Here is a potential Challeng
er
The chemists among you can tell me if you think its feasible (and will last) or is he is 'talking through his hat'.
Quote:
Apparently there are numerous chemicals that bind with carbon dioxide and therefore can be captured and sequestered.
Lackner is proposing the use of calcium hydroxide— also called portlandite because of its frequent use in portland cement.
This “slaked lime” apparently is available in ample quantities from limestone. However, Lackner is not committed to this particular chemical and says that probably other substances would work equally well or even better.
The point of his paper is to show mathematically that the carbon dioxide capture from natural airflow is technically feasible at a rate far above the rate at which trees capture it.
Removing CO2 from one cubic meter of air and disposing of it will offset the effects of generating 10,000 joules of heat from gasoline anywhere in the world. Is this economically viable? Lackner says yes.
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Metta Spencer's weblog: Two New Anti-Global Warming Inventions
