point source air emissions Articles
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Large-eddy simulation and practical models
A large-eddy simulation for a point source emission has been compared with four practical dispersion models suitable for regulatory purposes, and with atmospheric measurements. The large-eddy simulation calculates the turbulent velocity field in detail and uses this to solve the conservation equation for the pollutant. The practical models are variants of the Gaussian plume model. The ...
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Screening method for regulatory purposes in the Argentine Republic
This paper presents a comparison between the screening method in accordance with the requirements of the Argentine regulations and the detailed screening procedures recommended by the United States Environmental Protection Agency (US-EPA). Both methodologies are applied to different scenarios of point sources in rural and urban areas. The intercomparison between both screening estimations is ...
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Integrated gasification combined cycle (IGCC) air permitting: overcoming obstacles, maximizing flexibility, presented at EUEC 2010
Agenda 1.IGCC Process Overview Gasification system options and process flow diagram Process area and plant-wide air emissions summary 2.Gasification Block Sources Emission points and operating scenarios (OS) Short-term and annual emissions summary 3.Permitting and Compliance Strategies Permitting considerations for startup, shutdown, gasifier rotations, and malfunctions (SSM) ...
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Practical use of the ISCST3 model to select monitoring site locations for air pollution control
We present an objective methodology for selection of the minimum number of sampling sites required to register the highest concentration values of air pollutants emitted from a continuous point source. The methodology is based on the analysis of 1-hour concentration values above a threshold value estimated by atmospheric dispersion models. The number and location of the air monitoring stations ...
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Dispersion models and air quality data for population exposure assessment to air pollution
Evaluating the extent of exposure to chemicals in absence of continuous measurements of their concentration in air and direct measures of personal exposure is crucial for epidemiological studies. Dispersion models can be a useful tool for reproducing spatio-temporal distribution of contaminants emitted by a specific source. However, they cannot easily be applied to short-term epidemiological ...
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Estimation of dry deposition of atmospheric nitrogen to coastal waters of de la Plata River in front of Buenos Aires city
The deposition of atmospheric nitrogen (N) to surface waters of de la Plata River downwind of Buenos Aires city has been estimated using atmospheric dispersion-deposition models. The CALPUFF model has been applied to point source emissions and the DAUMOD-RD model has been developed to evaluate the area source emission contributions. Annual N dry deposition is 31,763 kg-N yr−1 (≈ 18 kg-N km−2 ...
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Aermod View - New Alpha Options in Aermod 22112
With the latest release of the AERMOD model dated 22112, the U.S. EPA has continued to expand the formulated capabilities of the model. Most of these updates have been added as ALPHA non-default options, a concept we covered in a previous modeling tip. AERMOD 22112 contains 6 new ALPHA options which are described below: Platform Downwash Taken from the Offshore and Coastal Dispersion Model ...
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