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A fish fertilizer company here has been adding biochar for the last few years with fantastic results for the vegetable growers. Their challenge is finding suppliers with consistent quality at reasonable prices.
main@Biochar.groups.io <main@Biochar.groups.io> On Behalf Of
Monday, February 15, 2021 12:20 PMTo:
Re: [Biochar] Need Help with Biochar in ag/water management
it is interesting when we talk to farmers in Australia. Most dont want to make it themselves but to buy it. If you can provide a biochar based fertiliser of animal feed char that makes them a profit they probably will pay up to 30% over a based fertiliser cost if they can see an improvement in their soils as well as yields.
We are working on a really neat organic high N and P fertiliser usign an invasive species of fish (carp) that has taken over our rivers. They are being culled and then hydrolysed. The company i work with mixes minerals and biochar with the extract to make a great fertiliser.
There are many ways to make cost effective biochar based fertilisers.
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
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
Limits to Dihydrogen Incorporation into Electron Sinks Alternative to Methanogenesis in Ruminal Fermentation
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
Have you studied the efficacy of just biochar without the enrichment that probably increases significantly the cost of the process
200 kg of chipped hemp fibre were used as the feedstock to produce the enriched biochar. Hemp was chosen as a biochar feedstock due to its porous structure enhancing its ability to adsorb.
- 20 kg of hematite(Fe2O3),
- 20 kg of melanterite (FeSO4·7H2O) and
- 20 kg of dolomite [CaMg(CO3)2]
were mixed into a slurry using 60–70 L of water and combined with the feedstock prior to pyrolysis.
This is a paper we published that may be of use to you.
On Sat, Feb 13, 2021 at 2:34 AM Harry Groot <harry@...> wrote:
Received an inquiry from a Lake States SWCD interested in the potential role bichar could play in ag drainage management. Specifically, the nutrients moving in those systems. Can anyone point me to published research on the topic, or direct me to anyone working in the ag-water space, specifically on how biochar may be able to mitigate nutrient runoff concerns?
I assume recycling the nutrient rich char back into the soil would be of interest...or should be...so experience or research in that practice would be useful, too.