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Pilot-scale Operation of Electrocoagulation for Removal of Toxic Metals.
Krystyník, Pavel ; Mašín, P. ; Krušinová, Z. ; Klusoň, Petr
The process was tested in pilot-scale unit placed in movable container and operated in continuous regime. The results have shown that the removal efficacies are strongly dependent on the dose of coagulant, which is the most important and crucial parameters affecting performance of electrocoagulation and of course on other process parameters. It is also very reliant on contaminant content in treated effluent. An addition of flocculating agent was also tested on the improvements of process performance.
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22018100509391 - PDF
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Determination of the potential of process waters for metals recycling
Struňáková, Katarína ; Krystyník, Pavel (advisor) ; Jadrný, Josef (referee)
Incineration of municipal waste in incineration plants leads towards formation of many by- products, such as slug or fly ash. These by-products may contain specific amount of heavy metals. Acidic leaching enables to transfer of some of those metals into liquid phase from which they can be obtained by various methods, i.e. by electrodeposition.. This bachelor thesis is focused on the description of waste incineration process and treatment of solid residual which can potentially be used as a secondary raw material. Incineration plant with a capacity of 96 000 t/year simultaneously treats 27 t of Zinc annually. The economic value of this treated Zinc is about 1 700 000 CZK. In case of 80 % acidic extraction efficiency the price of treated Zinc is still more than 1 400 000 CZK. Thus there is a possibility of Zinc utilization as a secondary raw material.
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The influence of material composition and spatial arrangement on the properties of photoelectrochemical cells
Pachovská, Martina ; Krystyník, Pavel (referee) ; Dzik, Petr (advisor)
This diploma thesis deals with photoelectrochemical cells containing photoactive titanium dioxide anode and their use for photocatalytic degradation of organic compound from water solutions. The electrical properties of the produced photoelectrochemical cells were determined by the use of voltamperometric characteristics, the oxidation ability of the cells was monitored by measuring the fluorescence of the oxidative intermediates. To study these reactions, benzoic acid was used as the fluorescence probe for OH˙ radicals. The aim of the study was to study the influence of material composition and spatial arrangement of the cathode and the relationship between irradiation, current and rate of electrode processes.
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Photocatalytic activity of printed hybrid layers of titanium dioxide
Sýkorová, Kateřina ; Krystyník, Pavel (referee) ; Veselý, Michal (advisor)
The main aim of this thesis was to optimalise composition of the titanium dioxide with a silica binder deposited on a PET foil. Emphasis was put on achieving maximum possible adhesion and hardness of the layer and the effect on photocatalytic activity. For the evaluation of photocatalytic activity comparative experiments with prepared layers were performed. Benzoic acid, dimethyl sulfoxide and azo dye Acid Orange 7 were used as model pollutants. Photocatalytic activity was investigated using UV-VIS spectrophotometry, formal rate constants and degree of conversion were also determined. The study results can be used for removing water pollutants from the water solution.
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