Abstract
Water vapor adsorption isotherms were measured for samples of loessial soil clays modified by removing organic matter and Fe and Al compounds. The isotherms were analyzed by the exponential adsorption isotherm equation. The distribution functions of adsorption energy, average adsorption energies, and surface areas were evaluated simultaneously. The surface areas were the highest for samples after organic matter removal and the lowest when all considered components were removed. Values of the average adsorption energies decreased consecutively after each of the subsequent removal steps while the energy distributions became narrower, indicating in general less variety in surface adsorbing centers.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.References
Brogowski, Z., Dobrzaǹski, B., and Kocoǹ, J. (1979) Application of scanning microscopy in studies of the mechanical fractions of soils: Pol. J. Soil Sci. 11, 73–76.
Cerofolini, G. F. (1972) Multilayer adsorption on heterogeneous surfaces: J. Low Temperature Phys. 6, 473–486.
Dobrzaǹski, B., Dechnik, I., and Stawiǹski, J. (1972) The organic substance as a factor determining the soil surface area: Polish J. Soil Sci. IV 1, 326–331.
Hill, T. L. (1964) An Introduction to Statistical Thermodynamics: McGraw-Hill, Massachusetts, 197–220.
House, W. A. and Jaycock, M. J. (1978) A numerical algorithm for the determination of the adsorptive energy distribution from isotherm data: J. Coll. Polymer Sci. 256, 52–61.
House, W. A., Jaroniec, M., Bräuer, P., and Fink, P. (1981) Surface heterogeneity effects in nitrogen adsorption on chemically modified aerosils: Thin Solid Films 85, 77–86.
Jackson, M. L. (1965) Free oxides, hydroxides and amorphous silicates: in Methods of soil analysis, C. A. Black, ed., American Society of Agronomy Inc. Publishers, Agronomy Series No. 9, Madison, Wisconsin, 578–601.
IMSL (1989) IMSL Stat Library, Fortran subroutines for statistical analysis, version 1.1, vol. 1, IMSL. Houston, Texas, 193–207.
Jaroniec, M., Rudziǹski, W., Sokołowski, S., and Smarzewski, R. (1975) Determination of energy distribution function from observed adsorption isotherms: J. Coll. Polymer Sci. 253, 164–166.
Jaroniec, M., Sokoiowski, S., and Cerofolini, F. G. (1976) Adsorption parameters and the form of the energy distribution function—A discussion: Thin Solid Films 31, 321–328.
Jaroniec, M. (1983) Physical adsorption on heterogeneous solids: Adv. Colloid Interface Sci. 18, 149–225.
Jaroniec, M. and Bräuer, P. (1986) Recent progress in determination of energetic heterogeneity of solids from adsorption data: Surf Sci. Rep. 6, 65–117.
Keren, R. and Shainberg, I. (1979) Water vapour isotherms and heats of immersion of Na/Ca montmorillonite system. II. Mixed systems. Clays and Clay Minerals 27, 145–151.
Koopal, L. K. and Vos, K. (1985) Calculation of the adsorption energy distribution from the adsorption isotherm by singular value decomposition: Colloids and Surfaces 14, 87–95.
Kunze, G. W. (1965) Pretreatment for mineralogical analysis: in Methods of Soil Analysis, C. A. Black, ed., American Society of Agronomy Inc. Publishers, Agronomy Series No. 9, Madison, Wisconsin, 568–577.
Os̊cik, J. (1982) Adsorption: Ellis Horwood Ltd., Chichester, 110–117.
Paterson, E. and Stawiǹski, J. (1979) The use of a vacuum microbalance in the investigation of the kinetics of water vapour adsorption on soil components: Pol. J. of Soil Sci. 12, 105–111.
Patrykiejew, A., Sokołowska, Z., and Sokołowski, S. (1990) A note on the BET method for the surface area determination of soils: Z. Probl. Post. Nauk Roln. 338, 275–288.
Sokołowska, Z., Patrykiejew, A., and Sokołowski, S. (1988) Application of the exponential isotherm equation to description of adsorption in soils: Pol. J. Soil Sci 21, 191–201.
Sokołowska, Z. (1989a) On the physical adsorption on geometrically and energetically heterogeneous solid surfaces: Z. Phys. Chem. (Leipzig) 270 (6), 1113–20.
Sokołowska, Z. (1989b) On the role of energetic and geometric heterogeneity in sorption of water vapour by soils: Application of the fractal approach: Geoderma 45, 251–265.
Sokołowska, Z. (1989c) The role of the surface heterogeneity of the adsorption processes in soils: Ossolineum, Warsaw, 165 pp. (in Polish).
Sokołowska, Z., Sokołowski, S., Ganev, S., and Arsova, A. (1992) Adsorption of water vapour on eutric fluvisols as governed by energetic heterogeneity of soil samples: Geoderma 52, 59–72.
Tarasevich, J. I. and Ovscharenko, F. D. (1975) Adsorption on clay minerals: Naukova Dumka, Kiew, 42–57 (in Russian).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sokołowska, Z., Jòzefaciuk, G., Sokołowski, S. et al. Adsorption of Water Vapor by Soils: Investigations of the Influence of Organic Matter, Iron, and Aluminum on Energetic Heterogeneity of Soil Clays. Clays Clay Miner. 41, 346–352 (1993). https://doi.org/10.1346/CCMN.1993.0410310
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1346/CCMN.1993.0410310