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Surface fractal dimension of thermally treated peat soils from adsorption isotherms of nitrogen
Author(s) -
Sokołowska Zofia,
Hajinos Mieczysław,
Hoffmann Christian,
Renger Manfred,
Sokołowski Stefan
Publication year - 2000
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/1522-2624(200008)163:4<441::aid-jpln441>3.0.co;2-j
Subject(s) - chemistry , fractal dimension , adsorption , soil water , peat , nitrogen , analytical chemistry (journal) , surface roughness , thermodynamics , fractal , chromatography , physics , soil science , mathematics , organic chemistry , geology , mathematical analysis , ecology , biology
Adsorption isotherms of nitrogen at 80 K were measured on thermally modified peat soils. The isotherms were used to evaluate the surface fractal dimension from the Frenkel‐Halsey‐Hill equation. We also tested if surface characteristics were correlated to the water holding capacity index, which characterizes the degree of the secondary transformation of peat soils. In most cases the thermal treatment lowered the value of the surface fractal dimension, i.e. diminished the roughness of the part of the surface that adsorbs nitrogen molecules.