Reversible Acid Gas Technology Captures Sulfur Dioxide from Power Plants
More sulfur dioxide and other acid gasses could be scrubbed from power plant emissions with a new technology developed by the Department of Energy’s Pacific Northwest National Laboratory. The new method, Reversible Acid Gas Capture, is a sustainable twofer: it doubles the amount of pollutants currently captured by the leading water-based scrubber, and it is far more energy-efficient. David Heldebrant, the scientist who headed the PNNL research team, points out that the technology easily lends itself to a retrofit for existing power plants. That’s good news for reducing pollution from coal-fired power plants, but it would be a mistake to call it a win for “clean coal.”
