A5055621488- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Vehicle emissions and performance
- Energy and Environment Impacts
- Thermochemical Biomass Conversion Processes
- Toxic Organic Pollutants Impact
- Fire dynamics and safety research
- Combustion and flame dynamics
- Radiative Heat Transfer Studies
- Indoor Air Quality and Microbial Exposure
- Air Quality Monitoring and Forecasting
- Recycling and Waste Management Techniques
- Catalytic Processes in Materials Science
- Atmospheric aerosols and clouds
- Health, Environment, Cognitive Aging
- Coal and Its By-products
- Municipal Solid Waste Management
- Bioenergy crop production and management
- Adolescent and Pediatric Healthcare
- Birth, Development, and Health
- Forest Biomass Utilization and Management
- Fibromyalgia and Chronic Fatigue Syndrome Research
- Genomics, phytochemicals, and oxidative stress
- Autoimmune and Inflammatory Disorders Research
- Climate Change and Health Impacts
University of Eastern Finland
2015-2024
Statistics Norway
2015
Finland University
2012
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...
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...
Gas flaring in the oil and gas industry has been identified as an important source of anthropogenic black carbon (BC) affecting climate, particularly Arctic. Our study provides spatially-explicit estimates BC emissions from Russia utilising state-of-the-art methodology for determining emission factors. We utilised satellite time series flared volume Visible Infrared Imaging Radiometer Suite (VIIRS) period 2012 to 2017, supplemented with information on field type. at locations were calculated...
The effective density of fine particles emitted from small-scale wood combustion various fuels were determined with a system consisting an aerosol particle mass analyzer and scanning mobility sizer (APM-SMPS). A novel sampling chamber was combined to the enable measurements highly fluctuating processes. In addition, mass-mobility exponents (relates size) data describe shape particles. Particle size, type fuel, phase, conditions found have effect on shape. For example, steady phase produced...
Abstract. Residential wood combustion (RWC) emits large amounts of gaseous and particulate organic aerosol (OA). In the atmosphere, emission is transformed via oxidative reactions, which are under daylight conditions driven mainly by hydroxyl radicals (OH). This continuing ageing produces secondary OA may change health- climate-related properties emission. However, it not well known how composition RWC-originated changes as function OH exposure. this work, emissions from two modern...
Aerosols emitted from various anthropogenic and natural sources undergo constant physicochemical transformations in the atmosphere, altering their impacts on health climate. This article presents design characteristics of a novel Photochemical Emission Aging flow tube Reactor (PEAR). The PEAR was designed to provide sufficient aerosol mass for simultaneous measurement properties aged aerosols emission exposure studies (in vivo vitro). performance evaluated by using common precursors...
Context: Particulate matter (PM) has been identified as a major environmental pollutant causing severe health problems. Large amounts of the harmful particulate are emitted from residential wood combustion, but toxicological properties combustion particles poorly known.Objective: To investigate chemical and consequent characteristics PM1 different phases batch in four heating appliances.Materials methods: Mouse RAW264.7 macrophages human BEAS-2B bronchial epithelial cells were exposed for 24...
Sauna Stoves (SS) are simple wood combustion appliances used mainly in Nordic countries. They generate emissions that have an impact on air quality and climate. In this study, a new measurement concept for comparing the operation, thermal efficiency, real-life fine particle gaseous of SS was utilized. addition, novel, simple, universal emission calculation procedure determination nominal factors developed which equations presented first time. Fine concentrations from 10 different types were...
Five different boiler types (automatic boiler, overfire with down-draft combustion, and two of gasification boilers) representing residential-scale combustion technology were tested. Boilers fueled various fuels (lignite, wet dry wood, wood pellets, mixed fuel), the emissions measured both at nominal reduced output. The investigated comprised CO, organic gaseous compounds (OGC), particulate matter (PM). A cyclone a low-pressure impactor used to determine PM emissions. It was found that...
Solid fuel usage in residential heating and cooking is one of the largest sources ambient indoor air particulate matter, which causes adverse effects on health millions peoples worldwide. Emissions from solid combustion, such as biomass or coal, are detrimental to health, but toxicological responses largely unknown. In present study, we compared regarding cytotoxicity, inflammation genotoxicity spruce (SPR) brown coal briquette (BCB) combustion aerosols human alveolar epithelial cells (A549)...
There is a need to develop feasible PM reduction methods for small-scale biomass combustion installations due their high emissions. In this work, we evaluated the potential of novel prototype heat exchanger (PHX) designed particle emission reduction. addition, role different deposition mechanisms in such an application was studied. The PHX connected wood-fired unit, and both gas emissions thermal efficiencies were evaluated. scrubbing system, keeping walls clean, system. efficiency reached...