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Scrubbing sulfur
Date:8/18/2009

ease the captured gases.

Heldebrant and colleagues demonstrated the process in previous work with a carbon dioxide-binding organic liquid, called CO2BOL. In this process, scientists mix the CO2BOL solution into a holding tank with emissions that contain carbon dioxide. The CO2BOL chemically binds with the carbon dioxide to form a liquid salt solution.

In another tank, scientists reheat the salt solution to strip out the carbon dioxide. Non-hazardous gases such as nitrogen would not be captured and are released back into the atmosphere. The toxic compounds are captured separately for storage. At that point, the CO2BOL solution is back in its original state and ready for reuse.

Heldebrant and colleagues have developed organic liquid systems that bind three additional acid gases found in emissions. He will talk about new work with sulfur dioxide, carbonyl sulfide, and carbon disulfide -- all acid gases that are environmentally harmful -- at the American Chemical Society Fall 2009 Meeting and Exposition, Tuesday, August 18, at 4:30 p.m. EDT.


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Contact: Annie Haas
anne.haas@pnl.gov
509-375-3732
DOE/Pacific Northwest National Laboratory
Source:Eurekalert  

Page: 1 2

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