Hydrothermal liquefaction of sewer sludge pathway

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1 month 16 hours ago #565 by ikbiz
Hi,
I am trying to model the transformation of sewer sludge into bio-oil (as a final product) with hydrochar as a coproduct. 
Can the current pathway in GHGenius be used for hydrothermal liquefaction? If so, could you provide some guidance on the key parameters to keep in mind? 

Thank you.

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4 weeks 1 day ago - 4 weeks 1 day ago #566 by doconnor
Yes the current pathway can be used for your process.

There are three extra things to keep in mind for the pathway.
1. because there is so much variation in the bio-oil properties your actual valueless should be use on the Fuel Char sheet, row 79. Of particular importance are columns B and E.
2. The same applies for the biochar in row 132. Colum F is important is displacement is used for the co-product and column K if energy allocation is used.
3. On the Coprods sheet Z184 is the permanence factor for biochar applied to the soil. This varies with the feedstock and the process. The IPCC guidance in the 2019 Refinement of GHG Inventories has some information on this. www.ipcc-nggip.iges.or.jp/public/2019rf/...Ch02_Ap4_Biochar.pdf

Regards
Don O'Connor
Last edit: 4 weeks 1 day ago by doconnor.

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3 weeks 5 days ago #567 by ikbiz
Thank you very much for your help!

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