CO2 Mineral Sequestration Integrated with Tailored Synthesis of Carbon-Neutral Filler Materials

0933627公园这项研究的重点是通过矿物碳酸化安全和永久储存二氧化碳。 矿物碳酸化是通过模拟CO2的天然无机化学转化来实现的，例如岩石风化形成碳酸钙或碳酸镁，以及CO2在海水/沃茨中溶解形成碳酸氢盐。 CO2与含镁矿物（即，蛇纹石）将进行全面的调查，重点是验证提出的表面反应机制和选择优化的螯合剂，以提高矿物碳酸化过程的整体转化率。 总体概念是通过定制的碳酸镁合成将气态CO2化学固定到矿物基质中。 通过设计合成碳酸镁（PMC）的形态结构以模仿市售填料材料，预期所提出的碳矿物封存技术将具有经济地大规模储存碳的可行性。 由于PMC是通过捕集CO2生产的，因此与通过加工石灰石制成的常规沉淀碳酸钙填料相比，通过碳矿化生产的基于PMC的填料材料可以被认为是碳中性的。 PI参与为K-12，本科生和研究生制定全国范围的推广计划。该奖项由CBET/ENG环境可持续发展计划和化学和生物分离计划共同资助。

0933627ParkThis research focuses on safe and permanent storage of CO2 via mineral carbonation. Mineral carbonation is to be achieved through mimicry of natural inorganic chemical transformation of CO2, such as weathering of rocks to form calcium or magnesium carbonates and dissolution of CO2 in seawater/saline waters to form bicarbonates. The fundamental reaction mechanisms and kinetics of CO2 with Mg-bearing minerals (i.e., serpentine) will be comprehensively investigated, with an emphasis on validation of a proposed surface reaction mechanism and the selection of optimized chelating agents to enhance the overall conversion of the mineral carbonation process. The overarching concept is to chemically fix gaseous CO2 into a mineral matrix via tailored synthesis of magnesium carbonate. By engineering the morphological structure of synthesized magnesium carbonate (PMC) to mimic commercially available filler materials, it is anticipated that the proposed carbon mineral sequestration technology will have the feasibility to store carbon at large scale economically. Since PMC is to be produced by capturing CO2, the PMC-based filler materials produced via the carbon mineralization can be considered carbon-neutral compared to the conventional precipitated calcium carbonate filler material, which is made by processing limestone. The PI participates in developing national-scale outreach programs for K-12, undergraduate, and graduate students. This award is co-funded by the CBET/ENG Environmental Sustainability program and Chemical and Biological Separations program.