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226 results on '"Szewczuk-Karpisz, Katarzyna"'

43. Green Synthesis and Efficient Adsorption: Na-X Zeolite vs. C/Mn/SiO 2 Composite for Heavy Metals Removal.

Author

Medykowska, Magdalena, Wiśniewska, Małgorzata, Szewczuk-Karpisz, Katarzyna, Galaburda, Mariia, Oranska, Olena, and Panek, Rafał

Subjects
HEAVY metals, METALLIC composites, CARBON composites, POROUS materials, ACRYLIC acid, ZEOLITES
Abstract

The studies aimed to test the adsorption capacity of two silica-enriched porous materials, synthetic Na-X zeolite and Mn-containing carbon composite, towards Pb(II) and Zn(II) ions in single and mixed systems and in the presence of diclofenac (DCF) and (or) poly(acrylic acid) (PAA). The synthetic zeolite was characterized by a well-developed surface area of 728 m2/g and a pore diameter of 1.73 nm, while the carbon composite exhibited 268 m2/g and 7.37 nm, respectively. Na-X was found to be more efficient than the carbon composite (75–212 mg/g) in adsorbing heavy metal ions in both single and bimetallic systems (322–333 mg/g). In turn, the C/Mn/SiO2 composite was more effective in removing Pb(II) ions from the systems that simultaneously contained DCF or PAA (480 and 476 mg/g, respectively). The Na-X zeolite demonstrated the greatest stability in all the systems studied. The highest stability was observed in the DCF + Pb(II) mixture, in contrast to the carbon composites where the stability was much lower. To evaluate the possibility of regeneration of the solids, HCl proved to be the best desorbent for heavy metal ions (efficiency of 99%). In general, both adsorbents offer promising potential for solving environmental problems. [ABSTRACT FROM AUTHOR]

Published
2024
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44. Study on hydrophysical and chemical parameters of Polish and Slovak soils modified with zeolitic additives.

Author

GRYGORCZUK-PŁANETA, Katarzyna, VITKOVÁ, Justína, TOMCZYK, Agnieszka, PANEK, Rafał, BOTKOVÁ, Natália, and SZEWCZUK-KARPISZ, Katarzyna

Subjects
SOIL ecology, CLIMATE change, HYDROLOGY, ZEOLITES
Abstract

Application of soil modifiers is a widely used practice in agriculture to improve soil quality in support of good agricultural practices. This paper presents an assessment of the effect of zeolite modifiers combined with four soils of Polish and Slovakian origin on their hydrophysical properties. Under laboratory conditions, the characterization of the applied soil additives was carried out along with particle soil analysis. In addition, the prepared soil mixtures were examined using contact angle and saturated hydraulic conductivity. The results suggest that the increase in hydrophobicity occurred mainly after the application of fly ash, and the values for Polish Silty clay soil and Slovak soils: Sandy soil, Silt loam soil, and Silty clay soil compared to the control changed from 73.02° to 96.22°; 8.67° to 24.88°; 29.23° to 33.94° and 19.9° to 26.16° respectively. The increase in hydrophobicity could be explained by the higher CaO content of the high-carbon fly ash compared to the other materials. The parameters of saturated hydraulic conductivity were reduced after the application of all zeolite materials in the case of Polish Silty clay and Slovak Sandy soils. By filling the space between the soil particles, the porous soil additives decreased the hydraulic conductivity. In Slovak soils such as Silty loam soil and Silty clay soil, the opposite effect was observed. The soil additives increased the number and size of pores, which resulted in faster filtration of water and thus an increase in the saturated hydraulic conductivity value. [ABSTRACT FROM AUTHOR]

Published
2024
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