12.1 Primary Aluminum Production
For Supplement D to the 5th Edition, the tables with metric units were removed and some text and emission factors were added for the Greenhouse gases (CO 2, CF 4, and C2F6). April 2007. Editorial corrections were made. In Table 12.1-2, the total cumulative emissions factor for Prebake Aluminum Cells was corrected from 2.5 to 5.0 lb/ton.
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Appendix A.2 Emission factors for particles from uncontrolled
bauxite grinding 3.00 crucible furnace 0.95 prebake cell 47.00 reverberatory furnace 2.60 secondary aluminum smelting crucible furnace 0.95 reverberatory furnace 2.15 sweating furnace 7.20 gray iron fugitive emissions cleaning, finishing 8.50 cooling 5.00 core making, baking 0.60 inoculation 1.5-2.5 magnesium treatment 2.50 pouring 2.50
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Emission Factor Documentation for AP-42 Asphalt Roofing …
An emission factor relates the quantity (weight) of pollutants emitted to a unit of activity of the source. The uses for the emission factors reported in AP-42 include: 1. Estimates of areawide emissions; 2. Estimates of emissions for a specific facility; and 3. Evaluation of emissions relative to ambient air quality.
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Particulate Matter (PM) Emission Factors for …
Where: E TP. = Emission (tons/year) = Annual Throughput EF = Emission Factor The unit for TP in this equation must be consistent with the unit of EF. For example, if EF is in pound per ton of material transferred (lbs. /ton), then TP must be tons of transferred material. For unique emission sources, additional data must be used in determining ...
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Preferred and Alternative Methods for Estimating Emissions …
available emissions estimation methods: stack sampling, emission factors, continuous emissions monitoring systems, and material balance. Section 4 presents the preferred methods which differ depending on the process and pollutant for which an estimate is to be made. Section 5 presents the alternative methods. Quality assurance
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Emission Factor Documentation for AP-42 Portland Cement …
An emission factor relates the quantity (weight) of pollutants emitted to a unit of activity of the source. The uses for the emission factors reported in AP-42 include: ... and finished cement grinding. Each of these process components is described briefly below. The focus of the discussion is on pyroprocessing operations, which constitute the ...
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AP-42, Appendix B.2 Generalized Particle Size Distributions
Figure B.2-1 provides an example calculation to assist the analyst in preparing particle size-specific emission estimates using generic size distributions. Identify and review the AP-42 section dealing with that process. Obtain the uncontrolled particulate emission factor for the process from the main text of AP-42, and calculate uncontrolled ...
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Emission Factor Documentation for AP-42 Section 9.5.3 …
This section provides an overview of the U. S. for human consumption (edible rendering) and products rendering). This section is divided into four description (2.2), emissions (2.3), and emission included in Standard Industrial Classification. Rendering plants process animal by-product high-protein meat and bone meal.
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I AP42 Section: 10.1 Emission Factor Documentation for 10
routinely published to add new emission source categories and to update existing emission factors. AP-42 is routinely updated by EPA to respond new emission factor needs of EPA, State, and local air pollution control programs, and industry. An emission factor is a representative value that attempts to relate the quantity of a pollutant
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Emission Estimation Technique Manual
Emission Factors for Secondary Magnesium Smelting 24 14 - PM 10 Emission Factors for Secondary Zinc Melting 24 15 - Fugitive PM 10 Emission Factors for Secondary Zinc Melting 25 16 - Lead Emission Factor for Solder Manufacturing Facilities. 27 17 - Default PM 10 Collection Efficiency Values for Pollution Control
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The analysis of particles emission during the process of grinding …
A shape factor of particles was determined using the circularity, roughness, and aspect ratio. ... THE ANALYSIS OF PARTICLES EMISSION DURING THE PROCESS OF GRINDING OF STEEL EN 90MnV8 dibenzo-p ...
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Estimating Emissions From Generation and Combustion Of …
makes the estimation of emissions from them very difficult. Many of the processes and operations are covered in EPA's Compilation of Air Pollutant Emission Factors (AP-42), which stands as the basic reference. However, from time to time that document may not adequately address process, specific
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AP-42 9.9.1 Grain Elevators And Processes
9.9.1-2 EMISSION FACTORS 4/03 elevator. Barges are unloaded by a bucket elevator (either a continuous barge unloader or marine leg) ... the moisture of the wheat to make it easier to grind. When the grain reaches the proper moisture level, it is passed through an impact machine as a final cleaning step. The wheat flows into a grinding bin and
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What are emission factors? And where can I find them?
Emission Source Example EF Units Considerations; Stationary combustion • kg CO 2 / tonne • kg CO 2 / Btu or MJ • kg CO 2 / scf or m 3 • kg CO 2 / gallon or L: EFs are generally estimated based on sample measurements of the average carbon content of the fuel and then applied to activity data collected in energy units (e.g., MJ or Btu) rather …
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Emission Estimation Technique Manual
Emission Factors for Printing Ink Manufacturing a.....39. 3 Approved 25/6/98 1.0 Introduction The purpose of all Emission Estimation Technique (EET) Manuals in this ... Pigment grinding or milling entails the incorporation of the pigment into the paint and ink vehicle to yield a fine particle dispersion. The three
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Foundry Process Emission Factors
emission factors for various foundry processes. These emission factors will be used to: (1) establish and evaluate options for air quality regulations or standards, (2) develop source-specific emission factors for use in emission …
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Background Report AP42 12.18 Lead-Bearing Ore Crushing …
existing emission factors. AP-42 is routinely updated by the EPA to respond to new emission factor needs of the EPA, state and local air pollution control programs and industry. An emission factor relates the quantity (weight) of pollutants emitted to a unit of activity of the source. The uses for the emission factors reported in AP-42 include: 1.
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Emission Factor Documentation for AP-42 Abrasives …
An emission factor relates the quantity (weight) of pollutants emitted to a unit of activity of the source. The uses for the emission factors reported in AP-42 include: ... diversified and includes the production of grinding stones and wheels, cutoff saws for masonry and metals, and other products. Coated abrasive products manufacturers include ...
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AP 42 Section 4.4 Polyester Resin Plastic Products Fabrication
May 1, 2008 Table 4.4-2 Emission Factors For Uncontrolled Polyester Resin Product Fabrication Processes was updated with the following footnote: "Users found that use of emissions factors for open molding processes from reference 9 generally underestimated emissions. As an alternative to estimating open molding emissions …
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Carbon monoxide emission rates from roasted whole bean and …
Grind level for the "packaged as ground coffee" is assumed to be a medium grind because these coffees were intended for drip coffee makers. One coffee sample was packaged in a tin with valve on the top with the rest packaged in bags with valves. ... Emission Factor Documentation for AP-42, Section 9.13.2: Coffee Roasting, Final Report; EPA ...
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AP 42, Fifth Edition, Volume I
10.0: Introduction to Wood Products Industry : 10.2: Chemical Wood Pulping : Final Section - September 1990 (PDF 268K) . 10.5: Plywood Manufacturing : Final Section - Update 2002, January 2002 (PDF 83K); Background Document - July 2003 (PDF 565K); Related Information - The data that supports the emissions factors are presented in summary in …
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Emission Factor Database — European Environment Agency
Emission Factor Database. PDF. Last modified 23 Nov 2020. 1 min read. This viewer presents selected emission factors and abatement efficiencies included in the EMEP/EEA Guidebook 2019. Information is ordered by the respective Nomenclature For Reporting (NFR) source category code. Not all emission factors included in the …
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Default Combustion Emission Factors
Ammonia Emission Factors. Ammonia is required to be annually reported and its annual emissions threshold (200 pounds) is presented in Table III of Rule 301.Default ammonia emission factors fromfuel combustion can be found in Appendix B of the . AB 2588 Quadrennial Air Toxics Emissions Inventory Reporting Procedures, June 2020.
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11.24 Metallic Minerals Processing
Also the emissions factors and size distributions in the second and third columns for Prebake Aluminum Cells and HSS Aluminum Cells are fugitive emissions …
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Air Emission Factors for Metals Finishing Operations
An emission factor relates the quantity of a pollutant released to the atmosphere with a specific activity or in this case a specific process. Emission factors summarized for …
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Emission Factor
Emission Factors. Emission Factors. An emission factor is a representative value that attempts to relate the quantity of a pollutant released to the atmosphere with an activity associated with the release of that pollutant. These factors are usually expressed as the weight of a pollutant divided by a unit weight, volume, distance, or duration ...
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Emission Factor Documentation for AP-42 Section 4.12, …
The results of the project and the emission factors now available are discussed below: 1.2 Emission Factor Project Definitions The following is a brief list of key definitions which define pollutant categories measured in the test program, as well as terminologies which will assist the reader in interpreting the emission factor data
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12.13 Steel Foundries
12.13.2 Process Description1 Steel foundries produce steel castings by melting scrap, alloying, molding, and finishing. The process flow diagram of a typical steel foundry with …
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11.17 Lime Manufacturing
more representative of emissions from stone crushing, grinding, and screening. In addition, Section 13.2, Fugitive Dust Sources, includes emission factors for materials handling that may be more representative of ... Emission factors for emissions of SO 2, NO x, CO, and CO 2 from lime manufacturing are presented in Tables 11.17-5 and 11.17 …
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Emission Factor Documentation for AP-42 Section 11.19.1 …
routinely published to add new emission source categories and to update existing emission factors. AP-42 is routinely updated by EPA to respond to new emission factor needs of EPA, State, and local air pollution control programs, and industry. An emission factor is a representative value that attempts to relate the quantity of a pollutant
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