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Separation of gaseous pollutants on membrane contactors
Ostrezi, Jan ; Dohnal, Mirko (referee) ; Svěrák, Tomáš (advisor)
The diploma thesis is devoted to the separation of a gasseous pollutant (CO2) from a gas mixture using an experimental technology device - membrane contactor. The theoretical part is mostly focused on the recent progress in the field of membrane contactors. The theoretical part also contains theory of absorption, which is needed to understand the subject properly. The experimental part focuses on the construction of the experimental device. The efficiency of the device in absorption of carbon dioxide to an aqua solution of sodium hydroxide was tested. At the end, experimental data are discussed.
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Removing of Gaseous Pollutants from the Air Masses on the Pilot-Plant Scrubber
Kalivoda, Josef ; Šulc,, Radek (referee) ; Moucha, Tomáš (referee) ; Svěrák, Tomáš (advisor)
The PHD thesis is focused on the absorption with chemical reaction on the pilot plant gas/liquid scrubber. The performance characterization of the apparatus is based on the absorption of carbon dioxide in to the 1\% sodium hydroxide sollution and includes pressure drops, liquid holdup, gas/liquid contact time and the capture effectiveness as well. The experimantal part of the thesis includes a complex of mathematical equations based on the Film theory. The complex of the mathematical equations allowed a calculation of the overall mass transfer coefficient for the type of the gas scrubber at the given experimental conditions.
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Gaseous atmospheric contaminants stripping
Kalivoda, Josef ; Kotlík, Josef (referee) ; Svěrák, Tomáš (advisor)
The Diploma thesis is devoted to the absorption of gases by the experimental gas scrubber. The main attention of the theoretical part is focused on the description of absorption, kinetics and the equilibrium between gas and liquid phase. Experimental part is concentrated on the absorption of carbon dioxide to deionized water in the experimental scrubber. Finally, experimental data are discussed.
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The separation efficiency of air pollutants on pilot air scrubber
Magera, Lukáš ; Vlasák, Jaroslav (referee) ; Svěrák, Tomáš (advisor)
This diploma thesis deals with the separation process of air polutant on air scrubber. Absorption of carbon dioxide was carried out into 1 % solution of sodium hydroxide. Theoretical part is aimed at mass transportation, theory of absorption and examples of scrubbers. Experimental part focuses on some operating characteristics of scrubber and on optimisation of two-phase flow. The influence of hydrodynamic conditions on the absorption efficiency was found.
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The separation efficiency of air pollutants on pilot air scrubber
Magera, Lukáš ; Vlasák, Jaroslav (referee) ; Svěrák, Tomáš (advisor)
This diploma thesis deals with the separation process of air polutant on air scrubber. Absorption of carbon dioxide was carried out into 1 % solution of sodium hydroxide. Theoretical part is aimed at mass transportation, theory of absorption and examples of scrubbers. Experimental part focuses on some operating characteristics of scrubber and on optimisation of two-phase flow. The influence of hydrodynamic conditions on the absorption efficiency was found.
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Removing of Gaseous Pollutants from the Air Masses on the Pilot-Plant Scrubber
Kalivoda, Josef ; Šulc,, Radek (referee) ; Moucha, Tomáš (referee) ; Svěrák, Tomáš (advisor)
The PHD thesis is focused on the absorption with chemical reaction on the pilot plant gas/liquid scrubber. The performance characterization of the apparatus is based on the absorption of carbon dioxide in to the 1\% sodium hydroxide sollution and includes pressure drops, liquid holdup, gas/liquid contact time and the capture effectiveness as well. The experimantal part of the thesis includes a complex of mathematical equations based on the Film theory. The complex of the mathematical equations allowed a calculation of the overall mass transfer coefficient for the type of the gas scrubber at the given experimental conditions.
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Separation of gaseous pollutants on membrane contactors
Ostrezi, Jan ; Dohnal, Mirko (referee) ; Svěrák, Tomáš (advisor)
The diploma thesis is devoted to the separation of a gasseous pollutant (CO2) from a gas mixture using an experimental technology device - membrane contactor. The theoretical part is mostly focused on the recent progress in the field of membrane contactors. The theoretical part also contains theory of absorption, which is needed to understand the subject properly. The experimental part focuses on the construction of the experimental device. The efficiency of the device in absorption of carbon dioxide to an aqua solution of sodium hydroxide was tested. At the end, experimental data are discussed.
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Gaseous atmospheric contaminants stripping
Kalivoda, Josef ; Kotlík, Josef (referee) ; Svěrák, Tomáš (advisor)
The Diploma thesis is devoted to the absorption of gases by the experimental gas scrubber. The main attention of the theoretical part is focused on the description of absorption, kinetics and the equilibrium between gas and liquid phase. Experimental part is concentrated on the absorption of carbon dioxide to deionized water in the experimental scrubber. Finally, experimental data are discussed.
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The femtosecond optical frequency comb based tool for spectral analysis of molecular absorbtion gases
Lešundák, Adam ; Šmíd, Radek ; Buchta, Zdeněk ; Mikel, Břetislav ; Lazar, Josef ; Randula, A. ; Číp, Ondřej
The spectral analysis of absorption of molecular gases belongs to very powerful methods for detection of concentration of gases in a tested sample. In case of the human breath it consists of hundreds of molecules of gasses and their concentrations are known as biomarkers. An increased concentration of more of them indicates certain diseases or symptoms. The presenting work covers a pilot experiment where femtosecond pulse probe laser and a detection chain based on cross-correlation makes an analysis of the specimen of the absorption gas. In the pilot experimental set-up the detection part utilizes a Michelson interferometer with movable measuring mirror. We developed a novel digital processing method for precise stabilization of the speed of the mirror during measuring process. The caught optical signals are calculated by the fast Fourier transform from the time to wavelength domain. The first caught spectra of the femtosecond beam passing trough the specimens show absorption lines of one isotope of acetylene which was tested as the first sample. The work proofed positive the possibility of using the femtosecond laser for detection of broadband absorption spectra in the infrared region.
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