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Upsetting the applecart #2 - driving better than walking

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Wireless:

--- Quote from: "biodiesel-queen" ---I think the fact that cows emit so much methane and other noxious gases doesn't help.  Apparently then burp far more than they fart.  Eueeww   :o .
Who'd have thought that Daisy and Buttercup were contributing so much to global warming.   :lol:
--- End quote ---


Methane is 20 times worse a greenhouse gas than CO2, which might be the reason that the figure for greenhouse gas emissions is so high; these figures are possibly given in terms of CO2 emissions, rather than actual CO2 emissions.

Did New Scientist explain exactly how they arrived at the CO2 emissions figure they quote?

thermidorthelobster:

--- Quote from: "Wireless" ---Did New Scientist explain exactly how they arrived at the CO2 emissions figure they quote?
--- End quote ---

No, but they link to the original research.  They were talking about CO2 equivalent emissions, not pure CO2 emissions.

clbarclay:

--- Quote from: "Range Rover Blues" ---Wish I could run my car on all those cow farts.
--- End quote ---


If reared in a suitable builing (draughty old pole barns are not) which collected rising gas then it can be done, but then you have the increase emissions of indoor feeding. Also it is possible to extract bio gas from dung and/or green waste.


I've seen similare investigations into whether bio fuel (typical from Oil Seed Rape) is energy beneficial, some reports finding the energy input requirement higher than the output making it unsustaiable, but then it all depends on how efficiently it is produced which can vary a lot.

thermidorthelobster:
How about a big balloon attached to the cow's ass?

clbarclay:
Ballons :?  :lol:

Methain rises being lighter than most atmospheric gasses, so if rises to a roof that funnels it towards the input of a compressor it can be collected and stored in presurised cyliders. Thats the basic theory, the practice is as always some what more comlicated.

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