah, Somasundaran, (1985) Colloids Surf., 15, p. 335
  • Foxall, Peterson, Rendall, Smith, (1979) J. Chem. Soc. Faraday Trans. 1, 75, p. 1034
  • Thompson, Pownall, (1989) J. Colloid Interface Sci., 131, p. 74
  • Siffert, Fimbel, (1984) Colloids Surf., 11, p. 377
  • McBride, Chemisorption and Precipitation of Mn2+ at CaCO3 Surfaces1 (1979) Soil Science Society of America Journal, 43, p. 693
  • McBride, (1980) Soil Sci. Soc. Am. J., 44, p. 26
  • Franklin, Morse, (1982) Ocean. Sci. Eng., 7, p. 147
  • Franklin, Morse, (1983) Mar. Chem., 12, p. 241
  • Zachara, Kittrick, Dake, Harsh, (1989) Geochim. Cosmochim. Acta, 53, p. 9
  • Suess, (1970) Geochim. Cosmochim. Acta, 34, p. 157
  • Suess, (1973) Geochim. Cosmochim. Acta, 37, p. 2435
  • Carter, (1978) Geochim. Cosmochim. Acta, 42, p. 1239
  • Lahann, Campbell, (1980) Geochim. Cosmochim. Acta, 44, p. 629
  • Zullig, (1985) Ph.D. thesis, , 2nd ed., Texas A&M University
  • Zullig, Morse, (1988) Geochim. Cosmochim. Acta, 52, p. 1667
  • Stipp, Hochella, (1991) Geochim. Cosmochim. Acta, 55, p. 1723
  • Charlet, Wersin, Stumm, (1990) Geochim. Cosmochim. Acta, 54, p. 2329
  • Morse, (1986) Mar. Chem., 20, p. 91
  • van Cappellen, (1991) Proceedings, International Conference on Interfacial Phenomena in the Environment, p. 45
  • Morse, Carbonates: Mineralogy and Chemistry (1983) Revs. Mineral., 11. , 2nd ed., R.J Reeder, Mineralogical Soc. of Amer, Washington, DC, Chap. 7
  • Lahann, Siebert, (1982) Geochim. Cosmochim. Acta, 46, p. 2229
  • Mucci, Morse, (1983) Geochim. Cosmochim. Acta, 47, p. 217
  • Burton, Walter, (1991) Geochim. Cosmochim. Acta, 55, p. 777
  • Plummer, MacKenzie, Predicting mineral solubility from rate data; application to the dissolution of magnesian calcites (1974) American Journal of Science, 274, p. 61
  • Möller, Parekh, (1975) Mar. Chem., 3, p. 63
  • Walter, Morse, (1984) Geochim. Cosmochim. Acta, 48, p. 1059
  • Bischoff, MacKenzie, Bishop, (1987) Geochim. Cosmochim. Acta, 51, p. 1413
  • Simkiss, (1960) Proc. Malac. Soc. London, 34, p. 89. , 2nd ed
  • Hare, (1963) Science, 139, p. 216
  • Mitterer, (1972) Geochim. Cosmochim. Acta, 36, p. 1407
  • Kitano, Hood, (1965) Geochim. Cosmochim. Acta, 29, p. 29
  • Lahann, (1978) J. Sediment. Petrol., 48, p. 337
  • Chave, Deffeyes, Weyl, Garrels, Thompson, (1962) Science, 137, p. 33
  • Keir, (1980) Geochim. Cosmochim. Acta, 44, p. 241
  • Walter, Morse, (1984) J. Sediment. Petrol., 54, p. 1081
  • Martell, Smith, (1976) Critical Stability Constants, 4. , 2nd ed., Plenum, New York
  • Hunter, (1981) Zeta Potential in Colloid Science, , R.H Ottewill, R.L Rowell, Academic Press, New York
  • Curreri, Onoda, Jr., Finlayson, (1979) J. Colloid Interface Sci., 69, p. 170
  • Lyklema, Overbeek, (1961) J. Colloid Sci., 16, p. 595
  • Lyklema, (1977) J. Colloid Interface Sci., 58, p. 242
  • Stumm, Holh, Dalang, (1976) Croat. Chem. Acta, 48, p. 491
  • Holh, Sigg, Stumm, Particulates in Water (1980) Adv. Chem. Ser., 189. , 2nd ed., M.C Kavanaugh, J.O Leckie, Amer. Chem. Soc, Washington, DC, Chap. 1
  • Schindler, Stumm, (1987) Aquatic Surface Chemistry, , W Stumm, Wiley, New York, Chap. 4
  • Davis, Kent, Mineral—Water Interface Geochemistry (1990) Revs. Mineral., 23. , 2nd ed., M.F Hochella, A.F White, Mineralogical Soc. of Amer, Washington, DC, Chap. 5
  • Huang, Fowkes, Lloyd, Sanders, (1991) Langmuir, 7, p. 1742
  • Davis, Fuller, Cook, (1987) Geochim. Cosmochim. Acta, 51, p. 1477
  • Morse, Mucci, Walter, Kaminsky, (1979) Science, 205, p. 904
  • Lippmann, (1960) Fortschr. Mineral., 38, p. 156
  • Parks, (1965) Chem. Rev., 65, p. 177
  • Zachara, Cowan, Resch, (1991) Geochim. Cosmochim. Acta, 55, p. 1549
  • Zachara, Kittrick, Harsh, (1988) Geochim. Cosmochim. Acta, 52, p. 2281
  • Somasundaran, Healy, Fuerstenau, (1964) J. Phys. Chem., 68, p. 3562
  • Fuerstenau, Healy, Somasundaran, (1964) Trans. AIME, 229, p. 321
  • Goddard, Somasundaran, (1976) Croat. Chem. Acta, 48, p. 451
  • Chibowski, (1980) J. Colloid Interface Sci., 76, p. 371
  • Fuerstenau, Miller, (1967) Trans. AIME, 238, p. 153
  • Prédali, (1969) Trans. IMM (London), 78, p. C140
  • Szczypa, Chibowski, Kuspit, (1979) Trans. IMM (London), 88, p. C11
  • Stumm, Morgan, (1981) Aquatic Chemistry, , 2nd ed., Wiley, New York
  • Cicerone, D. S., Rigotti, G., and Blesa, M. A., to be submitted

Citas:

---------- APA ----------
Cicerone, D.S., Regazzoni, A.E. & Blesa, M.A. (1992) . Electrokinetic properties of the calcite/water interface in the presence of magnesium and organic matter. Journal of Colloid And Interface Science, 154(2), 423-433.
http://dx.doi.org/10.1016/0021-9797(92)90158-I
---------- CHICAGO ----------
Cicerone, D.S., Regazzoni, A.E., Blesa, M.A. "Electrokinetic properties of the calcite/water interface in the presence of magnesium and organic matter" . Journal of Colloid And Interface Science 154, no. 2 (1992) : 423-433.
http://dx.doi.org/10.1016/0021-9797(92)90158-I
---------- MLA ----------
Cicerone, D.S., Regazzoni, A.E., Blesa, M.A. "Electrokinetic properties of the calcite/water interface in the presence of magnesium and organic matter" . Journal of Colloid And Interface Science, vol. 154, no. 2, 1992, pp. 423-433.
http://dx.doi.org/10.1016/0021-9797(92)90158-I
---------- VANCOUVER ----------
Cicerone, D.S., Regazzoni, A.E., Blesa, M.A. Electrokinetic properties of the calcite/water interface in the presence of magnesium and organic matter. J. Colloid Interface Sci. 1992;154(2):423-433.
http://dx.doi.org/10.1016/0021-9797(92)90158-I