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Monitoring the effectiveness of selected adsorbents in removing AOX from water
Rutarová, Natálie ; Kotzurová, Iveta (referee) ; Repková, Martina (advisor)
The diploma thesis was created in cooperation with the company Art Carbon and is focused on monitoring the effectiveness of ART SAND adsorbents in removing AOX from water. The theoretical part provides an overview and basic characteristics of AOX, their impact on the environment and the possibility of their removal. The experimental part is focused on the study of the effectiveness of selected adsorbents with the subsequent use of high performance liquid chromatography (HPLC) with UV detection. Two ART SAND, ASSP50 and ASPP50-X adsorbents, supplied by ArtCarbon, were selected 2,4-dichlorophenol and 2,6-dichlorophenol to monitor adsorption.
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Monitoring the effectiveness of selected adsorbents in removing AOX from water
Rutarová, Natálie ; Kotzurová, Iveta (referee) ; Repková, Martina (advisor)
The diploma thesis was created in cooperation with the company Art Carbon and is focused on monitoring the effectiveness of ART SAND adsorbents in removing AOX from water. The theoretical part provides an overview and basic characteristics of AOX, their impact on the environment and the possibility of their removal. The experimental part is focused on the study of the effectiveness of selected adsorbents with the subsequent use of high performance liquid chromatography (HPLC) with UV detection. Two ART SAND, ASSP50 and ASPP50-X adsorbents, supplied by ArtCarbon, were selected 2,4-dichlorophenol and 2,6-dichlorophenol to monitor adsorption.
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Magnetic modification of microbial cells
BALDÍKOVÁ, Eva
Baker´s yeast (Saccharomyces cerevisiae) were magnetically modified by three different methods, namely, surface modification by magnetic fluid, entrapment of cells into alginate and covalent immobilization on particles of magnetic chitosan. The ability of H2O2 decomposition was tested for all types of modification. It is apparent that the most amount of hydrogen peroxid was degraded by magnetic fluid - modified cells (84-95%), while the efficiency of cell which were modified by other methods was much lower (40-60%). Thanks to immobilization on particles of magnetic chitosan, we made completely new type of magnetic material, which was tested for adsorption of Crystal violet and Safranin O. It was founded that magnetic chitosan adsorbs no dyes, so all adsorption belongs to immobilized yeast. The maximum adsorption capacities were determined using Langmuire isotherm at 69,4 mg/g for Crystal violet and 99,0 mg/g for Safranin O.
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