Search for dissertations about: "fine chemicals"

Showing result 1 - 5 of 28 swedish dissertations containing the words fine chemicals.

  1. 1. Environmental Assessment of Green Chemicals - LCA of Bio-Based Chemicals Produced Using Biocatalysis

    Author : Linda Tufvesson; Lunds universitet.; Lund University.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; green chemicals; industrial biotechnology; Life cycle assessment; renewable resources;

    Abstract : Popular Abstract in Swedish Alla kemikalier vi använder oss av och utsätter oss för påverkar både oss och den omvärld vi lever i. Under hela sin livscykel har de en påverkan på miljön, från de att man utvinner råmaterialen, när de tillverkas och när vi använder dem. READ MORE

  2. 2. Characteristic Properties and Applications of Fine Particles in Biomass Gasification

    Author : Azhar Malik; Lunds universitet.; Lund University.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gasification; Biomass; Fine particles; catalyst deactivation; dilution probe sampling; organic;

    Abstract : Popular Abstract in Swedish Many of the energy needs in today’s modern society are fulfilled by sources based on fossil fuels, including non-domestic oil and coal. It is well known that the increase in CO2 emission is the result of human activities, mostly fossil fuel consumption. READ MORE

  3. 3. Evaluation of Dust Suppressants for Gravel Roads: Methods Development and Efficiency Studies

    University dissertation from Stockholm : KTH

    Author : Karin Edvardsson; Karin Oscarsson; KTH.; Högskolan Dalarna.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gravel road; dust; particulate matter; PM10; horizontal dust diffusion; deteriorations; maintenance; dust control; dust suppressants; efficiency; application rate; leaching; residual concentration; seasonal variations; salt solution; solid salt; calcium chloride; magnesium chloride; lignosulphonate; polysaccharide sugar ; bitumen emulsion; rape oil; starch; surfactant; mesa; clay; fine material content; Komplexa system - mikrodataanalys; fine material content.;

    Abstract : Application of the proper dust suppressant to a gravel road ensures road safety and riding comfort as well as creating a cleaner and healthier environment for residents in buildings adjacent to the road. It also reduces the need and cost for vehicle repair, road maintenance activities, and aggregate supplementation. READ MORE

  4. 4. Slurry rheology of industrial minerals and its effects on wet ultra-fine grinding

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Mingzhao He; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

    Abstract : This thesis investigates slurry rheology of industrial minerals (limestone and quartzite) and its effects on wet ultra-fine grinding in order to reduce energy cost, increase the throughput as well as the product fineness. The influences of solid concentration, molecular weight of a dispersant, and particle size and distribution on the rheological behaviour of original limestone slurries have been investigated. READ MORE

  5. 5. Biocatalysis in Organic Media: Parameters Influencing Activity, Stability and Enantioselectivity

    University dissertation from Luleå : Luleå tekniska universitet

    Author : David Costes; Lunds universitet.; Lund University.; [2001]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemiteknik och kemisk teknologi; Chemical technology and engineering; Biotechnology; Bioteknik; Proteins; enzymology; Proteiner; enzymologi;

    Abstract : Biocatalysis in organic media offers very attractive methods to prepare fine chemicals. The biocatalyst performance regarding activity, stability and enantioselectivity will determine the viability of the bio-process. READ MORE