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Name: Lynn Slezak
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Question:
Is it possible to recycle ash and gases from burnt wood, coal, and all other flammable solids or liquids by adding a readily available gas such as oxygen under very high pressure with a match and several ounces of gasoline?
How much would it cost to add a pipe on already existing power plants or build new ones? How much fuel would be required?
Would it pollute the atmosphere? Would it be economical to keep in operation?



Replies:
An article entitled "Waste to Energy: Ashes to Ashes?" was published in the November 1991 issue of "Waste Age" magazine, on page 46.

Mortis


Question was: "Is it possible to recycle ash and gases from burnt wood, coal, ...."

Ashes from organic materials (wood, coal, etc) are used as fillers materials in several concrete mixtures that are used in high performance applications. Using these materials as fillers has shown to increase the structural integrity of the concrete by increasing fracture resistance and decreasing fatigue time to failure rates.

Your library should have some information on this in books about concrete - types, uses, etc.

Woodlab


The previous response noted that organic ash is often used as filler in building materials. This is true. However, there is a down side to this as well -- coal deposits often contain traces of uranium byproducts as well, and are often concentrated in the ash (does not burn with the rest of the coal, and is therefore in much higher amounts compared to the mass of the ash it ends up sharing its time with.) So when these are added to concrete, it makes the buildings themselves radioactive (ever so slightly). The background radiation is a good deal higher than if the ash had not been added. (keep in mind -- this is only from coal ash -- wood ash does not contain even a fraction of the uranium by products as coal does).

Wordsworth



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