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Gaseous products of microbial decomposition of organic pollution in constructed wetland used for wastewater treatment.
ŠTĚPÁNEK, Jindřich
This master thesis is dealing with monitoring of gaseous products of microbial decomposition of organic pollution in constructed wetland. This wetland was used for wastewater treatment in a village Slavošovice, Czech Republic. Emissions of CO2, CH4 and N2O were measured in one treatment bed of the system. The emissions were quantified, their seasonal course was followed, and the main factors affecting gaseous emissions were identified. Only 3 % of total C emissions were in form of methane, N2O emissions were negligible and only 1,5 % of nitrogen denitrified were in form of N2O. Carbon and nitrogen balances of the system were estimated.
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Ecological Application of Carbon Dioxide and Its Use in Sustainable Chemistry
Bušta, K. ; Wagner, Zdeněk
Carbon dioxide, which is mostly waste of chemical processes and of combustion processes, finds currently a wide scope of application as a versatile technical gas, as one of basic building blocks for synthesis in organic chemistry. A great many applications in the technical area contribute to the protection of the environment and human health. Zadejte text nebo adresu webu nebo přeložte dokument. Zrušit Poslech Překlad (česky > anglicky) These applications include the use of carbon dioxide as an extraction agent to obtain aromatic and medicinal substances from natural materials in the food and pharmaceutical industries.
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Model růstu kapky ve směsi metanu, nonanu a přesyceného oxidu uhličitého
Krejčí, A. Petr
In order to use existing setup, based on shock tube, for nucleation rate measurement in mixture of methane, nonane and supersaturated carbon dioxide, the problem of fast growing droplets has been solved. Series of experiments with parameters suggested on the basis of developed model has been performed recently. The experiments were successful. Scattering and transmitted intensity signals allow extracting information about CO2 droplet growth and droplet number density.
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Emissions of greenhouse gases (N2O and CO2) from pasture soil as a result of activity of soil microbial community - preliminary results
Šimek, Miloslav ; Hynšt, Jaroslav ; Brůček, Petr ; Čuhel, Jiří
Cattle overwintering area was shown an important point source of N2O and CO2. The emissions of N2O were mostly directly related to the rate of animal impact as the greatest fluxes of N2O and the highest total cumulative N2O emissions as well were found at the most impacted site. The fluxes of N2O were however very variable in time and most of N2O was emitted during several short events in spring or in winter. Laboratory experiments suggested that total amount of nitrogen escaping from soil from impacted sites is much greater than indicated by field measurements of N2O fluxes and molecular nitrogen (N2) was shown as the main nitrogen gas. It is hypothesized that soil pH is a crucial soil factor controlling the mole fraction of N2O: under slightly alkaline conditions in severely impacted soils, denitrification is completed and most of nitrogen escapes from the soil as N2; under more acidic conditions, however, the activity of nitrous oxide reductase is partly reduced.
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Current state and perspectives on taxation of motor vehicles in the EU
John, Jiří ; Láchová, Lenka (advisor) ; Teklý, Lukáš (referee)
Bachelor thesis focuses on the issue of taxation of motor vehicles in the EU. Taxation of motor vehicles is harmonized these days on the grounds of elimination of market failures and motivation of customers to buy environmentally friendly cars. Work consists of 3 main parts. The first part describes the concepts of tax competition, coordination and harmonization. Furthermore, this section deals with the steps the EU, leading to a reduction of carbon dioxide emissions and their impact on the taxation of motor vehicles. The second part focuses on the taxation of motor vehicles used in selected member countries of the European Union. These countries tax cars based on emissions of carbon dioxide. In the third part of the paper is described the current state of taxation of motor vehicles in the Czech Republic. This section also deals with the future taxation of motor vehicles.
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Environmental and economic impacts of include aviation to EU ETS
Tauferová, Michaela ; Jílková, Jiřina (advisor) ; Vojáček, Ondřej (referee)
The main topic of this thesis is analysis of supposed impacts of include aviation to EU ETS. Analysis is built on estimation real situation in topic and data analysis. In the first part of work is explicate aviation from environmental view and legislativ. The second part handle about emissions trading. In the third and fourth part of work are described the new direction of implementing the aviation into EU ETS and position of particular involved sides and economics and environmental impacts. The final part is handled comparison of considered environmental policy to reduce aviation effects to climate change.
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