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Synthetic 'tree' promises to catch carbon
The thought of an artificial tree usually excites memories of building and ornamenting a Christmas centerpiece. But here's an innovation that will put those plastic branches to shame: scientists at Columbia University are developing a structure that can capture carbon 1,000 times faster than a real tree.
Klaus Lackner, a professor of geophysics at the university, has been working on the project since 1998, according to a CNN report, and is optimistic about a near-future application.
Modern improvements in coal-fired power plants have reduced carbon emissions, but Lackner is seeking a different function. The "tree" would be used to trap carbon that has already been emitted into the air by car gasoline or airplane fuel, CNN reports.
Unlike the real thing, the synthetic "tree" doesn't need direct sunlight, water, a trunk, or branches to function, as it looks more like a cylinder than a soaring Redwood. The concept, which Lackner says is flexible in size and can be placed nearly anywhere, works by collecting carbon dioxide on a sorbent, cleaning and pressurizing the gas, and releasing it. Similar to the way a sponge collects water, the sorbent would collect carbon dioxide.… Read more
