Sökning: "lignin fuel"

Visar resultat 16 - 20 av 50 avhandlingar innehållade orden lignin fuel.

1. 16. The effect of wood properties on oxidative isolation of cellulose nanofibrils and characterization of networks

   Författare :Simon Jonasson; Kristiina Oksman; Lars Wågberg; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cellulose nanofibrils; wood; TEMPO-oxidation; nanofibril network; lignin; tension wood; transgenic tree; Trä och bionanokompositer; Wood and Bionanocomposites;

   Sammanfattning : Wood is a natural resource that has been an integral part of society for as long as humans have been on Earth. From serving as fuel for fire and construction material the applications of wood has been developed in modern times and only surged as a consequence of societal strive for sustainability and usage of green resources. LÄS MER

3. 17. Hydrothermal Liquefaction of Kraft Lignin - The influence of capping agents and residence time

   Författare :Anders Ahlbom; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; HTL; hydrothermal liquefaction; isopropanol; residence time; kraft lignin;

   Sammanfattning : In the context of exploring alternatives to replace fossil resources, lignin has been acknowledged as a renewable source of various aromatic compounds that have the potential of being precursors to chemicals as well as fuel additives. Originating from lignocellulosic biomass such as wood, lignin is an amorphous polymer with a high content of aromatic units and, in order to harness these units, it must be depolymerised. LÄS MER

4. 18. Hydrothermal Depolymerisation of Kraft Lignin: The Influence of Capping Agents and Residence Time

   Författare :Anders Ahlbom; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; isopropanol; depolymerisation; capping agents; kraft lignin; glycerol; guaiacol; hydrothermal liquefaction;

   Sammanfattning : Lignin, the aromatic macromolecule found in wood and other lignocellulosic biomass, is envisioned as a future renewable source of aromatic compounds that can be used as, for example, chemicals, fuel additives and resins. A way in which this can be realised is by depolymerising the lignin once it has been isolated from the lignocellulosic biomass. LÄS MER

5. 19. Hydrotreatment of lignin and its bio-oils over transition metal sulfide-based supported and unsupported catalysts

   Författare :You Wayne Cheah; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Pyrolysis oil; Propylguaiacol; Reaction network; Advanced biofuels; Hydrotreatment; MoS2; Unsupported TMS; Kraft lignin; Transition metals; Bio-oils;

   Sammanfattning : The scarcity of fossil feedstocks and the deterioration of the current global climate condition have prompted the search for reliable alternatives for fossil fuel replacement. Biomass feedstocks such as lignin can be used to produce renewable bio-oils that can fill the gap left by fossil-derived oils. LÄS MER

7. 20. Stump as a fuel : the influence of harvesting technique and storage method on fuel quality of Norway spruce

   Författare :Erik Anerud; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Uncertain long-term availability of fossil fuels and the negative environmental impact of using it have created an urgent need for reliable renewable energy sources. Wood fuel, particularly forest residues is one of these sources which are in high demand in Sweden today. LÄS MER