Sökning: "biomass conversion efficiency"

Visar resultat 16 - 20 av 33 uppsatser innehållade orden biomass conversion efficiency.

1. 16. Biochar in the Höganäs sponge iron process – techno-economic analysis of integrated production

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Oscar Olofsson; [2018]
   Nyckelord :Techno-economic analysis; system modeling; system integration; biochar; biomass; pyrolysis; sponge iron;

   Sammanfattning : Biomass-based reducing agents have a potential to substitute fossil reducing agents in the steel industry. However, the industrial use of biomass-based reducing agents is currently in an early stage of development and has not yet been considered as a means to reduce fossil CO2 emissions, even though the use of fossil-based reducing agents for the iron and steel making cause the highest share of CO2 emissions. LÄS MER

3. 17. Modelling of Biomass Pyrolysis with Ex-situ Catalytic Upgrading for Bio-crude Production

   Master-uppsats, KTH/Materialvetenskap

   Författare :Febryana Nugrahany; [2018]
   Nyckelord :ex-situ catalytic upgrading; slow pyrolysis; screw reactor; fixed bed catalytic reactor; process design;

   Sammanfattning : This study presents a techno-economic assessment of slow pyrolysis of pine sawdust continued by ex-situ catalytic upgrading. The overall process consists of six sections: feed drying, pyrolysis, vapor filtration, ex-situ catalytic upgrading, vapor quenching, and combustion of permanent gas. LÄS MER

4. 18. Construction of Gene Libraries from Environmental Isolates for expression in Pseudomonas putida

   Master-uppsats, Lunds universitet/Teknisk mikrobiologi; Lunds universitet/Bioteknik

   Författare :Helga Helgadóttir; [2018]
   Nyckelord :applied microbiology; teknisk mikrobiologi; Biology and Life Sciences; Technology and Engineering;

   Sammanfattning : Currently most aromatic compounds used in industry are derived from unsustainable petro-chemical feedstock. However the depolymerization of lignocellulosic biomass generates a wide range of aromatic compounds that could be further valued through microbial conversion with microorgansims such as the bacterium Pseudomonas putida. LÄS MER

5. 19. Construction and Characterization of 3rd Generation Saccharomyces cerevisiae Strains for PHB production form Xylose

   Master-uppsats, Lunds universitet/Teknisk mikrobiologi; Lunds universitet/Bioteknik

   Författare :Pálína Haraldsdóttir; [2018]
   Nyckelord :Applied microbiology; Teknisk mikrobiologi; Technology and Engineering;

   Sammanfattning : Poly-3-D-hydroxybutyrate (PHB) is a biopolymer naturally produced by a range of bacterial species. PHB production both from glucose and xylose has also been enabled by engineering the robust baker’s yeast Saccharomyces cerevisiae, however yields remain low. In the present study, additional modifications were carried out in S. LÄS MER

7. 20. Granskning av avancerade pyrolysprocesser med lignocellulosa som råvara – tekniska lösningar och marknadsförutsättningar

   Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

   Författare :Elisabet Sundberg; [2017]
   Nyckelord :Fast pyrolysis; slow pyrolysis; pyrolysis oil; commercial process; lignocellulose; Snabb pyrolys; långsam pyrolys; pyrolysolja; kommersiell process; lignocellulosa;

   Sammanfattning : När befolkningsmängden ökar och teknisk och ekonomisk utveckling sker så påverkas även energianvändningen. Detta ställer krav på att energitillförseln är säker, stabil och hållbar. LÄS MER