Modeling of oxygen transport and pyrite oxidation in acid sulphate soils
| Autor: | K. Nugroho, J.J.B. Bronswijk, Jan E. Groenenberg, I. B. Aribawa, C.J. Ritsema |
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| Předmět: |
Environmental Engineering
zuurstof Inorganic chemistry Management Monitoring Policy and Law engineering.material complex mixtures acid soils zure gronden soil models chemistry.chemical_compound Organic matter Sulfate Leaching (agriculture) Waste Management and Disposal modellen Water Science and Technology chemistry.chemical_classification research zwavel Macropore Oxygen transport Soil chemistry onderzoek Pollution bodem chemistry sulfur kattekleigronden Soil water engineering Pyrite oxygen acid sulfate soils |
| Zdroj: | Scopus-Elsevier Journal of Environmental Quality 22 (1993) 3 |
| ISSN: | 0047-2425 |
| Popis: | Drainage and aeration of previously submerged acid sulphate soils could lead to oxidation and acidification of the soil and to related problems such as high Fe and Al concentrations in the soil solution. Agricultural production on these acidified soils is low. Furthermore, leaching of acid and toxic compounds from the soil to surface waters may cause environmental damage, such as degradation of ecologically valuable wetlands. A computer simulation model was developed to compute the rate and magnitude of pyrite oxidation in pyritic deposits such as acid sulphate soils, and the resulting acidity, soluble Fe and sulphates produced. The model includes vertical gaseous O 2 diffusion from the atmosphere into the soil macropores, lateral diffusion of dissolved O 2 into the soil matrix, and O 2 consumption inside the soil matrix by pyrite oxidation and organic matter decomposition [...] |
| Databáze: | OpenAIRE |
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