CEST Proceedings are published under the ISSN 2944-9820.
Heat of adsorption in the fly ash zeolite – CO2 system at dynamic conditions
Zgureva D., (Corresponding) Boycheva S., Marinov I., Miteva S., Asenov A.
Topic:
Climate change mitigation and adaptation
The global warming represents one of the main world problems in the recent decades as it is considered that electricity production by coal burning is responsible for 40 % of the total CO2 emissions. The post-combustion capture of CO2 based on physical adsorption has the highest potential for...Read more
Keywords:
Post-combustion carbon capture, Adsorption, Coal ash zeolites, Heat of adsorption
Thermal swing adsorption for post-combustion carbon dioxide capture
(Corresponding) Boycheva S., Zgureva D., Miteva S., Marinov I., Lazarova H., Popova M.
Topic:
Climate change mitigation and adaptation
The advantages of post-combustion capture of CO2 based on physical adsorption have been extensively studied in the last years regarding to the economy, environmental compatibility, and process’ efficiency. The industrialization of the process involves the construction of adsorption columns in which...Read more
Keywords:
Green house gasses, Coal combustion, Carbon capture technologies, Thermal swing adsorption
Coal ash zeolite as a self-catalytic-chemisorption system for conversion of carbon dioxide to hydrocarbons
(Corresponding) Boycheva S., Zgureva D.
Topic:
Climate change mitigation and adaptation
At present, the developments of sustainable carbon capture technologies are of the main scientific and technological priority required to mitigate the over generation of greenhouse gases. Three CO2 clean energy production approaches have been outlined: pre-combustion capture, oxy-fuel combustion...Read more
Keywords:
Carbon dioxide utilization, carbon capture, coal ash zeolites, conversion of CO2 to fuel
Studies on the CO2 adsorption mechanism of Na-X and Na-Ca-X coal fly ash zeolites
(Corresponding) Boycheva S., Lazarova H., Zgureva D., Popova M.
Topic:
Climate change mitigation and adaptation
Coal fly ash zeolites (CFAZ) of Na-X and Na-Ca-X types were synthesized using as raw materials fly ashes generated by the combustion of lignite from various deposits with low and medium limestone content. It has been found that CFAZs with higher calcium content superior those containing less...Read more
Studies on the CO2 adsorption onto coal fly ash zeolites at elevated pressures
(Corresponding) Boycheva S., Zgureva D.
Topic:
Climate change mitigation and adaptation
Coal fly ash zeolites (CFAZs) of Na-X type were prepared by ultrasonic-assisted double stage fusion-hydrothermal synthesis from lignite coal fly ash at two different fusion temperatures 550 and 800 C. The detailed surface analyses were performed experimentally using N2 physisorption technique and...Read more
Utilization of alkaline converted ash blends from lignite and biomass combustion for carbon capture
(Corresponding) Boycheva S., Dimitrov M., Zabov E., Winter F., Popova M.
Topic:
Gas emissions control and utilization
The replacement of fossil fuels by renewable biofuels is one of the ways to limit climate change and improve the quality of the atmospheric air. For existing solid fuel combustion plants, a partial replacement of coal with biomass from wood or agriculture waste is applied. In this paper the effect...Read more
