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This is a Quantitative Study study.

October 2, 2025

Underground Co₂ Mineralization Potential in Paraná State: Preliminary Assessment of Basaltic Rocks From Serra Geral Group

ESErico Albuquerque dos SantosBrazilian Institute of Environment and Renewable Natural Resources JZJoão Pedro Tauscheck ZielinskiPontifícia Universidade Católica do Rio Grande do Sul SCStéphanie R. CarvalhoBrazilian Institute of Environment and Renewable Natural Resources

Key Points

The estimated CO2 storage capacity in the Serra Geral Group ranges from 79 to 654 Gt, indicating significant potential in Paraná State.
With an estimated CO2 storage capacity of 2,840 Gt, volcanic rocks in the Paraná Basin hold promise for CO2 geological storage.
Utilizing various methodologies, the assessment highlights volcanic rocks' role in mineral carbonation, showing feasibility for CO2 storage.
Further research is necessary to refine quantification and identify potential reservoirs for CO2 injection in the region.

Abstract

The Paraná Basin's CO2 geological storage potential is significant due to its coal deposits, saline formations, CO2 emission sources, and pipeline network. Recent interest has shifted to volcanic rocks containing divalent cations, facilitating mineral carbonation. The basin's volcanic rocks have an estimated CO2 storage capacity of 2,840 Gt and areas of ca. 174,000 km2 in total were identified in different parts of Brazil. Paraná State, with its vast geological data, is ideal for a detailed assessment, especially in the Serra Geral Group (SGG), which covers over half of the state. Using different methodologies, the CO2 storage capacity in this area was estimated between 79 to 654 Gt, with further research required for precise quantification and the identification of possible reservoirs for CO2 injection.

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