Sökning: "CO2 conversion"

Visar resultat 1 - 5 av 170 avhandlingar innehållade orden CO2 conversion.

1. 1. A novel solar-driven system for two-step conversion of CO2 with ceria-based catalysts

   Författare :Bo Wei; Reza Fakhrai; Torsten Fransson; Nader Jand; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CO2 conversion; solar; ceria; thermogravimetric test; exergy analysis; simulink; fluidized bed; gas-solid flow; simulation; Energiteknik; Energy Technology;

   Sammanfattning : Global warming is an unequivocal fact proved by the persistent rise of the average temperature of the earth. IPCC reported that scientists were more than 90 % certain that most of the global warming was caused by increasing concentrations of greenhouse gases (GHG) produced by human activities. LÄS MER

3. 2. Alkali Release and Effects on Biomass Thermal Conversion Processes

   Författare :Yaxin Ge; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Co-conversion; Alkali; Biomass; bed material; thermal conversion; online measurements;

   Sammanfattning : High alkali content is an important feature of biomass, and it has a series of implications for thermal conversion processes. This thesis focuses on the release of alkali during various biomass thermal conversion processes, including biomass pyrolysis, char gasification, co-conversion of different types of biomass, and thermal conversion of biomass mixed with fresh and used bed materials. LÄS MER

4. 3. Utilizing CO2 from biomethane production : Sustainability and climate performance

   Författare :Stephanie S. Cordova; Mats Eklund; Marcus Gustafsson; Niclas Svensson; Valentina Bisinella; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomethane; Carbon capture and utilization; CCU; CO₂ utilization;

   Sammanfattning : Biogas solutions offer many benefits for the environment and society, including organic waste treatment as well as being an enabler for energy and nutrient recovery. The products of anaerobic digestion are a biogas, which contains a share of 30 to 50% carbon dioxide (CO2) and 50 to 70% methane, and a liquid remanent, rich in nutrients. LÄS MER

5. 4. Analysing performance of bio-refinery systems by integrating black liquor gasification with chemical pulp mills

   Författare :Muhammad Raza Naqvi; Yinyue Yan; Chou Siaw Kiang; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bio-refinery; Biomass; Black liquor gasification; Bio-fuel; Pulp mill; CO2; Conversion efficiency; Integration; Synthesis gas;

   Sammanfattning : Mitigation of climate change and energy security are major driving forces for increased biomass utilization. The pulp and paper industry consumes a large proportion of the biomass worldwide including bark, wood residues, and black liquor. LÄS MER

7. 5. Catalytic conversion of syngas to higher alcohols over MoS2-based catalysts

   Författare :Robert Andersson; Magali Boutonnet; Sven Järås; Anders Holmen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; conversion; higher alcohols; mixed alcohols; MoS2; syngas; Chemical Engineering; Kemiteknik;

   Sammanfattning : The present thesis concerns catalytic conversion of syngas (H2+ CO) into a blend of methanol and higher alcohols, an attractive way of producing fuels and chemicals. This route has the potential to reduce the oil dependence in the transport sector and, with the use of biomass for the syngas generation, produce CO2-neutral fuels. LÄS MER