Stephan, thanks! What I’ve seen is that the metals in biomass tend to get concentrated in the biochar fines during the pyrolysis process. Have you seen this effect? May suggest that fines are better f

#nutrients #phosphorous

PS For increasing the rate of adsorption of rhizodeposits and aggregate formation size and zeta potential (the charge on the surface of the biochar) does matter. Aging nd/or Adding metals/minerals bef

#nutrients #phosphorous

Limited work on best biochars for rhizodeposits but animal manure and straw seem to work best Some work on aggregates adn biochar. Google scholar will help. But here is some Incorporation of Biochar C

#nutrients #phosphorous

Hi Stephen, Are there certain types of biochar that more-readily protect rhizodeposits and form aggregates? Pyrolysis vs gasification? Biomass type? Is there an analysis that can be done on the biocha

#nutrients #phosphorous

Tom Our work shows how biochar can increase soil carbon and protect rhizodeposits. Essentially soil organic and mineral matter, root exudates and dead microbes are absorbed onto the outer and inner su

#nutrients #phosphorous

Thomas, As you state, some portion of the biochar carbon perhaps up to 15% is still reactive. Chemical reactions are oxidative or reductive. Ozone is extremely oxidative. The oxygen in air also, not a

#nutrients #phosphorous

Thomas, This is in response to your email about organic poultry and oxidation. I went to Cornell last month, before the shut down, and had a talk with Johannes Lehmann about poultry houses and biochar

#nutrients #phosphorous

The comment about biochar aging in the soil and oxidizes does not seem to make sense. The early research measured soil carbon and the BC added to that soil, then came back in a few months to a year an

#nutrients #phosphorous

Dr. James Weifu Lee at Old Dominion University has published papers and made presentation on the process. See his 2018 presentation at: https://biochar-us.org/presentation/biochar-surface-oxygenation-

#nutrients #phosphorous

Jurgen, my understanding of biochar is that as it ages in the soil, it oxidizes. I can see how gaseous ozone would accelerate the process. Not familiar with any studies. Rick

#nutrients #phosphorous

I do understand the basics of Ozone chemistry, but I'm curious if "ozonizing" biochar specifically is something that has more history behind it than this study, especially because in this abstract the

#nutrients #phosphorous

Tom, Thanks this abstract. Wonder if putting wood char and bone char in hydrogen peroxide would achieve a similar oxidation outcome, as well as, just bone char in hydrogen peroxide......... my 2 cents

#nutrients #phosphorous

Jeurgen, see this website shows you the ozone chemistry. Ozone will react reddily with double bonds, so I assume it is doing this in their study. (This company website, we are using this to destroy co

#nutrients #phosphorous

Ask James Weifu Lee at Old Dominion https://scholar.google.com/citations?user=IC6IOeoAAAAJ&hl=en https://www.odu.edu/directory/people/j/jwlee Tom

#nutrients #phosphorous

"ozonized"..? I didn't know this was a thing. How does it work? - Jürgen

#nutrients #phosphorous

Thanks Tom, My impression had been that the reason biochar increased Phosphorous solubilization, which was a benefit unique to acidic soils, was because biochar is alkaline it increased pH. Phosphorou

#nutrients #phosphorous

Conversion of phosphorous: https://pubs.acs.org/doi/abs/10.1021/acssuschemeng.0c00601 Sustainable Chemistry: Solubilization of phosphorus from insoluble phosphate material hydroxyapatite with ozonized

#nutrients #phosphorous

Tom Martwick: Please consider doing a write-up of the experience, being very specific about the sources and ratios of worm compost and biochar mix. If you call me at 630-321-1095, I can supply some re

#nutrients #phosphorous

Hello, Eli and Anand. Thanks for your posts. The video under discussion here is "The Roots of Your Profits" https://www.youtube.com/watch?v=x2H60ritjag I reiterate that I am not a soil scientist, so t

#nutrients #phosphorous

Could first season failure be avoided by soaking the biochar in only urine and applying extra urine to the soil with the biochar? Kevin

#nutrients #phosphorous