Cited by 373CO2 Sequestration and Geologic InteractionsCarbon Dioxide Capture TechnologiesClimate Change and Geoengineering

The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.

Potential and costs of carbon dioxide removal by enhanced weathering of rocks

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Abstract

The chemical weathering of rocks currently absorbs about 1.1 Gt CO 2 a −1 being mainly stored as bicarbonate in the ocean. An enhancement of this slow natural process could remove substantial amounts of CO 2 from the atmosphere, aiming to offset some unavoidable anthropogenic emissions in order to comply with the Paris Agreement, while at the same time it may decrease ocean acidification. We provide the first comprehensive assessment of economic costs, energy requirements, technical parameterization, and global and regional carbon removal potential. The crucial parameters defining this potential are the grain size and weathering rates. The main uncertainties about the potential relate to weathering rates and rock mass that can be integrated into the soil. The discussed results do not specifically address the enhancement of weathering through microbial processes, feedback of geogenic nutrient release, and bioturbation. We do not only assess dunite rock, predominantly bearing olivine (in the form of forsterite) as the mineral that has been previously proposed to be best suited for carbon removal, but focus also on basaltic rock to minimize potential negative side effects. Our results show that enhanced weathering is an option for carbon dioxide removal that could be competitive already at 60 US $ t −1 CO 2 removed for dunite, but only at 200 US $ t −1 CO 2 removed for basalt. The potential carbon removal on cropland areas could be as large as 95 Gt CO 2 a −1 for dunite and 4.9 Gt CO 2 a −1 for basalt. The best suited locations are warm and humid areas, particularly in India, Brazil, South-East Asia and China, where almost 75% of the global potential can be realized. This work presents a techno-economic assessment framework, which also allows for the incorporation of further processes.

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Research works printed but not linked: 4

  1. Ciais P ed Stocker T F, 2013, Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change
  2. Garrels R M, 1976, Am. Sci., 64, 306
  3. Brown T J, 2010, Underground Mining of Aggregates
  4. ©OECD/IEA, 2015, Coal Information

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Metadata

Authors
Strefler, J., Amann, T., Bauer, N., Kriegler, E., & Hartmann, J.
Affiliations
  • Potsdam Institute for Climate Impact Research (DE)
  • Universität Hamburg (DE)
Corresponding author
  • Strefler, Jessica
  • Amann, Thorben
Venue
Environmental Research Letters
Published
2018-03-01
Volume
13
Issue
3
Pages
034010
ISSN
1748-9326 (ISSN-L)
OpenAlex
W2786586833
Cited by
372
References
43
Citations by year
2026: 54 · 2025: 60 · 2024: 73 · 2023: 52 · 2022: 49 · 2021: 50 · 2020: 14 · 2019: 12 · 2018: 8
FWCI
10.56
Type
journal article
Language
en
Open access
Locations
  • Environmental Research Letters (publishedVersion, cc-by)
  • MPG.PuRe (Max Planck Society) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Max Planck Digital Library (submittedVersion, other-oa)
  • RENATE (submittedVersion, cc-by-nc-nd)
  • Publication Database PIK (Potsdam Institute for Climate Impact Research (PIK)) (submittedVersion, other-oa)
  • RENATE (cc-by)
Funders
Deutsche Forschungsgemeinschaft (EXC177, SPP 1689 (CEMICS))
Topics
  • Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
  • Physical Sciences › Chemical Engineering › Filtration and Separation › Carbon Dioxide Capture Technologies
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate Change and Geoengineering
Keywords
enhanced weathering, carbon dioxide removal, chemical weathering, dunite, basalt, olivine, forsterite, weathering rates, grain size, techno-economic analysis, energy requirements, cropland, ocean acidification, Paris Agreement

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