Shallow Geologic Storage of Carbon to Remove Atmospheric CO2 and Reduce Flood Risk,Environmental Science & Technology

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Shallow Geologic Storage of Carbon to Remove Atmospheric CO2 and Reduce Flood Risk
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2023-06-01 , DOI: 10.1021/acs.est.3c00600
Lawrence C Murdoch _{1,

2} , Leonid N Germanovich ₁ , William W Slack ₂ , Michael Carbajales-Dale ₁ , Douglas Knight ₂ , Robert Moak ₁ , Clemence Laffaille ₁ , Scott DeWolf ₁ , Soheil Roudini ₁

Affiliation

Geologic carbon storage currently implies that CO₂ is injected into reservoirs more than 1 km deep, but this concept of geologic storage can be expanded to include the injection of solid, carbon-bearing particles into geologic formations that are one to two orders of magnitude shallower than conventional storage reservoirs. Wood is half carbon, available in large quantities at a modest cost, and can be milled into particles and injected as a slurry. We demonstrate the feasibility of shallow geologic storage of carbon by a field experiment, and the injection process also raises the ground surface. The resulting CO₂ storage and ground uplift rates upscale to a technique that could contribute to the mitigation of climate change by storing carbon as well as helping to adapt to flooding risks by elevating the ground surface above flood levels. A life-cycle assessment indicates that CO₂ emissions caused by shallow geologic storage of carbon are a small fraction of the injected carbon.

中文翻译：

浅层地质碳储存可去除大气中的二氧化碳并降低洪水风险

地质碳储存目前意味着CO ₂被注入超过1公里深的储层，但这种地质储存的概念可以扩展到包括将固体含碳颗粒注入到浅一到两个数量级的地质构造中。与传统水库相比。木材是半碳的，可以以适中的成本大量获得，并且可以研磨成颗粒并作为浆料注入。我们通过现场实验证明了浅层地质储存碳的可行性，并且注入过程还抬高了地表。产生的CO ₂储存和地面抬升率升级为一种技术，可以通过储存碳来缓解气候变化，并通过将地表抬高到洪水位以上来帮助适应洪水风险。生命周期评估表明，浅层碳地质储存引起的CO _{2排放仅占注入碳的一小部分。}

更新日期：2023-06-01

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