Assessment of Geochemical Limitations to Utilizing CO₂ as a Cushion Gas in Compressed Energy Storage Systems.

ABSTRACT: Compressed energy storage (CES) of air, CO₂, or H₂ in porous formations is a promising means of energy storage to abate the intermittency of renewable energy production. During operation, gas is injected during times of excess energy production and extracted during excess demands to drive turbines. Storage in saline aquifers using CO₂ as a cushion or working gas has numerous advantages over typical air storage in caverns. However, interactions between CO₂ and saline aquifers may result in potential operational limitations and have not been considered. This work utilizes reactive transport simulations to evaluate the geochemical reactions that occur during injection and extraction operational cycles for CES in a porous formation using CO₂

SUBMITTER: Iloejesi CO 

PROVIDER: S-EPMC7994420 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature