I-Corps: Adaptive CO2 Capture and Storage Technology Using Alkaline Industrial and Mining Residues

这个I-Corps项目的更广泛影响/商业潜力将导致确定客户群，并描绘引入新技术的价值主张，以捕获二氧化碳并将其转化为含无机碳酸盐的增值产品。使用碱性工业残留物作为该工艺的原料将导致这些材料的回收和再利用，并减少需要填埋的废物。包括二氧化碳排放者和碱性工业残渣产生者在内的多个客户群体和工业部门预计将从该技术的实施中受益。通过NSF I-Corps计划，该团队将确定对该技术的迫切需求以及他们的技术将为美国制造业带来的经济优势。这个I-Corps项目将对现有的化学和制造工艺进行深入研究，以实现二氧化碳的捕获、转化和废物利用。将确定和讨论现有工艺中的技术挑战、相关经济学以及实施CO2捕获和利用新工艺的知识差距。该项目所依据的技术涉及使碱性工业和采矿残余物与人为二氧化碳发生反应，以生产具有附加值的碳酸盐材料。这些测量在25-75°C下进行，并涉及用于CO2捕获的化学溶剂。 初步研究结果表明，通过溶剂的内部化学循环，实现了CO2向碳酸钙和碳酸镁的高转化率。在替代的迭代中，该方法可用于化学再生溶剂，同时产生有用的产物，而不是溶剂的热再生。这些碳酸盐的形态可以根据具体应用进行调整，包括建筑或填充材料。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The broader impacts/commercial potential of this I-Corps project will lead to identification of customer segments and delineation of the value proposition for introducing novel technologies to capture and convert carbon dioxide (CO2) to value-added products bearing inorganic carbonates. The use of alkaline industrial residues as a feedstock to the process will lead to the recycling and reuse of these materials and reduce the waste that needs to be landfilled. Multiple customer segments and industrial sectors including CO2 emitters and generators of alkaline industrial residues are expected to benefit from the implementation of this technology. Through the NSF I-Corps Program, the team will identify the immediate need for this technology and the economic advantages that their technology will bring to U.S. manufacturing. This I-Corps project will result in significant insights into existing chemical and manufacturing processes for CO2 capture, conversion, and waste utilization. The technical challenges in existing processes, associated economics, and knowledge gaps in implementing novel processes for CO2 capture and utilization will be identified and discussed. The technology on which this project is based involves reacting alkaline industrial and mining residues and anthropogenic CO2 to produce value-added carbonate materials. These measurements occur at 25-75°C and involve the chemical solvents for CO2 capture. Preliminary research results show that high conversion of CO2 to calcium- and magnesium carbonates is achieved with internal chemical recycling of the solvent. In an alternative iteration, this approach can be used to chemically regenerate the solvent while producing useful products as opposed to thermal regeneration of the solvent. The morphologies of these carbonates can be tuned for specific applications including construction or filler materials.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.