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- From: jgacker@news.gsfc.nasa.gov (James G. Acker)
- Subject: Re: Natural Gas?
- Message-ID: <1992Dec21.150219.23372@nsisrv.gsfc.nasa.gov>
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- Organization: Goddard Space Flight Center
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- References: <JMC.92Dec20223032@SAIL.Stanford.EDU>
- Date: Mon, 21 Dec 1992 15:02:19 GMT
- Lines: 50
-
- John McCarthy (jmc@SAIL.Stanford.EDU) wrote:
- : I don't understand what this 575 Tg/yr is. If it is spontaneous
- : emission through the soil all over, it is extremely difficult
- : to capture for human use. Must we spread plastic over the whole
- : world including the oceans and then separate out the CH4?
- : Anyway 575 Tg is only 575 million tons. The U.S. used to produce
- : 500 million tons of petroleum, and in 1988 produced 288 million
- : tons of natural gas. It appears, therefore, that collecting the
- : surface emissions from the entire world would not satisfy U.S.
- : domestic needs.
-
- : Avoiding mining is a fantasy. Why do you think we should?
- : --
- : John McCarthy, Computer Science Department, Stanford, CA 94305
- : *
- : He who refuses to do arithmetic is doomed to talk nonsense.
- :
-
- I don't think the issue is avoiding mining, but doing less of it.
- Clearly, methane production from biomass is feasible (but tough --
- attempts to do it with chicken waste have, on occasion, exploded.)
-
- I went back to check the figures, which were notably lacking in
- notes. Sorry -- this isn't my field. For direct info, contact David
- Schimel at UCAR or Inez Fung at the Goddard Institute for Space Studies.
- I know *of* these people, but don't work with them directly. From
- what I recall of a lecture Fung gave, surface emission includes the
- following: biomass decomposition (leaf litter, vegetable matter --
- notably in aquatic environments, NOTABLY in rice paddies, by
- methanogenic bacteria); bovine flatulence; termite mounds; biomass
- burning; natural gas leakage; and others I can't recall.
-
- You're right, John -- you can't put plastic over the whole
- surface of the Earth. But think of all the quantity of "swamp gas"
- that is going directly into the atmosphere. Going to supplemental
- biomass generators using methanogenic bacteria is feasible, and has
- been done. When I think of how many tons of leaves are buried in
- landfills every year instead of being converted to a useful energy
- source (and not taking up landfill space at the same time), I believe
- we're missing a simple way of enhanced energy production. In
- addition to increased conservation (low-energy light bulbs, better
- windows, etc.), developed nations could easily maintain current
- energy needs without additional power-generating facilities of any
- type. That's where the push needs to be, and I'll burn methane to
- get there, given the proper means.
-
- Jim Acker
- jgacker@neptune.gsfc.nasa.gov
-
-
-