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vol. 18, nr. 2 (2011)
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Porosity of mixtures of a loess-like soil with keratin-bark-urea compost
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Zofia Sokołowska, Mieczysław Hajnos, Patrycja Boguta
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| (get PDF )
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Institute of Agrophysics PAS, Doświadczalna 4, 20-290 Lublin, Poland |
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vol. 18 (2011), nr. 2,
pp. 457-467
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abstract:
The porosity of mixtures made from a loess-like soil and keratin-bark-urea (KKM) compost was investigated. The keratin-urea-bark compost was added to the soil in doses ranging from 5, 10, 20, 50 to 94 weight percent. The porosity of the mixtures were measured using a Carlo Erba Model 2000 mercury porosimeter. Fractal dimension from mercury intrusion data was calculated by the Neimark method. The total pore volume of the mixtures ranged from 92.5 to 146.8 mm3 g-1. The total amount of mercury intruded into the pores of a mixtures did not change proportionally with the KKM dose. The pore size distributions for the mixture of the brown soil + KKM and for KKM alone exhibit a single peak, a rather narrow peak of different height, which may suggest uniform structure of the samples. Surface fractal dimension of the mixture samples was in the range from 2.539 to 2.669. The above values point to geometric non-uniformity of those samples.
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keywords:
loess-like soil, keratin-bark-urea compost (KKM), pore volume, pore size distributions (PSD), fractal dimension
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original in:
Polish
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