Carbon capture and sequestration (CCS) technologies are receivingconsiderable attention as a means of reducing CO2 emissions. For thecapture of CO2 from mixed gas streams, materials for increased gasexchange are necessary. Efficient gas exchange systems already exist in theform of vascularized lung-tissue. These tissues createthree-dimensional solid/liquid composites with high surface areas,continuous flow, and intimate contact between gasses and capture fluids.We will discuss a method for the synthesis of three-dimensionalmicrovascular gas exchange units capable of removing CO2 from flowing gasstreams. We will illustrate a newly observed spatiotemporal pattern of CO2reactivity in the microvascular gas exchange unit using colorimetric, pHsensitive dyes. Control over three-dimensional geometry is shown to increasecapture efficiencies.  We have developed and will disclose a computationalfinite element model that validates and explains the experimental observations.

3D microvascular gas exchange unit for carbon capture

243rd National Meeting (2012)

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