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	Photocatalytic Processes for Degradation of Endocrine Disruptors from Wastewater Spáčilová, Lucie ; Maléterová, Ywetta ; Krejčíková, Simona ; Cajthaml, Tomáš ; Šolcová, Olga The efficiency of the titania oxide thin layers on the glass beads for degradation of 17- ethynylestradiol and bisphenol A in water solution was studied in the batch disposal and consequently in the continual micro-photo reactor. Experiments were performed regarding to the efficiency of the process and evaluation in the term of toxicity of reaction products. Fulltext: content.csg - PDF Plný tet: SKMBT_C22012102414082 - PDF Detailed record
	Super/Subcritical Fluid Extractions for Synthesis of Porous Metal Oxides Matějová, Lenka ; Matěj, Z. ; Cajthaml, Tomáš ; Šolcová, Olga In this study the influence of individual post-treatment steps on the crystallinity, purity and textural properties of prepared metal oxides - TiO2, ZrO2, TiO2-ZrO2 etc. in powdery form (aerogels) – has been studied. Titania and zirconia organogels were prepared as reaction semi-products of the sol-gel process controlled in reverse micellar solution of nonionic surfactant Triton X-114. in combination with a) subcritical fluid extractions (using water and subsequently methanol like pressurized solvents, SubWE/PFE) and b) calcination. The effect of various extraction conditions on textural and structural properties of metal oxides has been investigated. Besides that the reproducibility of these material properties has been also observed. Detailed record
	Modified Titania Nanolayers for Photodegradation Applications Krejčíková, Simona ; Šolcová, Olga ; Maléterová, Ywetta ; Cajthaml, Tomáš This study is focused on preparation and characterisation of the specially designed photoactive materials and their modified versions suitable for photo-processes carried out upon illumination in the visible and UV regions of the light spectrum. Decomposition of a resistant contaminant 4 - chlorophenol was chosen as the representative reaction for our study. Detailed record
	Biodegradation of PCBs by a ligninolytic fungus Cajthaml, Tomáš ; Kožená, Lenka ; Filipová, Alena ; Svobodová, Kateřina Although production and use of polychlorinated biphenyls has been prohibited for many years, the compounds still represent a serious problem for the environment. The objective of this work was to test abilities of PCB degradation of several representatives of ligninolytic fungi: Phanerochaete chrysosporium, Pleurotus ostreatus, Trametes versicolor, Irpex lacteus, Bjerkandera adusta, Picnoporus cinnabarinus, Dichomitus squalens, Phanerochaete magnolia, Panus tigrinus in two types of nutrient media i.e. low nitrogen mineral and complex. Detailed record
	CHARACTERIZATION OF MICROBIAL POPULATIONS DURING COMPOSTING OF CONTAMINATED SOIL Petránková, Mirka ; Čechová, Zuzana ; Brennerová, Mária ; Cajthaml, Tomáš Bioremediation is an indisputably advantageous approach to cleaning up contaminated soils. The efficiency of bioremediation depends on a number of factors, the most important of which are the ability of the bioremediative organism to degrade the target pollutants, the pollutant’s intrinsic properties (aqueous solubility being of key importance), and soil parameters. Composting has been recently shown to be efficient for remediation of soils contaminated e.g. with PAHs Detailed record
	Comparison of ecotoxicity and persistent organic pollutant bioavailability in real contaminated soil, using selective supercritical fluid extraction (SFE) Čvančarová, Monika ; Křesinová, Zdena ; Cajthaml, Tomáš The amount of bioavailable polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) in contaminated soil was estimated using Supercritical fluid extraction (SFE). The toxicity of contaminated soil was determinated using different organisms: earthworms Eisenia fetida, duckweed Lemna minor, crustacean Heterocypris incongruens, bioluminiscent bacterium Vibrio fischeri and worms Enchytraeus crypticus. There was a different amount of bioavailable fraction in each soil. There was close relationship between ecotoxicity and bioavailability in PAHs contaminated soil Detailed record
	Microbial degradation of 17alfa-ethinylestradiol and bisphenol A Křesinová, Zdena ; Svobodová, Kateřina ; Moeder, M. ; Cajthaml, Tomáš 17ethinylestradiol (EE2) and bisphenol A (BA) are endocrine disrupting compounds (ED). ED have a negative influence on animals and human hormonal systems animals, and thus they are serious envronmental contaminants. This work was focused on biodegradtion of EE2 and BA using 8 white rot fungi strains in liquid media. Pleurotus ostreatus, Pycnoporus cinnabarinus and Irpex lacteus were able to remove both ED under detection limit (initial concetration was 10 ppm) during the first three days of cultivation. In contrary, Phanerochaete chrysosporium was not able to degrade both ED durin 2 weaks long cultivation Detailed record
	Screening of fungi are able to degradation of chlorobenzoates Muzikář, Milan ; Křesinová, Zdena ; Svobodová, Kateřina ; Cajthaml, Tomáš Degradation of chlorobenzoates (CBA), which are the intermediates by degradation of polychlorinated biphenyls, with fungi capable degrade lignin. These fungi are called ligninolytic or white-rot fungi. Biodegradation was tested in rich medium. The cultures were Bjerkandera adusta, Dichomitus squalens, Irpex lacteus, Phanerochaete chysosporium, Pleurotus ostreatus, Pycnoporus cinnabarinus, Pycnoporus magnoliae a Trametes versicolor. The harvesting was performance 1., 2. and 3. week. Via ethylacetate we obtained the organic extract which was analyzed on HPLC. The start concentration was 10 ppm (10 μg/ml). We tested 12 substances of CBA Detailed record
	Comparison of in vitro tests for measurement of estrogenity of chlorinated compounds and their use in the evaluation of biodegradation of chlorbenzoates by the fungus Panus tigrinus Svobodová, Kateřina ; Covino, S. ; Křesinová, Zdena ; Cajthaml, Tomáš Recently, contamination of the environment by endocrine disruptive compounds, toxicity of these chemicals and their biodegradability are widely studied. This work is focused on estrogenity of chlorinated phenols and chlorbenzoic acids that represent potential degradation products of PCB compounds. Two different yeast bioassays for evaluation of estrogenity based on recombinated strains of Saccharomyces cerevisie were compared in this work. Estrogenic activity of chlorbenzoic acids varied with the chemical structure of chemicals. A mixture of chlorbenzoates (initial concentration 10 ppm) was degraded by a ligninolytic fungus Panus tigrinus in liquid cultures. Chemicals resulting from degradation were tested for their estrogenity, however, results indicated that the test responses were inhibited probably by some compounds present in the fungal culture liquid Detailed record
	Enzyme-catalysed processes in the spoil heaps after brown coal mining: effects of site age, vegetation and seasonality Baldrian, Petr ; Šnajdr, Jaroslav ; Valášková, Vendula ; Urbanová, Michaela ; Voříšková, Jana ; Popelářová, Petra ; Herinková, Jana ; Cajthaml, Tomáš ; Frouz, Jan Enzyme-catalysed processes in the spoil heaps after brown coal mining are affected by site age, vegetation composition and seasonality Detailed record

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