Offer of PhD works

Proposal for a biogas plant for VSB - TU Ostrava university campus

Supervisor: prof. Ing. Lucie Obalová, Ph.D.

Supervisor specialist: Ing. Jiří Rusín, Ph.D.

Program/Field: Process Engineering, FMME, VSB-TU Ostrava

Annotation

The work will bring new knowledge about the use of biodegradable waste in the area of VSB - TU Ostrava. The subject of the research is the effectiveness of small-scale energy production via anaerobic digestion of biowaste. Lab-scale methane production tests focused on the processing of "green organic waste" with "food bio-waste" will be carried out. Evaluation of the model studies results and literature data will result to the design of anaerobic bioreactor technology, biogas and digestate processing and utilization of the energy produced, which could be applied in the university campus.


Research of synthesis and applications of ionic liquids

Supervisor: prof. Ing. Lucie Obalová, Ph.D.

Supervisor specialist: doc. Ing. Petr Pánek, CSc.

Program/Field: Process Engineering, FMME, VSB-TU Ostrava

Annotation

Ionic liquids are organic salts with strongly ionic character. These commercially interesting substances are due to their environmentally friendly properties (negligible vapor pressure), referred to as "green solvents" or "green reaction medium". Furthermore, they have many other potential applications e.g. as fire retardants, plasticizers, biocides, dispersing agents or catalysts. As part of the work new methods of synthesis of selected ionic liquids for various applications and study the relationship between their physical-chemical properties, toxicity and their chemical constitution with regard to the type of anion and cation will be developed.


Simultaneous catalytic degradation of nitrogen oxides

Supervisor: prof. Ing. Lucie Obalová, Ph.D.

Program/Field: Process Engineering, FMMI, VSB-TU Ostrava

Annotation

Nitrogen oxides (N2O, NO, NO2) occur in the waste gases often simultaneously. For this reason, their simultaneous degradation would be preferred instead of currently used technologies, which operate under different conditions (temperature, catalyst). Experimental study of NO and N2O catalytic decomposition without reducing agent in the presence of catalysts containing selected transition metals and description of their physico-chemical properties by available analytic technics (chemical analysis, XRD, diffraction, physisorption of nitrogen, temperature programmed desorption and reduction etc.) will be the subject of Ph.D. work. The aim will be the evaluation of efficiency of studied materials, a proposal of reaction mechanisms and relationship between catalysts properties and their activity and selectivity.


Photocatalytic reactions for environmental protection

Supervisor: Ing. Kamila Kočí, Ph.D.

Supervisor specialist: Ing. Ivana Troppová, Ph.D.

Program/Field: Process Engineering, FMME, VSB-TU Ostrava

Annotation

Photocatalytic processes are particularly promising for the cleaning of air contaminated by pollutants. By using sunlight they can work even without fossil fuels. One of the key factors influencing the efficiency of photocatalytic reaction is a suitable choice semiconductor photocatalyst that is not only satisfying the energy band gap, but especially desirable position of the valence and conduction bands enabling the successful progress of the process. The goal will be the preparation of nanostructured metal oxides through unconventional extraction techniques, their characterization and correlation physico-chemical properties of photocatalysts to the photocatalytic activity and selectivity.


Study of transport phenomena using the method of  surface plasmons resonance

Supervisor: prof. Ing. Lucie Obalová, Ph.D.

Supervisor specialist: Mgr. Martina Vráblová, Ph.D.

Program/Field: Process Engineering, FMME, VSB-TU Ostrava

Annotation

The theme is focused on the study of the transport of substances in solution through the membrane with natural origin (eg. plant cuticle) and also artificially prepared. The method is based on a unique combination of flow-through diffusion cells with modern highly sensitive analytical technique based on evaluation of changes in optical properties of the phase boundary (SPR). Experimental work will be focused on theoretical description, development and testing of new methods and their applications to study the diffusion of substances (pollutants, pesticides, etc.) through semi-permeable membranes. Part of the work will be also analytical procedure for detecting very low concentrations of pollutants in the water and description of their interactions. The output will be the characterization of membranes, understanding of transport phenomena for the combination of selected types of membranes and analytes, and in the case of membranes of natural origin, method will be used to describe the interactions of living systems with the environment.


Dry reforming reactions of hydrocarbons

Supervisor: prof. Ing. Lucie Obalová, Ph.D.

Supervisor specialist: Ing. Pavel Leštinský, Ph.D.

Program/Field: Process Engineering, FMME, VSB-TU Ostrava

Annotation

Catalytic reforming of hydrocarbons, mainly methane is one of the basic methods for producing synthesis gas, especially hydrogen. The steam reforming of methane is a most common method of producing hydrogen. Given the increasing of requirement to reduce of CO2 emissions in the atmosphere, the dry reforming technology have an increasing demand in technology field. In addition, dry reforming method can also be used to decompose VOCs or other hydrocarbons (BTX, tars, etc.), or for cleaning of crude synthesis gas from biomass gasification. The goal of thesis will be the preparation of catalysts based on transition metal on the carbon carrier and the experimental verification of the dry reforming hydrocarbons with CO2.


Waste plastic recycling using catalytic pyrolysis

Supervisor: prof. Ing. Lucie Obalová, Ph.D.

Školitel specialista: Ing. Pavel Leštinský, Ph.D.

Program/Field: Process Engineering, FMME, VSB-TU Ostrava

Annotation

Recycling of plastic waste is one of the ways to reduce the consumption of fossil fuels. Liquid with a high content of the original raw material, which was used to produce plastics, can be produce using thermal treatment with a suitable catalyst (catalytic pyrolysis). The goal of thesis will be determined the optimal conditions (temperature, pressure, catalyst) of catalytic pyrolysis for selected plastic and using a program Aspen Plus for modelling and design of technology for waste plastics treatment including all refining and process operations. The knowledge of analytical method such as thermogravimetry, elemental analysis or gas chromatography is also necessary for experimental work.


 

Preparation of lanthanides doped TiO2 by using pressurized and supercritical fluids for photocatalytic applications

Supervisor: prof. Ing. Kamila Kočí, Ph.D.

Supervisor specialist: Ing. Lenka Matějová, Ph.D.

Program/Field: Process Engineering, FMME, VSB-TU Ostrava

Annotation

The work will bring new knowledge about the effect of preparation by pressurized hot and supercritical fluids on structure, microstructure, textural, optical and other physico-chemical properties of TiO2 doped by selected lanthanides. The materials under investigation will be also conventionally calcined analogues. The photocatalytic activity of developed TiO2-based materials will be investigated in the photocatalytic decomposition of methanol and photocatalytic discoloration of model azo-dye, and determined photocatalytic activity will be correlated with material properties. The aim of the work will be to reveal the ‘preparation/processing-property-performance’ relationship.