RNG AD Co-products

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8 months 1 week ago #253 by Filzah
RNG AD Co-products was created by Filzah
Hi,
I am wondering how the factor for emissions displaced by AD (Coprods, Cell A45) is calculated. Is there a reference available for the value of 20kgCH4/manure utilized? As this seems to drive RNG from AD emissions it would be helpful to understand how this value was determined.

Also could you confirm that avoided landfill emissions are only calculated for organic waste and no other feedstocks (for RNG)?

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8 months 1 week ago #256 by doconnor
Replied by doconnor on topic RNG AD Co-products
There is not a lot of information on this topic. The California Air Resources Board has they values which drive hugely negative emissions for AD RNG but the data in Canada is sparse.

ww2.arb.ca.gov/sites/default/files/barcu...ivestockprotocol.pdf

Two references that I have found are
cdnsciencepub.com/doi/10.1139/cjas-2015-0111
and
www.researchgate.net/profile/Francis_Lar...anure-Composting.pdf

Regards
Don O'Connor

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1 month 3 weeks ago #349 by mubene
Replied by mubene on topic RNG AD Co-products
Hello,

Do you know if there is a way to "turn off" the emissions displaced by AD in the coprods tab? I have tried to just change the number to zero but the results haven't changed.

Thanks!
Mitchell

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1 month 3 weeks ago #352 by doconnor
Replied by doconnor on topic RNG AD Co-products
This is done in different places depending on the feedstock.
Organic Waste - Input F47
Manure - Coprods A45
Digestate - Input AK and AL rows 279 to 280

Regards
Don O'Connor

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