[Gasification] Pure H from Water Gas after eggshells used to stripCO2

[Ken Calvert]

Drew, Hi!  I am surprised that CBC has let this one through, or am I  not a chemist?  If you heat calcium carbonate or eggshells, you drive off Carbon dioxide to get the Calcium Oxide.  That means that you are no further ahead???  If indeed you can get $1,000 a gram for the collagen film inside the eggshells then  I think the whole CO2 bit  is very much a side issue???  Ken C. 

  
----- Original Message ----- 
From: "drewrt" <drew at artforging.com>
To: <gasification at listserv.repp.org>
Sent: Saturday, September 29, 2007 3:48 AM
Subject: [Gasification] Pure H from Water Gas after eggshells used to stripCO2


An interesting news article

> Chemical and biomolecular engineer L.S. Fan and former doctoral 
> student Mahesh Iyer, came up with the idea when they were trying to 
> improve a method of hydrogen production called the water-gas-shift 
> reaction. With this method, fossil fuels such as coal are gasified to 
> produce carbon monoxide gas, which then combines with water to produce 
> carbon dioxide and hydrogen.


> The process works because eggshells are mostly made up of calcium 
> carbonate — a very absorbent material. Calcium carbonate is a common 
> ingredient in calcium supplements and antacids. When calcium carbonate 
> is heated, it becomes calcium oxide, which will then absorb acidic gas 
> such as carbon dioxide.
>
> Calcium carbonate captures 78 per cent of carbon dioxide by weight, 
> said Fan. That means given equal amounts of carbon dioxide and 
> eggshell, the eggshell absorbs 78 per cent of the carbon dioxide.
>
>
> http://www.cbc.ca/technology/story/2007/09/27/eggshells.html



Drew

_______________________________________________
Gasification mailing list
Gasification at listserv.repp.org
http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org
http://gasifiers.bioenergylists.org
http://info.bioenergylists.org