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Influence of the Virginia Fanpetals Cultivation Method on Calorific Value, Content and Dynamics of Macronutrient Uptake

Możdżer Ewa, Siwek Hanna, Włodarczyk Małgorzata, Bury Marek, Kitczak Teodor

Journal of Ecological Engineering

2020

Vol. 21, nr 5

120--128

A one-factor field experiment was carried out in 2016–2019 at the Experimental Station in Lipnik near Stargard. The aim of the study was the cultivation of Virginia fanpetals in two systems of sowing and planting, determining the impact of the cultivation system on the yield quantity, calorific value, moisture, content and dynamics of the macronutrient uptake by Virginia fanpetals, calculation of the relationship between the yield and NPK intake, calorific value and yield as well as the analytical moisture content. Studies have shown that the method of establishing the plantation (sowing, planting) did not have any significant impact on the calorific value of Sida. A statistical analysis indicated that the method of establishing the plantation (sowing, planting) did not have a significant impact on the formation of the nitrogen, phosphorus and potassium contents in the biomass, while it was significant for magnesium and sulfur. More macroelements was contained in the Virginia fanpetals biomass from sowing compared to planting. The total uptake of macronutrients by the Virginia fanpetals biomass was higher in the planting cultivation system. In the system of planting cultivation, in the first year of plantation operation, higher dynamics of the N, P, K, Mg and S uptake by the Virginia fanpetals biomass compared to the sowing system was found. A correlation analysis showed very high degree of correlation between the size of Virginia fanpetals biomass yield as well as the nitrogen and phosphorus uptake.

Adsorpcja wybranych jonów metali wielowartościowych na matrycach alginianowych sieciowanych jonami żelaza(III)

Siwek Hanna, Pawelec Krzysztof, Włodarczyk Małgorzata

Przemysł Chemiczny

2019

T. 98, nr 1

129--132

Jony metali ciężkich (Cu²⁺, Zn²⁺, Cd²⁺ i Pb²⁺) adsorbowano na matrycy alginianowej sieciowanej jonami żelaza(III) z roztworu w wodzie destylowanej i w odcieku z prasy osadów ściekowych. Kinetykę adsorpcji tego procesu badano w temp. 20°C przez 48 h. Adsorpcja była zgodna z modelem izotermy Freundlicha. Określono parametry równania kf i 1/n. Najwyższe wartości parametru kf stwierdzono dla jonów Pb²⁺ w wodzie destylowanej. Adsorpcja jonów Cu²⁺ Zn²⁺ oraz Cd²⁺ w wodzie odciekowej była większa niż w wodzie destylowanej.Pojemność sorpcyjna matrycy alginian/Fe³⁺ dla badanych jonów malała w kolejności Pb²⁺ > Cu²⁺ > Cd²⁺ > Zn²⁺.

Heavy metal ions (Cu²⁺, Zn²⁺, Cd²⁺ and Pb²⁺) were adsorbed from their soln. in distd. and seepage water from sewage treatment plant on alginate matrix crosslinked with Fe(III) ions. Kinetics of adsorption at 20°C for 48 h was studied. The adsorption followed the Freundlich isotherm model. The kf and 1/n equation parameters were detd. The highest values of kf parameter were found for Pb²⁺ ions in distd. water. Adsorption of Cu²⁺, Zn²⁺ and Cd²⁺ions in seepage water was higher than in distd. one. The sorption capacity of alginate/Fe³⁺ matrices to metal ions was arranged in series Pb²⁺ > Cu²⁺ > Cd²⁺ > Zn²⁺.