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Chemistry, materials, & energy publications June 1, 2010

Steam-Stripping for Regeneration of Supported Amine-Based CO2 Adsorbents

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Li, W., Choi, S., Drese, J. H., Hornbostel, M., Krishnan, G., Eisenberger, P. M., & Jones, C. W. (2010). Steam‐stripping for regeneration of supported amine‐based CO2 adsorbents. ChemSusChem, 3(8), 899-903.

Abstract

Amine-based solid CO2 adsorbents have been investigated intensively in recent years. However, the focus has routinely been on their adsorption capacity and not on their regeneration. Here, a practical desorption process for supported amine adsorbents, steam-stripping, is demonstrated for the first time.

The world continues to rely heavily on energy supplied by fossil fuels, and the forecast for future energy supply and demand does not indicate that fossil fuel use will diminish substantially in the coming years. The use of these energy resources releases huge amounts of CO2 into the atmosphere every year and there is increased pressure throughout the world to limit these releases as a consequence of the impact of CO2 on global climate change. A primary method to limit the release of CO2 is to trap it at its release point (carbon capture) for storage via one of several potential storage technologies (sequestration).1 A key roadblock is the development of cost-effective CO2 capture/separation technologies, because these represent the majority of the costs in oceanic or geologic sequestration scenarios.2 In capturing CO2 for beneficial uses, such as feeding algae farms for biofuel production, the capture costs represent the entire cost of the CO2 supply.

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