Assessment of factors influencing potassium content in osier pellets
2013
Platace, R., Latvian Academy of Agricultural and Forestry Sciences, Riga (Latvia) | Adamovics, A., Latvian Academy of Agricultural and Forestry Sciences, Riga (Latvia) | Gulbe, I., Latvian Academy of Agricultural and Forestry Sciences, Riga (Latvia)
Use of the crop biomass in the energy production is one of the preconditions to avoid ecological disasters in future and to compensate growing shortage of fossil energy sources. Ash is the non-combustible component of biomass, and high content thereof leads to fouling problems. Biomass fuels tend to have high ash and potassium content, and as a result ash melts at lower temperatures and leads to dross that can obstruct furnace elements and cause their damage. Pellets prepared within the research had different proportions (1/3, 1/1, 3/1) of reed canary grass variety “Marathon” and energy wood – osier. The research indicated the lowest potassium content (0.34 %) in osier biomass, while the highest (0.67 %) – in reed canary grass biomass. When osier is added to the reed canary grass pellets the potassium content rises. The lowest potassium content was observed in pellets having biomass proportion 1/3 – it is the most suitable for the pellet production. As compared to the pellets made solely from osier, the potassium content in pellets made from reed canary grass/osier in mentioned proportion increased by 24.75 % and combustion ability decreased by 0.09 %. The aim of the study was evaluation of factors influencing potassium content in energy crop pellets.
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