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Gold/Mining/Energy : Gold and Silver Juniors, Mid-tiers and Producers
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To: hank2010 who wrote (37829)4/9/2007 10:56:34 AM
From: E. Charters   of 78419
 
The number of lbs. of waste from a burnt material equals the number of lbs. of the original material. Dalton discovered that.

The Law of conservation of matter of non nuclear reactions -- one could say.

However I think you mean the amount of waste that tends to disseminate or in other words the amount of gas, say CO2 and water produced. NOx and unburnt hydrides are pollutants and cannot be totally ignored of course..

In the case of ethanol and gasoline CO2 and water production approaches 97%. The water vapour does not fall far from the stack/exhaust.

C2H5OH Produces 2 CO2, and 3H2O, so the ratio is 88 to 22 or 4 times as much carbon dioxide as water production by weight.

Wood is C6H10O5 so produces 6 CO2, 5 H2O, for a ratio of 2.93 to one gas to water. Ash in wood is high. (The Ash tree itself may be 30%+ solids when burnt, hence the name.) Wood is 25 per cent water chemically, not including the water soaked into the cells. So wood is technically 40% water upon combusion.

Coal is mostly carbon and about 15% methane depending on its composition. Inert materials may comprise 10%. So coal is 87.75% CO2 gas on combustion and the rest is water and ash.

Hydrogen is the cleanest burning fuel and one of the safest in terms of freedom from explosion, altough very difficult to contain. All it produces on combusion is water. Something to think about. A hydrogen economy would produce little greenhouse gas if the energy to produce hydrogen were generated by flowing water, wind, sun, geothermal and tides/waves.

EC<:-}
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