Utilizing CO 2 as a strategy to scale up direct air capture may face fewer short-term barriers than directly storing CO 2
Bibliographic Data
| ID | 15547745 |
|---|---|
| Authors | Nicoletta Brazzola (0000-0002-5041-9972, ETH Zurich, corresponding author), Christian Moretti (0000-0001-5682-287X, ETH Zurich), Katrin Sievert (0000-0002-9090-0162, ETH Zurich), Anthony Patt (0000-0001-8428-8707, ETH Zurich), Johan Lilliestam (0000-0001-6913-5956, Friedrich-Alexander-Universität Erlangen-Nürnberg) |
| Year | 2024 |
| Volume | 19 |
| Issue | 5 |
| Pages | 054037-054037 |
| Publication date | 2024-04-05 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/ad3b1f |
| OpenAlex | W4393970800 |
| Language | EN |
| Citations received | 2 |
| References cited | 117 |
Direct air capture (DAC) is increasingly recognized as a necessary puzzle piece to achieve the Paris climate targets. However, the current high cost and energy intensity of DAC act as a barrier. Short-term strategies for initial deployment, technology improvement, and cost reduction are needed to enable large-scale deployment. We assess and compare two near-term pathways leading to the same installed DAC capacity and thus yielding the same cost reductions: its combination with CO 2 storage as direct air carbon capture and storage, or its deployment for CO 2 utilization as direct air carbon capture and utilization e.g. for synthetic fuels, chemicals, and materials; we characterize these as Direct and Spillover pathways. Drawing on the Multi-level Perspective on Technological Transition as a heuristic, we examine both technical and immaterial factors needed to scale up DAC under the two pathways, in order to assess the pathways’ relative advantages and to identify possible short-term bottlenecks. We find neither pathway to be clearly better: the Direct pathway offers technical advantages but faces regulatory barriers that need to be resolved before deployment, while the Spillover pathway offers market and governance advantages but faces challenges related to hydrogen production and increasing resource needs as it scales up. There may be reasons for policymakers to therefore pursue both approaches in a dynamic manner. This could involve prioritizing the Spillover pathway in the short term due to possibly fewer short-term regulatory barriers and its ability to produce net-zero emission products for existing and accessible markets. Once short-term governance obstacles have been addressed, however, the Direct pathway may allow for more efficient scaling of DAC capacity and cost reductions, especially if by then the needed infrastructure and institutions are in place
Business · Carbon capture and storage (timeline · Climate change · Economics · Environmental economics · Resource (disambiguation · Risk analysis (engineering · Scalability · Scale (ratio · Software deployment · Spillover effect · Carbon Dioxide Capture Technologies · Climate Change Policy and Economics · Computer Science · Energy, Environment, and Transportation Policies · Environmental Science
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| Unique citing works | 2 |
|---|---|
| Citations per year | 1 |
| Citation span | 2024 - 2025 (2) |
| Citation velocity | recent |
| Highly cited | No |
| Citation types | Neutral: 2 |