The mathematical modelling of Ca and Fe distribution in peat layers
2011
Teirumnieka, E., Rezekne Higher Education Institution (Latvia). Faculty of Engineering | Kangro, I., Rezekne Higher Education Institution (Latvia). Faculty of Engineering | Teirumnieks, E., Rezekne Higher Education Institution (Latvia). Faculty of Engineering | Kalis, H., Latvian Academy of Sciences, Riga (Latvia). Inst. of Mathematics;University of Latvia, Riga (Latvia) | Gedroics, A., University of Latvia, Riga (Latvia). Faculty of Physics and Mathematics
Bogs have been formed by an accumulation of peat - a light brown-to-black organic material, built up from partial decomposition of mosses and other bryophytes, sedges, grasses, shrubs, or trees under waterlogged conditions. The total peatlands area in Latvia covers 698 918 ha or 10.7% of the entire territory. Knowledge’s of peat metals content are important for any kind of peat using. Experimental determination of metals in peat is very long and expensive work. Using experimental data mathematical model for calculation of concentrations of metals in different points for different layers can help to very easy and fast to find approximately concentration of metals or trace elements. The results of the research show that concentrations of trace elements in peat are generally low. Concentrations differ between the superficial, middle and bottom peat layers, but the significance decreases depending on the type of mire. The mathematical model for calculation of concentration of metals in different points for different 3 layers in peat blocks is developed. As an example, mathematical models for calculation of Ca and Fe concentrations have been analyzed.
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