Emission estimation calculators, booklet 1: chapter 8


Feed Manufacturing

The substances of concern released from the production of animal feeds are Criteria Air Contaminants (CAC).

Download spreadsheet calculator: Feed Manufacturing [xls 74 kb] (4 Feb 2009)

Suggested estimation methodology: Emission Factor

The general equation for emissions estimation is:

E = A x EF

where:

  • E = emissions
  • A = activity rate
  • EF = emission factor

Input Data

The activity rate (A) is the number of tonnes of grain received or processed. There are individual emission factors for Total Particulate Matter (TPM), Particulate matter with a diameter less than or equal to 10 micrometres (µm) (PM10) and Particulate matter with a diameter less than or equal to 2.5 micrometres (PM2.5) for each of the processes. The total emissions for each substance will be the sum of the each of the emissions for each process.

Part 4 Substance Releases

Total Particulate Matter (TPM) Footnote*
Process Emission Factor (EF)Footnote1 EF Units
Grain Receiving 0.0085 kilograms (kg)/tonnes of grain processed
Shipping 0.00165 kg/tonnes of grain processed
Handling 2.75 kg/tonnes of grain received
Grain Cleaning (Single Cyclone)Footnote** 0.0375 kg/tonnes of grain processed
Pellet Cooler (Single Cyclone)Footnote** 0.18 kg/tonnes of grain processed
Grain Milling: Hammermill (Single Cyclone)Footnote** 0.0335 kg/tonnes of grain processed
Grain Milling: Flaker (Single Cyclone)Footnote** 0.075 kg/tonnes of grain processed
Grain Milling: Grain Cracker (Single Cyclone)Footnote** 0.012 kg/tonnes of grain processed
Grinding 0.03 kg/tonnes of grain received
Particulate Matter less than or equal to 10 µm (PM 10) Footnote*
Process Emission Factor (EF)Footnote1 EF Units
Grain Receiving 0.00125 kg/tonnes of grain processed
Shipping 0.0004 kg/tonnes of grain processed
Handling 0.6875 kg/tonnes of grain received
Grain Cleaning (Single Cyclone)Footnote** 0.0095 kg/tonnes of grain processed
Pellet Cooler (Single Cyclone)Footnote** 0.09 kg/tonnes of grain processed
Grain Milling: Hammermill (Single Cyclone)Footnote** 0.017 kg/tonnes of grain processed
Grain Milling: Flaker (Single Cyclone)Footnote** 0.0375 kg/tonnes of grain processed
Grain Milling: Grain Cracker (Single Cyclone)Footnote** 0.006 kg/tonnes of grain processed
Grinding 0.03 kg/tonnes of grain received
Particulate Matter less than or equal to 2.5 µm (PM 2.5) Footnote*
Process Emission Factor (EF)Footnote1 EF Units
Grain Receiving 0.0002 kg/tonnes of grain processed
Shipping 0.0001 kg/tonnes of grain processed
Handling 0.1169 kg/tonnes of grain received
Grain Cleaning (Single Cyclone)Footnote** 0.0016 kg/tonnes of grain processed
Pellet Cooler (Single Cyclone)Footnote** 0.0153 kg/tonnes of grain processed
Grain Milling: Hammermill (Single Cyclone)Footnote** 0.0029 kg/tonnes of grain processed
Grain Milling: Flaker (Single Cyclone)Footnote** 0.0064 kg/tonnes of grain processed
Grain Milling: Grain Cracker (Single Cyclone)Footnote** 0.001 kg/tonnes of grain processed
Grinding 0.0051 kg/tonneof grain received

Note on Emissions Factors

The default emission factors are used in the table above, however if you have a site specific emission factor you would prefer to use you may enter it in the emission factor column. If you choose to insert your own emission factor ensure that the units have been converted accordingly.

Except where noted, the emission factors used in this spreadsheet are based on uncontrolled emissions. If you are using an emission control device you will have to adjust the emissions calculated by this spreadsheet according to the following formula:

Controlled Emissions = Uncontrolled emission x ((100 - control efficiency)/100)

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