chenbeier

You have to use glass or ceramic material . Best is to use a vacuum fritte. https://de.m.wikipedia.org/wiki/Fritte_(Filter)#/media/Datei%3ASintered_glass_funnel-02.jpg

Definition here: https://energyhq.com/2017/04/upstream-midstream-downstream-whats-the-difference/

chenbeier :What kind of Butter, Almond Butter ? Rapeseed Oil left me a little uneasy after reading how it is made : https://www.smartholistics.co.uk/news-blog/the-dark-side-of-rapeseed-oil/ I mean normal butter made from milk from cow what you put on a bread. Also magarine is possible. Instead of the raps seed oil every oil made from plant is ok, so you found already oleate, made from olive oil or cocoate made from coconate oil. You can also melt candle wax mix with Soda.

@Erina , Alkalinity is not enough to have good Washington results. You need surfactant, add Butter, Raps oil to the Soda and boiling the solution.

No its alkaline compound pH 10 -11

If sulfur compounds with Oxidation number less + 6 then hydrogensulfide can be obtained. Hydrogen is a Reduction agent in Status nascandii.

Some ideas can find here https://en.m.wikipedia.org/wiki/Volatile_fatty_acids_analysis

Not to forget all the minerals left in the ash. The name pottash is coming from that. Mainly potassium carbonate. Carbon itself as charcoal is more less like aktive coal. This probably will remain long time.

Generally to answer the headline. The carbon is burnt to carbondioxide and this can be used again to produced new plants.

Better is to go to a school for chemistry instead to do Experiments at home. I think it will be difficult to get chemicals for normal persons anyway.

That is not the goal. The goal was to remove CO2 from the carbonate solution by Ventilation. It is clear if we add acid to it. But then we exchange carbonate to another anion from that acid. I think he is still looking to "Filter" the carbonate.

The difference is on one side you have CO2 dissolved in water. This can be removed easily on the other side you have alkali cathions additionally. Its the same you dissolve CO2 in NaOH for example. This cannot remove.

Only as carbon dioxide in water, like Soda drinks decompose if they stand long time around. But in combination with a metal cathion, its not possible.

The urea is more or less decomposed by the acid, there is nothing to purify.

The expenditure is to much. Throw it a way and buy new one. The acid will decompose the urea anyway to ammonium, nitrogen oxides and carbondioxide.

Yes it does depending on the soloubility product. Na2CO3 => 2 Na+ + CO3 2- max. 217 g/l CaCO3 => Ca2+ + CO3 2- max. 14 mg/l

But this is not filtering, its other kind of removing.

No, Filterung is only possible from something what is not solouble. Like Coffee from insouloble crashed Coffee beans.

I would think so, or use reverse osmosis.

Ok, right. But still difficult to get clean K2O. All methode to produced K2O dont use Carbonate. Check here below the point production https://en.m.wikipedia.org/wiki/Potassium_oxide

Its kind of polarisation, but how will you control it, that no reaction takes place. To keep voltage below redoxpotential, but is it enough. The goal of ion exchange is to get DI water at the end.

Do you know the Soda potash digestion. This is used in analytical chemistry. The carbonate of sodium and pottasium are very stable. The decomposition will take place beyond boiling point. With other words with burning its not possible to obtain Potassium Oxide. https://en.m.wikipedia.org/wiki/Potassium_carbonate

Thats correct. But for this reason you need diaphragma compartments that NaOH is not reached the Anode. And also the right current density, so no Oxidation to chlorate takes place. Tons of NaOH is produced in this way.

But you need very high temperature to transfor to K2CO3 => K2O+ CO2 This KOH will be not clean from carbonate. Better is to use electrolysis with a diaphragma. The same way NaOH is produced.

Yes, that is a common technical procedure to do electrolysis. Instead of a metal, also a Graphite Elektrode can be used. If you have salt water NaCl, then on Anode chlorine gas and on cathod side hydrogen will be developed. Sodiumhydroxide will remain.