Friday, February 26, 2010
January 4, 2010
Power Plants Might Pipe Emissions Under Seabed
Scientists say buried volcanic rocks along the heavily populated coasts of New York, New Jersey and New England, as well as further south, might be ideal reservoirs to lock away carbon dioxide emitted by power plants and other industrial sources. A study this week in the Proceedings of the National Academy of Sciences outlines formations on land as well as offshore, where scientists from Columbia University's Lamont-Doherty Earth Observatory say the best potential sites may lie.
Underground burial, or sequestration, of globe-warming carbon dioxide is the subject of increasing study across the country. But up till now, research in New York has focused on inland sites where plants might send power-plant emissions into shale, a sedimentary rock that underlies much of the state. Similarly, a proposed coal-fired plant in Linden, N.J. would pump liquefied CO2 offshore into sedimentary sandstone. The idea is controversial because of fears that CO2 might leak. By contrast, the new study targets basalt, an igneous rock, which the scientists say has significant advantages.