This paper will present the results of an enzymatic approach that enables cost-effective CO_2 capture using low energy, carbonate solvents. Despite being energetically favorable, low rates of CO_2 absorption have limited their use to commercial applications that operate at high pressures and require chemical promoters. Akermin's technology accelerates the hydration of CO_2 to bicarbonate, enabling the cost-effective application of carbonate chemistry. The paper will summarize the advantages of the technology and present results from laboratory testing that demonstrate significant rate acceleration in the presence of the immobilized enzyme, high thermo stability, long-term performance and tolerance to impurities in flue gas from coal-fired power plants. Data from Aspen Plus® simulation models is used to project the avoided cost of CO_2 capture. Finally, the paper will describe the pilot projects and feasibility studies in progress and development that support commercialization of the technology for target market segments in CO_2 separation and capture.
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