Geological aspects of CO2 storage and utilization: CEEGS technology and its potential application in the conditions of the Serbian part of the Pannonian basin

Abstract

Considering the fact that CO2 is the main contributor to the greenhouse effect, and its concentration in the air is rapidly rising (FRIEDLINGSTEIN et al. 2023), it is necessary to seek for new solutions so that this trend can be slowed down, or eventually stopped. Carbon Capture, Utilization and Storage (CCUS) methods have been applied for the first time in 1972, for the purpose of enhanced oil recovery (CARNEIRO & BEHNOUS, 2023). Since then, various technological solutions have been proposed and applied. The CEEGS (CO2-based Electrothermal Energy and Geological Storage) project brings novelty because it represents an integration of CO2 geological storage and sequestration with electrical energy storage and production in an cyclical electrothermal process (CARNEIRO & BEHNOUS 2023, CARRO & CHARCATEGUI 2023, CARRO et al. 2024). The synthesis of these two systems enables not only the removal of CO2 from the atmosphere, but also its use as a working fluid.