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EnviroLink Forum • View topic - THE CO2 CONTRIBUTION OF CRUDE OIL TO THE EARTHS ATMOSPHERE

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PostPosted: Wed Nov 16, 2011 3:26 pm 
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Hi All, I am all for saving the world (or for trying to slow down the constant changing of the planet). Like all of us I am also very much concerned about the ever warming climate and the probable results of that.
The "carbon footprint" of things seems to be the biggest single cause of the problem. The "brainwashers" of this world have pretty much succeeded in making us belief that it is the "human carbon footprint" which is the main culprit for global warming especially the use of crude oil (fossil fuel) - but is it really ?
The world currently use about 90 million barrels of crude a day which is about 0.0143 cubic kilometers of oil a day x 3 (the scientists say that burning one barrel of crude produces about 3 times the amount of CO2) x 365 (days in a year) x 160 years (that's about how long humans have used crude oil in large quantities) = approx 2,500 cubic kilometers of CO2 produced by all the crude used over the last 160 years by us humans - it is probably much less as we did not consumed 90 million barrels a day right from the start but slowly buid up to that quantity over the 160 years.
The newspapers have reported that the volcanic outburst a while ago that caused so much problems for the airlines, has spewed more than 20,000 cubic kilometers of CO2 into the atmosphere in just 6 days - that is 8 times more than all the crude released over 160 years did!
I think that the amount of CO2 released into the atmosphere by all the volcanic eruptions over the last 160 years is vastly more than that of all the crude used over the same period.
I have read that the amount of CO2 released annually by veld fires around the world is also much more that released by crude in the same year.
The amount of CO2 exhaled per year by the 7 billion people on earth (not even taking the animals into account) is more than the amount of CO2 released per year by burning crude! Crude oil probably contributed less than 1 part in 2,000,000 towards the total CO2 being released into our atmosphere over the last 160 years. I know every little bit helps but are we not perhaps worrying ourselves to death over one little raindrop in a heavy rainstorm?
Regards, Eddie


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PostPosted: Wed Nov 16, 2011 8:04 pm 
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Man's production of CO2 isn't confined to crude oil : you've left out coal, wood burning and the damage we cause by forest clearing: which removes healthy, co2-removing trees.

I also believe you'r take on volcanoes is incorrect and their have been studies stating so.

The sooner we move from oil as a motive-force to cleaner sources, the better.


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PostPosted: Wed Nov 16, 2011 8:34 pm 
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PostPosted: Thu Nov 17, 2011 5:52 am 
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I was going to say 'hello' eddie, but I'm wondering if you're still here after Wayne's cannonade!

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PostPosted: Thu Nov 17, 2011 6:03 am 
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PostPosted: Thu Nov 17, 2011 7:52 am 
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PostPosted: Thu Nov 17, 2011 1:46 pm 
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LOL! Thank you, Wayne, for informing another ignorant skeptic of the real facts. There are so many of them, ignorant of AGW, ignorant of ecology, ignorant of basic math, and ignorant in general.
Then you have the mentally ill ones posting here, like mothy, who I think should be banned. ](*,) :crazy: :x [-(

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PostPosted: Sat Nov 19, 2011 6:51 am 
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PostPosted: Wed Apr 11, 2012 1:43 am 
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i think that the one thing is confirm that the crude oil contribute to the global warming and the production of co2 not confine the crude oil and in some factories there is no use of the coal and the wood burning they produce oil while using a garbage waste material and fulfill their needs.so CO2 effects.


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PostPosted: Wed Apr 11, 2012 10:25 am 
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I like to do things myself as the original poster of this thread did so here is my attempt:

a little bit of chemistry: most oil-based fuels have at least 7 carbon atoms in each molecule and most of the rest of the molecule is hydrogen... the smallest atom. Carbon Dioxide (CO2) has one carbon atom and 2 slightly bigger oxygen atoms. If we compare molecules, one gasoline molecule (mostly heptane - 7 carbons), when completely burned, produces 7 molecules of CO2 which all weigh a bit more then 3 times as much as the carbon alone. That hydrogen has no neutrons in it's nucleus so it's molecular weight is about 1 and carbon is about 12 and heptane would have 7 x 2 + 2 = 16 hydrogen atoms. For simplicity that is about the same as 8 carbons for heptane making about 7 x 3 = 21 carbons-worth of CO2. Oxygen is about 15 for molecular weight so we can correct that as (15+15+12)/(12 x 3) x 21 = 24.5 or an expansion factor of about 24.5/8.2 = 3.

world crude oil consumption for 2010 is a bit more then 87,000 thousand barrels (). Assuming a gradual steady increase since 1925 to 2010 (see graph below), the triangle formed is half the area so an estimate is going to be 87,000 x (2010-1925) / 2 = about 3 700 000 thousand barrels. A barrel of Texas crude is 138.8 kg. One range I found was 125.600 154.695 (depending on type) so lets use 140 kg. I will use tonnes instead of tons (a ton is about 9/10 of a tonne) which are 1000 kg. This then gives us 3 700 000 000 x 140 x 3 / 1000 = 1 554 000 000 tonnes of CO2. This is of course only crude oil and does not include natural gas (1 carbon atom and 4 hydrogen so also expands about a factor of (15 + 15 + 12)/(12 + 4)= 2.625) and propane (42 x 3 / ((3 x 2 +2)+(3 x 12))=2.864) which account for more carbon then crude by far.

edit: I am not done... we need to know how many cubic kilometers of CO2 that is for the comparison. The density of CO2 at sea level (STP = Standard Temperature and Pressure) is 1.9769 g/L and on average, it will be half that (as we move toward outer space). A liter is a cubic decimeter and 10 000 decimeters is a kilometer so there are 10 000^3 = 1 000 000 000 000 liters in a cubic kilometer and 1000 000 g in a tonne. This makes the calculation to be 1 554 000 000 x 1 000 000 x 2 / 1.9769 / 1 000 000 000 000 = 1 572 cubic kilometers. That still seems small.

edit 2: haha... that consumption number was PER DAY! That makes my totals to be 574 173 cubic kilometers (and about 567 000 000 000 tonnes)
Image
edit 3: a more careful estimation of total use using that graph could be:
130 x (1970-1925) / 2 + 70 x (2012-1970) + (130-70) x (1980-1970) /2 = 6 165 000 000 "bbls" (compared to my first estimate of 3 700 000 000). This makes for a correction factor of 5/3 (1.66621) so we now get 956 700 cubic kilometers of CO2.


Last edited by Ann Vole on Wed Apr 11, 2012 2:00 pm, edited 2 times in total.

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PostPosted: Wed Apr 11, 2012 12:36 pm 
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