06.10.2021

# New Publications

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D'Aniello, Andrea; et al. (2021): Modeling Gaseous CO2 Flow Behavior in Layered Basalts: Dimensional Analysis and Aquifer Response

D'Aniello, Andrea; Tómasdóttir, Sigrún; Sigfússon, Bergur; Fabbricino, Massimiliano (2021): Modeling Gaseous CO2 Flow Behavior in Layered Basalts: Dimensional Analysis and Aquifer Response. In Ground water 59 (5), pp. 677–693. DOI: 10.1111/gwat.13090.

"Particular attention is paid to the risk of carbon dioxide (CO2) leakage in geologic carbon sequestration (GCS) operations, as it might lead to the failure of sequestration efforts and to the contamination of underground sources of drinking water. As carbon dioxide would eventually reach shallower formations under its gaseous state, understanding its multiphase flow behavior is essential. To this aim, a hypothetical gaseous leak of carbon dioxide resulting from a well integrity failure of the GCS system in operation at Hellisheiði (CarbFix2) is here modeled."

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06.10.2021

# New Publications

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Marieni, Chiara; et al. (2021): Mineralization potential of water-dissolved CO2 and H2S injected into basalts as function of temperature: Freshwater versus Seawater

Marieni, Chiara; Voigt, Martin; Clark, Deirdre E.; Gíslason, Sigurður R.; Oelkers, Eric H. (2021): Mineralization potential of water-dissolved CO2 and H2S injected into basalts as function of temperature: Freshwater versus Seawater. In International Journal of Greenhouse Gas Control 109, p. 103357. DOI: 10.1016/j.ijggc.2021.103357.

"Mineralization of freshwater-dissolved gases, such as CO2 and H2S, in subsurface mafic rocks is a successful permanent gas storage strategy. To apply this approach globally, the composition of locally available water must be considered. In this study, reaction path models were run to estimate the rate and extent of gas mineralization reactions during gas-charged freshwater and seawater injection into basalts at temperatures of 260, 170, 100, and 25°C."

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06.10.2021

# New Publications

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Mahzari, Pedram; et al. (2021): Characterizing fluid flow paths in the Hellisheidi geothermal field using detailed fault mapping and stress-dependent permeability

Mahzari, Pedram; Stanton-Yonge, Ashley; Sanchez-Roa, Catalina; Saldi, Giuseppe; Mitchell, Thomas; Oelkers, Eric H. et al. (2021): Characterizing fluid flow paths in the Hellisheidi geothermal field using detailed fault mapping and stress-dependent permeability. In Geothermics 94 (8), p. 102127. DOI: 10.1016/j.geothermics.2021.102127.

"The Husmuli zone of the SW-Iceland Hellisheidi geothermal field is currently being used for re-injection of geothermal fluids and geothermal CO2 for its permanent storage in the form of carbonate minerals. A fully coupled hydro-thermo-mechanical numerical model was employed to investigate the coupled impacts of these complex processes on the calibration of fluid flow paths, which can have significant implications for the long-term performance of this subsurface reservoir."

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04.10.2021

# Media

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Video: Why planting trees alone won't save the climate (Planet B, BR) (German)

German video on organistions calling for afforestation to save the climate.

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04.10.2021

# Media

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Video: Agriculture: How our soil can save the climate (Planet B, BR) (German)

German video on soil carbon sequestration.

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04.10.2021

# Media

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The Guardian: Coalition approves plan to award carbon credits to CCS fossil fuel projects

"The Morrison government has increased support for controversial fossil fuel projects that promise to capture and store carbon dioxide emissions by approving a plan to award them carbon credits. It followed the oil and gas company Santos saying a proposed carbon capture and storage (CCS) project at its Moomba gas well in South Australia hinged on whether it had access to carbon credit revenue."

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04.10.2021

# Media

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Clean Technica: Carbon Capture’s Other Dirty Secret: Nowhere To Put It

"Failure to address CCS problems of magnitude, physics of underground storage, and resultant costs is a policy failure of staggering proportions."

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04.10.2021

# Media

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Video: Highlights from Watershed’s Climate Week Forum

"Watershed hosted an event during Climate Week 2021 to go deep on how companies can take meaningful climate action. Here's a quick look at some of our favorite moments."

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04.10.2021

# New Publications

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Bennett, Jeffrey A.; et al. (2021): Life cycle meta-analysis of carbon capture pathways in power plants: Implications for bioenergy with carbon capture and storage

Bennett, Jeffrey A.; Abotalib, Mohammad; Zhao, Fu; Clarens, Andres F. (2021): Life cycle meta-analysis of carbon capture pathways in power plants: Implications for bioenergy with carbon capture and storage. In International Journal of Greenhouse Gas Control 111, p. 103468. DOI: 10.1016/j.ijggc.2021.103468.

"Bioenergy with carbon capture and storage (BECCS) based electricity generation is one possible approach for delivering large-scale carbon dioxide removal from the atmosphere. This study evaluates the environmental impacts of leveraging existing power plants for BECCS. We performed a life cycle meta-analysis of eight carbon capture technologies, including five previously simulated only for coal and natural gas, for both steam cycle and integrated gasification combined cycle (IGCC) power plants. We found that IGCC plants offer the best balance of negative emissions, energy return on investment (EROI) and low water use irrespective of capture technologies. Planned IGCC plants tend to be large whereas biomass-fired power plants are often small and distributed in the landscape because of the distributed nature of the fuel. Steam cycle plants had larger negative emissions, but also lower EROI, and so blending with coal may be necessary to achieve a suitable EROI. Steam cycles were sensitive to capture technology type, and results found membrane and calcium looping capture technologies offer a balance between negative emissions, EROI and water use when fired using coal-biomass blends. These results suggest that steam cycle power plants may be the most desirable candidates to support early-stage deployment of BECCS."

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04.10.2021

# Media

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Cision PR Newswire: Carbon Direct Leads Series A Investment in Clean Energy Systems

"CES technology will be deployed in the landmark carbon removal project in Mendota, California."

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