A5041964489- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Vehicle emissions and performance
- Thermochemical Biomass Conversion Processes
- Energy and Environment Impacts
- Toxic Organic Pollutants Impact
- Fire dynamics and safety research
- Catalytic Processes in Materials Science
- Air Quality Monitoring and Forecasting
- Coal and Its By-products
- Combustion and flame dynamics
- Indoor Air Quality and Microbial Exposure
- Municipal Solid Waste Management
- Aerosol Filtration and Electrostatic Precipitation
- Radiative Heat Transfer Studies
- Atmospheric aerosols and clouds
- Combustion and Detonation Processes
- Climate Change and Health Impacts
- Environmental Policies and Emissions
- Cyclone Separators and Fluid Dynamics
- Wind and Air Flow Studies
- Particle Dynamics in Fluid Flows
- Environmental Impact and Sustainability
- Materials Engineering and Processing
- Occupational and environmental lung diseases
University of Eastern Finland
2015-2024
VTT Technical Research Centre of Finland
2007-2008
Particle and gaseous emissions of a top-feed pellet stove were studied in laboratory conditions. Pellets made separate stem bark materials five different wood species commercial product used as fuels. The study included the determination particle number concentration, size distribution, fine-particle mass (PM1.0), CO, CO2, NOx, volatile organic compounds (VOC). PM1.0 emission was analyzed for inorganic substances, carbon, elemental carbon. Thermodynamic equilibrium calculations performed to...
Abstract. Organic aerosols (OA) derived from small-scale wood combustion emissions are not well represented by current inventories and models, although they contribute substantially to the atmospheric particulate matter (PM) levels. In this work, a 29 m3 smog chamber in ILMARI facility of University Eastern Finland was utilized investigate formation secondary organic aerosol (SOA) modern masonry heater commonly used northern Europe. Emissions were oxidatively aged for variety dark (i.e., O3...
Abstract The absorption Ångström exponent (AAE) describes the spectral dependence of light by aerosols. AAE is typically used to differentiate between different aerosol types for example., black carbon, brown and dust particles. In this study, variation was investigated mainly in fresh emissions from fuel combustion types, including ships, buses, coal‐fired power plants, residential wood burning. results were assembled provide a compendium values emission sources. A dual‐spot aethalometer...
Abstract. Residential biomass combustion significantly contributes to light-absorbing carbonaceous aerosols in the atmosphere, impacting earth's radiative balance at regional and global levels. This study investigates contribution of brown carbon (BrC) total particulate light absorption wavelength range 370–950 nm (BrC370–950) Ångström exponents (AAE470/950) 15 different European residential appliances using a variety wood-based fuels. BrC370–950 was estimated be from 1 % 21 for wood log...
Emissions from the combustion of agricultural biomasses have not been studied extensively. In this study, effects different and mixed fuels on fine particle (PM1) gas emissions a residential cereal burner were investigated. The seeds oat rape, rape bark pellets, wood pellets main fuels. addition, was with peat kaolin kaolin. NOx, SO2, HCl clearly higher or mixed-cereal than pure fuel. carbon monoxide (CO), organic gaseous (OGC), PM1 numbers did differ significantly fuels, although fuel ash...
Fine-particle and gaseous emissions from a modern small-scale pellet boiler were studied with different air-staging settings under load operations. Commercial wood pellets used in the boiler, which worked top-feed fuel input. Partial operation experiments included half-load 12.5 kW low-load 7 kW. In experiments, amounts of primary air decreased by 71 82% while simultaneously keeping constant total air/fuel ratios. This was found to result considerably lower than during normal full-load...
The market of pellet fuels has undergone drastic changes in Europe recent years. Traditional raw materials have become inaccessible due to unavailability or dramatic increases prices. It is possible use other feasible for production. However, novel can disadvantages with respect usability and emissions, these issues need be considered before such are taken into wide-scale Such factors especially important small-scale combustion. Fine particle gaseous emissions from 21 various were studied a...
Abstract Background Wood combustion emissions have been studied previously either by in vitro or vivo models using collected particles, yet most studies neglected gaseous compounds. Furthermore, a more accurate and holistic view of the toxicity aerosols can be gained with parallel direct exposure methods. Moreover, modern techniques such as air-liquid interface (ALI) exposures enable better assessment applied than, for example, previous state-of-the-art submerged cell techniques. Methods We...
Effective density (ρeff) is an important property describing particle transportation in the atmosphere and human respiratory tract. In this study, size dependency of ρeff was determined for fresh photochemically aged particles from residential combustion wood logs brown coal, as well aerosol standard (CAST) burner. increased considerably due to photochemical aging, especially soot agglomerates larger than 100 nm mobility diameter. The increase depends on presence condensable vapors...