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Air Pollution - OSTI GOV

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Last Updated: 08 August 2022

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Simulation-Based Analysis of Impacts of Reduced Envelope and Duct Air Leakage on Indoor Air Pollutant Concentrations in Occupied Manufactured Homes

This report presents an example of indoor air pollutant concentration shifts that could result from the new energy conservation regulations, based on a simulation-based study. Acrolein, formaldehyde, fine particulate matter, and nitrogen dioxide were all found in household simulations, with four air pollutants that can reach dangerously high levels: formaldehyde, fine particulate matter, and nitrogen dioxide. The simulations included acrolein and formaldehyde emitted from continuous indoor sources; acrolein, NO 2 and PM 2. 5 from cooking; and NO 2 and PM 2. 5 from dispersed occupant activities; and NO 2 and PM 2. 5 from outdoor, using historical records to determine average values.

Source link: https://www.osti.gov/biblio/1875257


Idaho National Laboratory CY 2021 National Emission Standards for Hazardous Air Pollutants Analysis, Methodology and Results for Radionuclides

This paper details estimations of potential dose at public receptor locations around the Idaho National Laboratory Site boundary and INL in-town facilities, which have been traced to be in use and potentially discharged from INL facilities during calendar year 2021. INL Report on Radionuclides is a publication that links to the U201cNational Emission Standards for Hazardous Air Pollutants. The estimated annual potential dose at the INL Site MEI location in CY 2021 was 6. 67E-02 mrem/yr, up slightly from the previous year, but less than the minimum requirement of 10 mrem/yr. Approximately 97% of the total dose to the INL Site MEI came from MFC sources. Emissions from INL's in-town facilities resulted in an estimated annual potential dose of 6. 21E-03 mrem/yr to the MEI, down 40% from the CY 2020 average dose.

Source link: https://www.osti.gov/biblio/1876903


Agricultural Impacts on Nitrogen Cycling: Climate and Air Pollution (Final Technical Report)

From agricultural to Earth System Models, we have successfully calibrated ammonia emissions from synthetic fertilizer and manure from agriculture. We've investigated the effects of agricultural ammonia emissions on current-day air quality and have assessed the consequences of dealing the emissions with high temporal resolution. We also investigated how Earth System Models model soil cycling, which results in soil erosion. We have given a major update to the process model FAN, which simulates NH3 emissions interactively within an Earth system model; in this work, the Community Earth System Model is used. Based on gridded datasets of fertilizer use and livestock populations, the simulated ammonia emissions were first assessed at a local scale against experimental results for various types of fertilizers and manure, and they were then used globally to monitor NH3 emissions for 2010–2013.

Source link: https://www.osti.gov/biblio/1725771

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions