Sökning: "liquid biofuels"

Visar resultat 1 - 5 av 35 avhandlingar innehållade orden liquid biofuels.

1. 1. Biochemical conversion of biomass to biofuels : pretreatment–detoxification–hydrolysis–fermentation

   Författare :Venkata Prabhakar Soudham; Jyri-Pekka Mikkola; Christer Larsson; Tom Birger Granström; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lignocellulosic materials; Ionic liquids; Pretreatment; Inhibitors; Detoxification; Ferrous sulfate and hydrogen peroxide; reducing agents; alkaline treatments; Hydrolysis; Fermentation; Biofuels; biokemi; Biochemistry;

   Sammanfattning : The use of lignocellulosic materials to replace fossil resources for the industrial production of fuels, chemicals, and materials is increasing. The carbohydrate composition of lignocellulose (i.e. cellulose and hemicellulose) is an abundant source of sugars. LÄS MER

3. 2. Catalytic conversion of biomass-derived synthesis gas to liquid fuels

   Författare :Rodrigo Suárez París; Magali Boutonnet; Agustín Martínez Feliu; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biofuels; Fischer-Tropsch wax; higher alcohols; hydroconversion; kinetic modelling; methanol cofeeding; microemulsion; MoS2; noble metal; syngas; Chemical Engineering; Kemiteknik;

   Sammanfattning : Climate change is one of the biggest global threats of the 21st century. Fossil fuels constitute by far the most important energy source for transportation and the different governments are starting to take action to promote the use of cleaner fuels. LÄS MER

4. 3. The Effects of Oxygenated Fuels on DISI Engine Particle Emissions and Efficiency : Experimental investigation of the effects of oxygenated biofuels on particle emissions and engine performance

   Författare :Tara Larsson; Ulf Olofsson; Terese Løvås; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biofuels; reneawable fuels; direct-injected engines; spark-ignited engines; particle emissions; engine efficiency; engine performance; Machine Design; Maskinkonstruktion;

   Sammanfattning : The transport sector is one of the main sources of greenhouse gas emissions.Replacing fossil fuels with renewable fuels can help reduce the impact oftransportation on the climate. LÄS MER

5. 4. Adding Fuel to the Fire : North-South dynamics in the geographies of transport energy: the case of EU biofuels

   Författare :David Harnesk; LUCSUS; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; energy geography; geopolitics; territorialisation; climate change mitigation; transport; biofuels; agrofuels; European Union EU ; certification; sustainability criteria; sustainability science; energi; geografi; geopolitik; territorialisering; klimatomställning; transport; biodrivmedel; biobränsle; Europeiska Unionen; certifiering; hållbarhetskriterier; hållbarhetsvetenskap;

   Sammanfattning : Since the 2000s, the European Union (EU) has promoted biofuels for transport to achieve climate change mitigation, and rural development in the global South. In contrast, critiques have argued that biofuel promotion impedes more meaningful mitigation while also resulting in dispossession of land and loss of labour opportunities in the global South. LÄS MER

7. 5. Cost-effective fuel and technology choices in the transportation sector in a future carbon constrained world: Results from the Global Energy Transition (GET) model

   Författare :Maria Grahn; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; energy prices; CSP; CO2 emissions; hydrogen; CCS; carbon tax; biomass; carbon leakage; liquid biofuels; global energy systems modeling; transportation; passenger vehicles;

   Sammanfattning : This thesis analyzes future fuel and technology choices focusing on transport in a carbon constrained world. The analysis tool used in all five appended papers is the cost-minimizing Global Energy Transition (GET) model. LÄS MER