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

I-Corps项目的广泛影响/商业潜力将导致确定客户群，并描述引入新技术以捕获二氧化碳(CO2)并将其转化为含有无机碳酸盐的增值产品的价值主张。使用碱性工业废渣作为该过程的原料，将导致这些材料的回收和再利用，并减少需要填埋的废物。多个客户群和工业部门，包括二氧化碳排放器和碱性工业残渣发生器，预计将从这项技术的实施中受益。通过NSF i-Corps计划，该团队将确定对这项技术的迫切需求，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项目将对现有的二氧化碳捕获、转化和废物利用的化学和制造工艺产生重大影响。将确定和讨论现有工艺中的技术挑战、相关的经济以及在实施二氧化碳捕获和利用新工艺方面的知识差距。该项目所基于的技术涉及将碱性工矿渣和人为二氧化碳反应，以生产增值碳酸盐材料。这些测量在25-75°C进行，涉及用于捕获二氧化碳的化学溶剂。初步研究结果表明，通过溶剂的内部化学循环，可以实现二氧化碳转化为碳酸钙和碳酸镁的高转化率。在另一种迭代中，这种方法可以用来化学再生溶剂，同时产生有用的产品，而不是溶剂的热再生。这些碳酸盐的形态可以针对特定的应用进行调整，包括建筑或填充材料。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势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.