Sökning: "Biomass burning"

Visar resultat 11 - 15 av 58 avhandlingar innehållade orden Biomass burning.

  1. 11. Phenolic Antioxidants in Wood Smoke

    Författare :Jennica Kjällstrand; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; smoke; benzene; methoxyphenols; antioxidants; wood; lignin; combustion; biomass;

    Sammanfattning : Smoke from residential wood burning constitutes a complex mixture of organic compounds with varying environmental and health effects. This thesis focuses on antioxidants and aromatic hydrocarbons emitted from small-scale burning. LÄS MER

  3. 12. Analysis of tracer molecules from organic aerosols - Application of liquid phase microextraction to aerosol analysis

    Författare :Murtaza Hyder; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Liquid membrane extraction; Secondary organic aerosols; Enrichment; Tracers; Hollow fiber liquid phase microextraction; Biomass burning; Organic carbon;

    Sammanfattning : Airborne particulate matter is well known because of its adverse impacts on human health and its role in climate processes. In order to understand completely the role of aerosols in atmosphere, their chemical composition is of basic importance. LÄS MER

  4. 13. Particle emissions from residential wood and biodiesel combustion

    Författare :Robin Nyström; Christoffer Boman; Dan Boström; Markus Broström; Michael Strand; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Combustion; biomass; wood; biodiesel; particulate matter; emissions; aerosols; physicochemical properties; size distribution; PAH;

    Sammanfattning : Emissions from anthropogenic combustion sources, such as vehicles and biomass combustion, contribute significantly to ambient particulate matter (PM) both on a local and global scale. Exposure to ambient PM and air pollution in general is linked to a variety of different health effects and it has been estimated that as many as 2. LÄS MER

  5. 14. Alkali Induced High Temperature Corrosion of Stainless Steel - Experiences from Laboratory and Field

    Författare :Jesper Pettersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; KCl; 304L; Biomass; Corrosion; Chlorine; Chromate; Waste; Deposit;

    Sammanfattning : The high temperature corrosion of steam superheaters is a major obstacle that has to be overcome in order to increase the electricity generating efficiency of power boilers burning biomass or waste. This thesis addresses this issue by a combination of well-controlled model experiments in the laboratory and short and long term field exposures using cooled probes in full-scale biomass and waste fired boilers. LÄS MER

  7. 15. Aerosol impacts on subtropical low-level clouds: a satellite and modelling perspective

    Författare :Alejandro Baró Pérez; Annica M.L. Ekman; Frida A.-M. Bender; Abhay Devasthale; Jens Redemann; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Aerosol-cloud-radiation interactions; cloud microphysics; biomass burning; stratocumulus to cumulus transition; cloud radiative effect; Atmospheric Sciences and Oceanography; atmosfärvetenskap och oceanografi;

    Sammanfattning : Complex interactions between aerosols, clouds, and radiation impact Earth's climate. However, several aspects of these interactions remain uncertain, which has led to extensive research over the last decades. LÄS MER