RE: [Biochar] A paper linking biochar to DACS (strongly)

by (updated on )







Ronal,

 

THANK YOU!!!  You call our attention to biochar issues that would slip past most of us.   Yes, a use for the heat from clean pyrolysis.   Let it be DACS if that avenue opens up.

 

It would be good to have a paragraph summary of the financial impact of having a recognized value for Biochar heat with BOTH SIDES (biochar and DACS) showing improved values.  

 

About scale:  Is there (or could there be) a minimum VIABLE size of DACS unit that could match with XXX amount of biochar heat.   Then the dispersed nature of biomass could service many DACS units instead
of planning for gigantic DACS facilities that would require transport and other costs to get the biomass to a pyrolysis unit at that DACS facility.

 

Paul

 

Doc / Dr TLUD / Paul S. Anderson, PhD

Email: 
psanders@ilstu.edu       Skype:   paultlud     Mobile & WhatsApp: 309-531-4434

Website:   
https://woodgas.com see Resources page for 2023
“Roadmap for Climate Intervention with Biochar” and 2020 white paper, 2) RoCC kilns, and 3) TLUD stove technology.                       

 

From: main@Biochar.groups.io <main@Biochar.groups.io&gt;
On Behalf Of Ron Larson via groups.io

Sent: Saturday, June 29, 2024 4:14 PM

To: Biochar.groups.io <main@biochar.groups.io&gt;

Cc: tengzhou@hkust-gz.edu.cn; tengzhou@ust.hk

Subject: [Biochar] A paper linking biochar to DACS (strongly)

 

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List: and article corresponding author Zhou (aside: –  I would appreciate a copy)

1.   A Google message to me had this fee-needed article: at https://www.sciencedirect.com/science/article/abs/pii/S0009250924007231  

Assessing the future impact of 12 direct air capture technologies

2.  The final sentence of the abstract says (emphasis added):

“ Finally, in all the different scenarios, the DAC technologies incorporating high-temperature
calcination regenerations exhibit the worst performance due to the lack
of low-emission energies for generating fired heat.”

3.  The one thing (EVERY?)  biochar system has is an excess of heat.  Even better – that heat is negative emission – not low-emission.  That heat will
not have low cost – it will also have negative costs.

4.  I have not been a DACS proponent, but this is a winner I support today   – assuming Zhou and others have a solution to the CO2 disposal problem.  Maybe especially
in China, which I suspect is the un-acknowledged leader today in biochar production.  Certainly the leader in biochar research papers (2 or 3 per day?).

 

5.  This use of biochar systems for DACS takes nothing away from any of the other (and
many) benefits of biochar.   I’ve seen biochar linked before to DACS – but never this strongly.

 

6.  To repeat,  I would love a copy of the paper – from anyone.  Maybe we can get our DoE to finally
pay attention to biochar.  Their favorite CDR approach is certainly DACS – not biochar.

 

Ron

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