Browsing by Author "Rotea, Oana"

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    Implicaţiile economice ale captării şi stocării CO2
    (IEFS, 2011) Rotea, Oana
    The paper presents the necessity and technologies to capture and then to storage the CO 2 to stabilize the concentration of greenhouse gases. The most used technologies are postcombustion, oxy-combustion, pre-combustion. Because storage of CO2 in hydrosphere and biosphere is limited and over filled so that the only way for storage is geosphere wich presents a low risk and high capacity storage.
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    O problemă economică și socială – captarea și stocarea bioxidului de carbon
    (IEFS, 2011) Rotea, Oana
    Carbon capture and storage (CCS) is an emerging technology, appeared as a solution to limit harmful emissions released by burning fossil fuels. Supporters say the idea that this process will stop the spread of pollutants in the atmosphere preventing air pollution. One of the proposed methods of CO2 capture and storage is carried out the following form: methane gas produced from offshore platforms is brought by pipeline to refineries. The refinery is isolating hydrogen and carbon dioxide. CO2 is separated by a membrane and sent back to offshore pipeline. Instead of being released into the atmosphere, carbon is stored below sea level, a few kilometers depth.
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    Protecția mediului prin stocarea bioxidului de carbon și recuperarea și valorificarea gazului metan asociat zacamantului de huila din Valea Jiului Romania
    (IEFS, 2012) Ilias, Nicolae; Andras, Iosif; Radu, Sorin; Chiril, Gheorghe; Teseleanu, George; Rotea, Oana; Gruneantu, Iosif
    Coal deposits forma Jiu Valley coalfield have in their structure big quantities of methane, that is being diluted in the process of exploitation through the ventilation system, this way being reduced the risk of explosions. Another method, that is being used in some coal mines, is called degasification, that consists of eliminating the gas before exploitation of coal and can be used in different proposes. In countries like USA, Germany and Australia this method is used successfully. Extraction of methane can be combined with underground storage of CO2, that will ensure a competitive advantage for clean coal burning technologies.