Sökning: "etanol"

Visar resultat 1 - 5 av 67 avhandlingar innehållade ordet etanol.

1. 1. Bränsle för den moderna nationen : Etanol och gengas i Sverige under mellankrigstiden och andra världskriget

   Författare :Helena Ekerholm; Bosse Sundin; Jonny Hjelm; Arne Kaijser; Umeå universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; alternative fuels; ethanol; wood gas; energy policy; controversy; history of biofuels; alternative technology; social constructions of technology; socio-technical systems; political debate; socio-technical debate; history of technology; automotive history.; drivmedel; etanol; generatorgas; gengas; drivmedelsalternativ; biodrivmedel; förväntningar; kontrovers; sociotekniska system; sociala konstruktioner av teknik; alternativ teknik; politik; teknikdebatt; energipolitik; mellankrigstiden; andra världskriget; autarki; socioteknisk debatt; automobilhistoria; motorhistoria; historia; History;

   Sammanfattning : This thesis investigate Swedish policy-making concerning promotion of wood gas and ethanol distilled from fermented sulphite lye as domestic fuel alternatives in the Interwar years and World War II. With a departure point in the theories of social constructions of technology (SCOT), the sociology of expectations and Thomas P. LÄS MER

3. 2. Conversion processes for biofuel production

   Författare :Jerry Luis Solis; Yohannes Kiros; Mohammad Taherzadeh; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Second-generation biofuels; biodiesel; heterogeneous catalysts; non-edible oils; ethanol; residual biomass; native yeast strains.; Andra generationens biobränslen; biodiesel; heterogena katalysatorer; oätliga oljor; etanol; rester av biomassa; naturliga jäststammar; Chemical Engineering; Kemiteknik; Energy Technology; Energiteknik;

   Sammanfattning : Despite the global positive impacts of soybean-, maize- and sugarcane-based (first-generation) liquid biofuels, several drawbacks pertaining to increased use of agricultural land, causing deforestation in some countries and extensive practice of fertilizers have been observed. As a result, developing advanced (second- and third-generation) liquid biofuels have been identified as better alternatives and are considered to be of great importance in the future. LÄS MER

4. 3. Retrofitting CHP Plant and Optimization of Regional Energy System

   Författare :Song Han; Jinyue Yan; Eva Thorin; Mats Westermark; Mälardalens högskola; []
   Nyckelord :annual performance; combined heat and power; drying; ethanol; integration; part-load.; årliga prestation; kraftvärme; torkning; etanol; integration; del-last.; Energy- and Environmental Engineering; energi- och miljöteknik;

   Sammanfattning : The use of biomass-based combined heat and power (CHP) plants is considered by the EU administration to be an effective way to increase the use of renewables in the energy system, to reduce greenhouse gas emissions and to alleviate the dependency on imported fossil fuels. At present in Sweden, most of the CHP plants are operated in part-load mode because of variations in heat demand. LÄS MER

5. 4. Production of Ethanol from Spruce at High Solids Concentrations - An Experimental Study on Process Development of Simultaneous Saccharification and Fermentation

   Författare :Kerstin Hoyer; Avdelningen för kemiteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ethanol; spruce; SSF; fermentation; enzymatic hydrolysis; lignocellulose; high solids;

   Sammanfattning : Replacing fossil fuels by biofuels such as ethanol is considered a promising alternative to reduce greenhouse gas (GHG) emissions and mitigate climate change. Biofuels produced from lignocellulosic biomass, so-called second generation biofuels, result in decreased GHG emissions and limit competition with food and animal feed production. LÄS MER

7. 5. Diffusive Combustion of Ethanol in a Dual-Fuel Direct Injection Compression Ignition Engine

   Författare :Nicola Giramondi; Anders Christiansen Erlandsson; Mihai Mihaescu; Anders Jäger; Jan Erik Eismark; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Design; Maskinkonstruktion;

   Sammanfattning : The impact of climate change due to global warming necessitates rapid and extensive measures to enhance the sustainability of the energy and transport sectors. In this context, there are large environmental and societal benefits to be gained by replacing diesel with renewable fuels for road freight transport. LÄS MER