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Carbon-eating "green" cement wins funds for UK firm
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| Contributor | RP |
| Last Edited | RP Aug 12, 2009 01:40pm |
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| Category | General |
| Author | Ben Hirschler |
| News Date | Thursday, August 6, 2009 07:00:00 PM UTC0:0 |
| Description | With an annual production of more than 2.5 billion tons, conventional Portland cement is responsible for an estimated 5 percent of global CO2 emissions, more than the airline industry.
Novacem believes its "carbon-negative" cement answers the problem because it absorbs more carbon dioxide over its life cycle than it emits.
The trick is to make cement from magnesium silicates rather than calcium carbonate, or limestone, since this material does not emit CO2 in manufacture and absorbs the greenhouse gas as it ages. |
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