carbon sequestration

http://www.physorg.com/news134926088.html

This computer-generated image released by Bellona/Projektlab (BPL) shows seaweed "photobioreactors," which, if built, could help reduce carbon dioxide while producing more energy. Microscopique seaweed consume a lot of carbon dioxide and are rich in lipids, which can be used to produce biofuel.

So-called microalgae hold enormous potential when it comes to reining in both climate change, since they naturally absorb large amounts of carbon dioxide, as well as energy production, since they can easily be converted to a range of different fuel types.

"This is certainly one of the most promising and revolutionary leads in the fight against climate change and the quest to satisfy energy needs," Frederic Hauge, who heads up the Norwegian environmental group Bellona, told AFP.

http://www.physorg.com/news135820173.html

Scientists say they have found a workable way of reducing CO2 levels in the atmosphere by adding lime to seawater. And they think it has the potential to dramatically reverse CO2 accumulation in the atmosphere, reports Cath O'Driscoll in SCI's Chemistry

http://www.physorg.com/news96732819.html

Global Research Technologies, LLC (GRT), a technology research and development company, and Klaus Lackner from Columbia University have achieved the successful demonstration of a bold new technology to capture carbon from the air. The "air extraction" prototype has successfully demonstrated that indeed carbon dioxide (CO2) can be captured from the atmosphere. This is GRT’s first step toward a commercially viable air capture device.

http://www.cbc.ca/technology/story/2008/02/15/tech-carbon-capture.html

Scientists have created metal-organic crystals capable of soaking up carbon dioxide gas like a sponge, which could be used to keep industrial emissions of the gas out of the atmosphere.

Chemists at the University of California Los Angeles said the crystals — which go by the name zeolitic imidazolate frameworks, or ZIFs — can be tailored to absorb and trap specific molecules.

An optical photograph of crystals of zeolitic imidazolate frameworks (ZIFs). The porous materials can be designed to soak up specific molecules, such as carbon dioxide, making them potentially useful to trap the greenhouse gas. (Omar Y. Yaghi/Science)
"The technical challenge of selectively removing carbon dioxide has been overcome," said UCLA chemistry professor Omar Yaghi in a statement.