Tomaso Bertoli - CISV
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Thanks for the more detailed explanation about cation and anion capacity
Industrially “produced” and “commercialized” biochar has a high price … but many (auto) produce biochar at much lower perceived cost (discounting one’s own labor)
Therefore promoting and valuing the NPK adsorption capacity of untreated char is in a different market \ mindset from the one you are pursuing
Da: main@Biochar.groups.io <main@Biochar.groups.io> Per conto di Stephen Joseph
Biochar is much more expensive than the minerals in the enrich version in the Australian context. Most biochrs here (except for SIMCOA sell for over $ Aus1000/tonne. Even in China in the large plants it sells for over $600/tonne.
You can buy most minerals in bulk for less than this.
But we know for increase anion exchange capacity you need to add minerals and/or acidify. See Joseph
Joseph S., Kammann C. I., Shepherd J. G., Conte P., Schmidt H-P., N. Hagemann, A. M. Rich, C. E. Marjo, J. Allan, P. Munroe, D.R.G. Mitchell, S. Donne, K. Spokas and E. R. Graber (2017) Microstructural and associated chemical changes during the composting of a high temperature biochar: Mechanisms for nitrate, phosphate and other nutrient retention and release . STOTEN , 618, 1210–1223
On Sat, Feb 13, 2021 at 9:30 PM Tomaso Bertoli - CISV <tomaso.bertoli@...> wrote: