June 19, 2019, 09:21:04 AM
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Topic: How is organnic carbon created?  (Read 200 times)

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Offline patfada

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How is organnic carbon created?
« on: June 01, 2019, 12:37:07 AM »
I have read that photosynthesis does not break the carbon oxygen bond in carbon doxide but incorporates the CO2 into carbohydrates, and that it takes a lot of energy to split CO2 into its constituent elements. Fossil fuels are composed of hydrocarbons in which the carbon is bonded to hydrogen not oxygen, so somewhere along the line something has done the work to break the carbon oxygen bond. Does this happen as part of the process of fossilisation - e.g as a result of high pressure and temperature? Or is it the result of a biological process?


Thanks

Pat

Offline AWK

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Re: How is organnic carbon created?
« Reply #1 on: June 01, 2019, 03:06:23 AM »
Quote
I have read that photosynthesis does not break the carbon oxygen bond in carbon doxide but incorporates the CO2 into carbohydrates
not true
Assimilation of carbon dioxide is possible by breaking one bond in this molecule.
Quote
Fossil fuels
This is a big problem of organic geochemistry - there are many monographs on this subject. A good start can be encyclopedic entries regarding The Carboniferous Era (the period in earth history)
AWK

Offline Borek

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Re: How is organnic carbon created?
« Reply #2 on: June 01, 2019, 03:54:26 AM »
Does this happen as part of the process of fossilisation

Generally speaking - yes, dehydration of carbohydrates is part of the fossilization (this is not entirely equivalent to just the breaking of the C-O bond). As AWK signalled, details can be quite complicated.
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Offline wsohcontest1

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Re: How is organnic carbon created?
« Reply #3 on: Yesterday at 02:51:31 AM »
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