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Carbon Sequestration
Breakthrough Concepts

 
 
Breakthrough Concepts
Project Descriptions
 
 
Molecular structure of the microporous metal organic framework MOF-5.

Breakthrough Concepts is the portion of the core R&D portfolio devoted to revolutionary and transformational approaches to carbon capture and storage.  These early, speculative technologies are characterized by high technical risk coupled with the potential for low-cost deployment, market permanence, and large global capacity.
NETL is committed to fostering ideas through collaborations with industry and academia.  The Breakthrough Concepts area serves as a starting point for novel CO2 capture, storage, and conversion concepts, with the potential to improve process efficiency, energy use, and costs.

For example, DOE announced in 2006 the selection of nine projects aimed at developing novel and cost-effective technologies for CO2 capture from coal-fired power plants.  Two of these projects have matured from the Breakthrough Concepts selections under a 2004 joint DOE/National Academies of Science solicitation to the pre-pilot scale.  The first focuses on ionic liquid absorbents for post-combustion capture.  The second uses novel microporous metal organic frameworks (MOFs) with high adsorption capacities for the removal of CO2 from flue gas.

Advanced CO2 separation, advanced subsurface technologies, and novel niches make up the three primary areas within Breakthrough Concepts.  In addition to the ionic liquid and MOFs projects described above, researchers are examining separation technologies using hydrogen-selective silica membranes and dual function membranes.  Subsurface technologies under investigation include mineral carbonation, mineral dissolution kinetics, and carbonate sediments below the sea floor.  Niche studies are focused on microbial CO2 conversion.

 
Did you Know?  A priority area of study is subsurface CO<sub>2</sub> conversion to enhance geologic sequestration.  There are two ways to do this:  react CO<sub>2</sub> with alkaline materials underground to form a stable solid, or use microbial organisms to convert CO<sub>2</sub> to methane.  Bio-accelerated subsurface sequestration requres formations suiteable for microbial life:  pressure less than about 10.000 psig, temperature less than 125 degrees C., pH between about three and 10, and a salt concentration less than 3,000 mg/L
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