Econtechmod. – 2016. – Vol. 5, No. 2

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Impact of the biomass pyrolysis parameters on the quality of biocarbon obtained from rape straw, rye straw and willow chips
(Commission of Motorization and Energetics in Agriculture, 2016) Saletnik, B.; Bajcar, M.; Zaguła, G.; Czernicka, M.; Puchalski, C.
In the article the results of studies conducted regarding the thermal processing of rape straw, rye straw and willow chips applying various parameters of the pyrolysis process are presented. Samples of biomass were subject to thermal processing at various temperatures and process durations, assessing the impact of the applied conditions on physicochemical parameters of the obtained pyrolysis products. The contents of phosphorus, potassium, magnesium, carbon and nitrogen were analysed. The studies have indicated that the pyrolysis process can be used to refine biomass, among others obtained from straw and chips, in the context of using it for fertilization. Modification of the pyrolysis process parameters (temperature, time) significantly impacted the concentration of the analysed macroelements. It has been stated that the highest content of phosphorus, potassium and magnesium in biocarbon (rape straw, rye straw and willow chips) can be obtained performing pyrolysis at the temperature of 5000°C for 10 minutes. A significant impact of the pyrolysis parameters – temperature and time on the total content of macroelements in the obtained biocarbon was observed. The highest contents of phosphorus, potassium and magnesium were observed in the case of biocarbon obtained at the temperature of 5000 °C during 10 minutes, while the temperature of 4000 °C and duration of 10 minutes allowed to obtain the maximum content of carbon and nitrogen.
Mineral components analysis of selected dried herbs
(Commission of Motorization and Energetics in Agriculture, 2016) Zaguła, G.; Fabisiak, A.; Bajcar, M.; Czernicka, M.; Saletnik, B.; Puchalski, C.
This study includes the content of water, ash and volatiles in dried herbs like Oregano, Basil and de Provance. Moreover, amounts of H, N and C, and their calorific value were measured. The content of the following elements (Al, Ba, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, S, Sr, Zn) in the tested herbs were established using the ICP-OES method. Basil leaves had the highest nitrogen and ash content at the level 4.5 % and 15,9 %. These herbs were characterized by a darker color as compared to oregano. Basil contained the richest source of Ca, K, Mg and P, while the lowest was found in herbs de Provence. The best source of Ca, K, Mg and P was basil, while their lowest amount was found in herbs de Provence (containing a mixture of different herbs), which mostly likely was the reason for the low amount of macro- and micro-components.

Econtechmod. – 2016. – Vol. 5, No. 2

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