Abstract
The sorption of metal ions (Pb2+, Zn2+ and Cu2+) and soil humic acids (HA) from aqueous solutions onto mineral particles (sand, calcite and clay) was investigated using a batch equilibrium system. The sorption reactions in two- component systems (heavy metals-mineral particles and humic acids- mineral particles), as well as interactions in three-component system (heavy metals-humic acids-mineral particles) were examined. Results showed that the presence of humic acids, dissolved or bound onto mineral surfaces, considerably influenced the fixation of heavy metals. The various effects, depending on mineral type, humic concentration and specific metal-ion, were observed in three- component system. Sorption of Cu2+-ions on all minerals studied rapidly increased as the concentration of dissolved HA increased. The amount of Pb2+-ions sorbed on sand slightly decreased, while on kaolin increased between 15 and 20%. Sorption of Zn2+-ions on all minerals studied decreased at pH 4. At pH 5.5 the sorption of Zn2+-ions onto calcite decreased, while on kaolin and sand increased as a function of the humic acid concentration giving the curve with maximum at c(HA) = 2.5 mmol C L-1. At pH 6.5 sorption onto kaolin and sand increased. This effect occurs as a result of the conditional stability constant of Zn-HA complexes increasing at higher pH which in turn promotes the chelation of Zn2+-ions to mineral- bound humic substances. The enhanced sorption of metal ions from the aqueous phase in three-component systems is not only the result of mineral sorption of free metals but also the result of chelation with HA sorbed on the mineral surface.
Similar content being viewed by others
References
Briški, F., Petrovi´c, M., Kašelan-Macan, M. and Sipos, L.: 1994, Biocatalysis 10, 1.
Buffle, J., Greter, F. L. and Haerdi, W.: 1977, Anal. Chem. 49, 216.
Busenberg, E. and Plumer, L. N.: 1986, in Mumpton, F. A. (ed.), Studies in Diagenesis, p. 139.
Comans, R. N. J.: 1987, Wat. Res. 21, 1573.
Cowan, C. E., Zachara, J. M. and Resch, C. T.: 1991, Environ. Sci. Technol. 25, 437.
Di Toro, D. M., Mahony, J. D., Kirchgraber, P. R., O'Byrne, A. L., Pasquale, L. R. and Piccrilli, D. C.: 1985, Environ. Sci. Technol. 20, 55.
Farly, K. J., Dzombak, D. A. and Morel, F. M.: 1985, J. Colloid Interface Sci. 106, 226.
Farrah, H. and Pickering, W. F.: 1977, Aust. J. Chem. 30, 1417.
Gadde, R. R. and Laitinen, H. A.: 1974, Anal. Chem. 46, 2022.
Gagnon, C., Arnac, M. and Brindle, J. R.: 1992, Wat. Res. 26, 1067.
Guy, R. D., Chakrabarti, C. L. and Schramm, L. L.: 1975, Can. J. Chem. 53, 661.
Hem, J. D. and Duram, W. H.: 1973, J. Amer. Water Works Ass. 65, 562.
Hering, H. G. and Morel, F. M. M.: 1988, Environ. Sci. Technol. 22, 1234.
Hildebrand, E. E. and Blum, W. E.: 1974, Naturwissenschaften 61, 169.
Huang, C. P., Rhoads, E. A. and Hao, O. J.: 1988, Wat. Res. 22, 1001.
Kaštelan-Macan, M. and Petrovi´c, M.: 1995, Wat. Sci. Technol. 32, 349.
Kašelan-Macan, M. and Petrovi´c, M.: 1996, Wat. Sci. Technol. 34, 259.
Kononova, M. M. and Berlachikova, N. P.: 1960, Soviet Soil Sci. 4, 1149.
Leppard, G. G., Buffle, J. and Baudat, R.: 1986, Wat. Res. 20, 185.
McKeague, L. A., Ross, G. J. and Gamble, D. S.: 1978, in W. C. Mahaney <nt>(ed.)</nt>, Quaternary Soils, Geo Abstracts, Norwich, p. 27.
Murphy, E. M., Zachara, J. M. and Smith, S. C.: 1990, Environ. Sci. Technol. 24, 1507.
Nyffeler, U. P., Li, Y. H. and Santschi, P. H.: 1984, Geochim. Cosmochim. Acta 48, 1513.
Oscik, J.: 1982, Adsorption, Ellis Horwood Ltd., Chichester, p. 42.
Rashid, M. A. and King, L. H.: 1970, Geochim. Cosmochim. Acta 34, 193.
Rebhun, M., De Smedt, F. and Rwetabula, J.: 1996, Wat. Res. 30, 2027.
Schlautman, M. A. and Morgan, J. J.: 1993, Environ. Sci. Technol. 27, 2523.
Schnitzer, M. and Kerndorff, H.: 1981, Water, Air, and Soil Pollut. 15, 97.
Smith, R. W. and Jenne, E. A.: 1991, Environ. Sci. Technol. 25, 525.
Stumm, W., Wehrli, B. and Wieland, E.: 1987, Croat. Chem. Acta 60, 429.
Thurman, E. M.: 1986, Organic Geochemistry of Natural Waters, Nijhoff/Junk Publishers, Dordrecht.
Tipping, E.: 1981, Geochim. Cosmochim. Acta 45, 191.
Van Cappellen, P., Charlet, L., Stumm, W. and Wersin, P.: 1993, Geochim. Cosmochim. Acta 57, 3505.
Zhou, J. L., Rowland, S., Fauzi, R., Manotoura, C. and Braven, J.: 1994, Wat. Res. 28, 571.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Petrović, M., Kaštelan-macan, M. & Horvat, A.J.M. Interactive Sorption of Metal Ions and Humic Acids onto Mineral Particles. Water, Air, & Soil Pollution 111, 41–56 (1999). https://doi.org/10.1023/A:1005084802830
Issue Date:
DOI: https://doi.org/10.1023/A:1005084802830