Fig. 7: Normalized Storage Efficiency caused by Impurities (NSEI) for different projects. | Communications Engineering

Fig. 7: Normalized Storage Efficiency caused by Impurities (NSEI) for different projects.

From: Economically viable geological CO2 storage from direct air capture has critical threshold of 70% CO2 concentration

Fig. 7

The Cranfield and CarbFix projects exhibit higher NSEI values under all examined pressure–temperature conditions, reflecting their favorable P–T environments. While the Sleipner site has the lowest NSEI and is therefore not recommended for impure CO2 injection and storage.

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