dust emissions Articles

  • A Critical Evaluation of the South African Air Quality Offsets Guideline

    There is wide recognition in South Africa to the link between the quality of life and quality of the air we breathe. The Department of Environmental Affairs (DEA) attempts to improve air quality through two key regulatory tools; emission limits, which regulate the maximum concentration of certain pollutants permissible within certain, ‘listed’ industrial stacks or vents, and ambient ...


    By WKC Group

  • New laser-based dust emission monitoring system

    Abstract A new generation of continuous particulate matter concentration monitoring instruments is presented, covering a measuring range of 0 to 1000 mg/m3. The laser-based scattered light instrument gives an improved stability as well as excellent resolution in the low range. This enables high concentration measurement as well as especially low emission monitoring down to 0.01 mg/m3 with a ...


    By Sigrist-Photometer AG

  • Sensitivity of AERMOD in Modeling Fugitive Dust Emission Sources

    Dispersion modelers have long faced challenges estimating ambient pollutant concentrations caused by releases from “fugitive” sources of particulate matter, such as paved and unpaved roadways, raw material storage piles, outdoor material processing operations, agricultural activities, or windblown dust in general. Fugitive emissions are commonly defined as those that could not ...

  • Dust monitoring

    Generally, two different approaches are used to measure the amount of dust deposited on a surface; Determination of the soiling of a surface, by a change in its properties; Determination of the quantity of dust deposited, by weight. WHAT IS DUST? Dust is a generic term used to describe fine particles that are suspended in the atmosphere. Dust comes from a wide variety of sources, including soil, ...


    By Queensland Laboratory

  • Studies of Emissions from Anthropogenic and Natural Dust Sources in the Western United States

    Dust is a significant component of visibility degradation in the western United States. As implied by the national goal defined in the Regional Haze Rule (RHR),1 only visibility impairments from man-made pollution must be prevented and/or remedied. However, dust sources, particularly fugitive dust sources, can result from both man-made and natural conditions. Historically, particulate matter (PM) ...


    By ENVIRON

  • The invisible fine dust

    Air is lifeblood. Daily we inhale approximately 15.000 liter. Still, the air contains invisible pollutants, which vary in its composition and concentration depending on the location. Especially the respirable particles with a diameter of less than 2.5 µm (PM 2.5) were considered to be particularly dangerous. According to a current study conducted by the Max Planck Society, ...

  • Down with road dust

    There are more than 3.9 million miles of roadway in the United States, according to the Federal Highway Administration, and, depending on the area of the country you're in, as much as 70% of that road mileage is unpaved. The 1997 U.S. Environmental Protection Agency (EPA) National Air Quality and Emissions Trends Report states that those unpaved roads--which can cover a wide range of ...


    By Cypher Environmental Ltd.

  • An end to the problem of particle emissions

    Austrian biomass heating systems guarantee an 80% cut in emissions. Recent studies have shown that these modern domestic boilers offer a significant reduction in particles, emitting fewer contaminating agents than previous generation boilers and wood stoves – with more than 100mg / ml of particles. The future will be based on new biomass combustion technology which cuts dust emissions from ...

  • Performance of the low-emission flare

    Job report / Elbisgraben (Bale / Switzerland) The summer of 1992 had finally arrived. The 5MW low emission furnace in the district heating station Liestal was ignited, supplied with landfill gas from Elbisgraben landfill. Since then the plant has been running continuously and the comprehensive measurements taken, verify that all targets aimed at have been achieved: plant ...


    By Hofstetter BV

  • `Sensitivity of Aermod in modeling fugitive dust emissions sources,` presented at guideline on air quality models: next generation of models conference 2009

    Abstract Dispersion modelers have long faced challenges estimating ambient pollutant concentrationscaused by releases from “fugitive” sources of particulate matter, such as paved and unpavedroadways, raw material storage piles, outdoor material processing operations, agriculturalactivities, or windblown dust in general. Fugitive emissions are commonly defined as those thatcould not ...


    By Trinity Consultants

  • Long-range transport of dust to the Baltic Sea region

    The origin of the September 2001 dust episode around the Baltic Sea was estimated by a model study to be the Ryn Peski desert of Kazakhstan. Some of the coarse particles came from Estonian–Russian sources where oil shale is used. Although the correlation of the high wind velocity over this desert with a corresponding weather system and the south-eastern flow is rather high, similar events can ...


    By Inderscience Publishers

  • Controlling Dust and Bioaerosols at a Biosolids Composting Faclity

    Studies at enclosed Longmont, Colorado project evaluate exposure level of employees. Operational changes reduce dust, endotoxin and A. Fumigatus by 90 percent. WHEN dealing with public health issues and composting, attention has been predominantly focused on potential exposure from the release of Aspergillus fumigatus (A. fumigatus) from composting facilities. Numerous studies were conducted to ...


  • Global Model Simulations of the Transport of Asian and Sahara Dust: Total Deposition of Dust Mass in Japan

    Abstract  We simulated the global transport of dust emitted from all major dust source regions on earth by using a global three-dimensional chemical transport model for the year 2000. A modified dust emission flux scheme and an advanced nonlocal diffusion scheme for accurately determining the atmospheric eddy diffusivity in the atmospheric boundary layer were implemented to improve the ...


  • Reduction in Airborne Dust and Cleaning Costs: Sale of Waste Limestone Dust - Blue Circle Southern Cement, Limestone Mine

    Background The Marulan South limestone mine is part of the Blue Circle Southern Cement company. It is situated on the edge of the Shoalhaven River gorge adjoining the Morton National Park 380 km south west of Sydney. The company supplies limestone to cement plants at Berrima and Maldon as well as the BHP steelworks at Port Kembla. The mine has a total production of three ...


  • Exposure to dust, endotoxin and airborne microorganisms in wastewater sludge thermal drying units

    The objective of this study was to assess workers' exposure to bioaerosols in sludge drying units. Simultaneous collection of inhalable dust and airborne biological agents was carried out using rotating cup samplers (CIP 10, Arelco). Sixteen stationary and 30 personal measurements were performed in three drying plants, during summer and winter. Microbial content of air was characterized by high ...


    By IWA Publishing

  • Manganese levels and chemical fractionation in street dust in South Africa

    Mn in street dust and soil from selected roads was studied to assess the contribution of combustion of vehicular methylcyclopentadienyl manganese tricarbonyl (MMT) to Mn levels and distribution in Pretoria, South Africa. Total Mn concentrations ranged from (329.1-863.9 μg g−1) for dust and (215.8-450.6 μg g−1) for soil. These values were significantly higher than the mean value (278.9 μg g−1) ...


    By Inderscience Publishers

  • Air–quality impact of PM10 emission in urban centres

    This paper calculates a detailed inventory of PM10 emissions in the urban area of Mendoza, Argentina, and evaluates the impact of such emissions by using the CALPUFF dispersion program. It includes direct and indirect emissions from mobile sources; emissions from industrial sources and fugitive emissions from unpaved road and dust production from bare land. The main results show the relevance of ...


    By Inderscience Publishers

  • Modelling emission, concentration and deposition of sodium for Poland

    The aim of this paper was to calculate natural and anthropogenic emission of Na+ and to estimate, with the FRAME model, annual air concentration and deposition of Na+ for the domain covering Poland. Calculations of natural emissions included marine emission and wind blown dust from land. Anthropogenic emission was calculated for both ...


    By Inderscience Publishers

  • Compliance to standards in continuous emissions monitoring case study

    Customer: Glass Manufacturer Application: Continuous Emissions Monitoring Service (CEMS) for Glass Manufacturing Background: A glass factory is required to ...


    By Ecotech Pty Ltd

  • Controlling Stack Emissions in the Wood Products Industry

    Electrostatic precipitation has been a reliable technology since the early 1900's. Originally developed to abate serious smoke nuisances, the manufacturers of zinc, copper, and lead quickly found electric gas cleaning a cost efficient way to recover valuable product carried out of the stacks from furnace operations. Today electrostatic precipitators are found mainly on large power plants, cement ...


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