Fractal Approach to Adsorption/Desorption Processes on Environmental Surfaces

Sokołowska, Z.; Sokołowski, S.

doi:10.1002/9780470511206.ch6

Cited by 5 publications

(3 citation statements)

References 96 publications

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“…This is particularly interesting as one can assume that surface density of charge is highly variable on a surface of higher fractal dimension and those microspatial variations reinforce the van der Waals regime of water adsorption. Even though both regimes are partially superimposed (Sokolowska and Sokolowski, 2008), the drier state of the soil at PWP also needs to be considered. For example, Hillel (1980) considers that under drier condition soil particles approach each other very closely and the van der Waals regime is the dominant mechanism of water adsorption.…”

Section: Resultsmentioning

confidence: 99%

The relationship between surface fractal dimension and soil water content at permanent wilting point

Ghanbarian-Alavijeh

Millán

2009

Geoderma

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Section: Resultsmentioning

confidence: 99%

The relationship between surface fractal dimension and soil water content at permanent wilting point

Ghanbarian-Alavijeh

Millán

2009

Geoderma

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“…The value of D is always between 2 and 3, the former indicating a perfectly smooth surface, and the latter a surface that fills the space completely. Because gas molecules are suitable “yardsticks” to probe the nano- to microscale surface structures, a number of theories have been proposed for determining D based on experimental adsorption isotherms 11 .…”

Section: Resultsmentioning

confidence: 99%

Surface fractal dimension, water adsorption efficiency and cloud nucleation activity of insoluble aerosol

Laaksonen

Malila

Nenes

et al. 2016

Sci Rep

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Surface porosity affects the ability of a substance to adsorb gases. The surface fractal dimension D is a measure that indicates the amount that a surface fills a space, and can thereby be used to characterize the surface porosity. Here we propose a new method for determining D, based on measuring both the water vapour adsorption isotherm of a given substance, and its ability to act as a cloud condensation nucleus when introduced to humidified air in aerosol form. We show that our method agrees well with previous methods based on measurement of nitrogen adsorption. Besides proving the usefulness of the new method for general surface characterization of materials, our results show that the surface fractal dimension is an important determinant in cloud drop formation on water insoluble particles. We suggest that a closure can be obtained between experimental critical supersaturation for cloud drop activation and that calculated based on water adsorption data, if the latter is corrected using the surface fractal dimension of the insoluble cloud nucleus.

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“…For many years they have investigated the adsorption on soils, see e.g., [54][55][56]. However, one of the valuable contributions was in developing a new approach to analyse the mass fractal dimension of soils, this issue being of utmost importance for environmental science [57,58].…”

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confidence: 99%