CO2 trash dead plants

[tntradio12]

Hello,
I am a college student in bio.
One of my relatives asked me a question that I do not have the resources to answer. So I turn to you.
It has a greenhouse of plants. It introduces `` synthetic '' CO2 into the air, which promotes plant growth. He wants to know if firstly, the death of plants produces CO2 and is it considerable enough to use from now on that detritus of dead plants to provide its greenhouse with CO2 and abandon the synthetic.
(it uses between 1400 and 1600 ppm of CO2)
Thank you for taking the time to answer this question.

[chatelot16]

plant rot produces CO2, that's for sure! about as much as burning them, but it's slower

we can use this principle to make as much CO2 as we want ... remains to choose the means and size of the bazaar to get there and see if it is profitable

[Macro]

It produces CO2 but not only that ... Methane too ... And it will need a huge composter to power its greenhouses ..

[chatelot16]

methane is produced when there is complete absence of oxygen: you just have to want to make a methanizer to see how difficult it is to get rid of all the oxygen, as long as there is no methane left: this is what allows a compost heap or a manure heap to emit a derisory amount of methane

in nature the only case where methane is formed is in the mud at the bottom of the ponds

so no worries about the vegetation rotting to make compost makes CO2

[Did67]

But I agree with macro: thin layer and well ventilated!

Now, on the quantity that this represents, I admit that I have no references. Will this meet demand ???

The more so since for it to decompose quickly, heat is needed; but if it is too hot, the greenhouse will have to be opened and the CO² will escape (but it is the same if we inject "synthetic" CO²).

Otherwise,; priority should be given to rapidly fermentable organic matter: avoid especially wood (very slow decomposition) and too much cellulose (straws, old stems ...) ...

Finally, the source of CO² not to be neglected: fermentation (lost fruit, sugars ...)

Uh, this is local production of "fine herbs" ????

[Christophe]

Uh, the quickest way to get CO2 is to burn plants, huh, but there is smoke with ...

I do not think that the quantity of CO2 resulting from decomposition can be exploited in a greenhouse ... or else it is necessary to have another greenhouse producing CO2, the surface will have to be very very important in my opinion!

You just have to see the time it takes for a compost plant to degrade! Months, for years of wood ...

A weighing of the compost before / after would make it possible to estimate the CO2 produced ... (obviously at the same humidity level)

[chatelot16]

to burn makes CO2 but in general a lot of bizarre product in the smoke of which a lot of product is toxic: therefore to feed a greenhouse with smoke would be frankly smoky

making a waterproof composter ventilated by air circulation with a greenhouse would not be stupid: composting produces a lot of C02, not very useful for a production of pure CO2 since necessarily diluted in a lot of air, but quite useful to increase the C02 level in a greenhouse

[Christophe]

smoky certainly ... hence my smiley but there is always a way to purify fumes with a modest investment as long as we do not seek a quality of laboratory co2 ...

For the mailing, there is a paradox in this idea: we want a high concentration of co2 gold so that a compost produces co2 it is necessary oxygen so from a certain concentration of co2 the production of co2 will lower.

there is necessarily a point of equilibrium: is this concentration sufficient to boost the growth of plants?

[moinsdewatt]

It is not in Holland that they grow tomatoes in greenhouses with a CO2 enrichment that comes from thermal power plants?

[Christophe]

It's possible ! To check on the net ...

The CO2 must be purified and concentrated there ...