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Group and especially Rob Lehmert,
Sodium (Na+) is the most water soluble of all the common cations, so it is retained on biochar with the lowest force and displaced by essentially any other cation or heavy metal cation.
I would not recommend biochar to remove sodium to any appreciable extent or cost-effectively.
- Hugh McLaughlin, PhD, PE
On Tuesday, November 3, 2020, 11:24:30 AM EST, Robert Lehmert via groups.io <roblehmert@...> wrote:
That should improve soil health, but I'm looking for something different -- I want to adsorb Na onto biochar and retain it.
I imagine biochar naturally adsorbs some amount of Na -- although I have not seen any studies.
Does anyone know chemical bonds to improve that Na-BC adsorption process? Hugh McLaughlin and/or Chuck Hegberg perhaps?