Abstract
In the present paper, determination of isotherms of the exchange reaction between Cu(II) and clays is presented, verifying again the “cation exchange—surface precipitation” isotherm worked out formerly in our laboratory. A modified BET equation was applied to treating the experimental data and describing the new isotherm. In addition, the mechanism of the effects of organics are further discussed and verified. Based on the isotherm equations and the estimates of the average area occupied by a single molecule on the surface, we put forward a new hypothesis which differs from the current one of “organic film”.
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Anderson, M. A. and Rubin, A. J., 1981. Adsorption of Inorganics at Solid-Liquid Interfaces. ANN ARBOR Science Publishers, Inc., Ann Arbor, Michigan, pp. 357.
Barrow, G. M., 1973. Physical Chemistry, McGraw-Hill, Inc., New York, pp. 843.
Brunauer, S., Emmett, P. H., and Teller, E., 1938. Adsorption of gases in multimolecular layer.J. Amer. Chem. Soc. 60: 309–319.
Chang Chenping and Liu Liansheng, 1974. A study of the theory of stepwise equilibrium of inorganic ion exchange in seawater.Scientia Sinica 17: 486–503.
Chang Chenping and Liu Liansheng, 1978. A study of the theory of the liquid-solid distribution of elements in seawater II. The theory of distribution of equilibrium of minor elements on hydrous metal oxide in seawater.Oceanologia et Limnologia (in Chinese)9: 151–167, andin Collected Oceanic Works5 (1982): 67–80 (in English).
Emmett, P. H., 1953. Catalysis Vol. I, Reinhod Publishing Corp., pp. 360.
Grim, R. E., Applied Clay Mineralogy, McGraw-Hill, Inc., New York, Toronto, London, pp. 360.
Gu Tiren, 1982. The application of the modified BET equation to multimolecular adsorption from solution.J. Colloid and Interface Sci. 85: 601–603.
Hansen, R. S., Fu Ying and Bartell, F. G., 1949. Multimolecular adsorption from binary liquid solutions.J. Phys. Chem. 53: 769–785.
Horne, R. A., 1969. Marine Chemistry. Wiley Interscience, New York, 568 pp.
Hunter, K. A. and Liss, P. S., 1979. The surface charge of suspended particles in estuarine and coastal water,Nature (London)282 (5741): 823–825.
Liu Liansheng, Chang Chenping, Li Kewei, Chang Xingguo and Chen Riguang, 1980. A study of the mutual non-interference effect of inorganic ion exchange in seawater I. Ion exchange reactions of U(VI), Cr(III), Ca, Mg, with hydrous titanium oxide in seawater.Journal of Shandong College of Oceanology 10(2): 61–80. (in Chinese)
Neihof, R. A. and Loeb, G. I., 1972. The surface charge of particulate matter in seawater.Limnol. Ocenogr. 17: 7–16.
Neihof, R. A. and Loeb, G. I., 1974. Dissolved organic matter in seawater and the electric charge of immersed surface.J. Mar. Res. 32: 5–12.
Parks, G. A., 1975. Adsorption in the Marine Environment. Chemical Oceanography, (J. P. Riley and G. Skirrow, ed.), Vol. 1, 2nd Edition, Academic Press, London, pp. 241–308.
Sun Mingyi, Zhang Zhengbin (Chang Chen-ping), Liu Liansheng, 1984. A new chemical model of trace elements partitioned on clay minerals in seawater.Acta Oceanologica Sinica 6(4): 461–470.
Wu Yuduan, Chen Cimei, Chen Yuwang and Wang Longfa, 1982. On the mechanism of the harmful heavy metal transport in Changjiang estuary II. Thermodynamics and kinetic for the process of fixing heavy metals on illitic, montmorillonitic and kaolinitic clays.Acta Oceanological Sinica 4 (3): 303–314.
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Guosheng, L., Zhengbin, Z., Liansheng, L. et al. Effect of organics (fulvic acid and amino acids) on the interaction between Cu(II) and clays in sea water II. Isotherms and isotherm equations. Chin. J. Ocean. Limnol. 3, 235–250 (1985). https://doi.org/10.1007/BF02906798
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DOI: https://doi.org/10.1007/BF02906798