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© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

The concentration of greenhouse gases in the atmosphere has led to irreversible climate changes, emphasizing the need for effective strategies to mitigate emissions. Carbon capture, utilization, and storage (CCUS) technologies, including geological CO2 storage, have gained recognition worldwide due to their potential for CO2 emissions abatement. Among potential geological reservoirs, coal seams are significant due to their efficiency in securing CO2 storage, through their adsorption storage capacity. This study presents an innovative methodology for estimating the theoretical CO2 storage capacity in unmineable coal seams, focusing on the Chico Lomã deposit in southern Brazil. The methodology integrates a comprehensive drillhole database and adsorption isotherm data to define the coal reservoir zone and calculate its CO2 storage capacity. The results indicate a total theoretical CO2 storage capacity of 47.8 Gt in the Chico Lomã deposit, with the potential to mitigate emissions from local thermoelectric plants for over 500 years. The study encourages the application of the proposed methodology to assess CO2 storage capacity in other unmineable coal deposits worldwide.

Details

Title
Defining CO2 Geological Storage Capacity in Unmineable Coal Seams Through Adsorption Data in 3D: Case Study of the Chico Lomã Deposit, Southern Brazil
Author
de Oliveira, Saulo B 1   VIAFID ORCID Logo  ; Rocha, Haline V 2   VIAFID ORCID Logo  ; Rodrigues, Cristina F A 3   VIAFID ORCID Logo  ; Manuel J Lemos de Sousa 3   VIAFID ORCID Logo  ; Tassinari, Colombo C G 2 

 Instituto de Geociências, Universidade de São Paulo, São Paulo 05508-080, SP, Brazil 
 Instituto de Energia e Ambiente, Universidade de São Paulo, São Paulo 05508-900, SP, Brazil; [email protected] (H.V.R.); [email protected] (C.C.G.T.) 
 Faculdade de Ciência e Tecnologia, Fundação/Universidade Fernando Pessoa, Praça de 9 de Abril, 349, 4249-004 Porto, Portugal; [email protected] (C.F.A.R.); [email protected] (M.J.L.d.S.); MARE–Centro de Ciência do Mar e Ambient, URI Coimbra, 3004-517 Coimbra, Portugal; Academia das Ciências de Lisboa, 19, 1200-168 Lisboa, Portugal 
First page
2856
Publication year
2025
Publication date
2025
Publisher
MDPI AG
e-ISSN
20711050
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3188886846
Copyright
© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.