Authors : Raymond Aderoju; Olanrewaju Ayodele; Moses Falowo; Olaniyi Anisere

Volume/Issue : Volume 11 - 2026, Issue 8 - August

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Google Scholar : https://tinyurl.com/2s52t49t

DOI : https://doi.org/10.38124/ijisrt/26aug1167

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

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Abstract : Subsurface energy storage, encompassing geological CO₂ sequestration, underground hydrogen storage (UHS), aquifer thermal energy storage (ATES), and compressed-air energy storage (CAES), is expanding rapidly as decarbonization infrastructure, and much of it is sited in or beneath saline formations that directly overlie or adjoin freshwater aquifers. This review synthesizes evidence on an under-recognized consequence of this expansion: storageinduced disturbance of the freshwater–saline interface and consequent salinization risk to overlying underground sources of drinking water (USDW).

Keywords : Storage-Induced Salinization; Underground Energy Storage; Hydrogeophysics; GALDIT Vulnerability Index; Machine Learning; Groundwater Protection.

References :

1. Intergovernmental Panel on Climate Change. Climate Change 2022: Mitigation of Climate Change. Working Group III contribution to the Sixth Assessment Report. Cambridge: Cambridge University Press; 2022.
2. International Energy Agency. Net Zero by 2050: A Roadmap for the Global Energy Sector. Paris: IEA; 2021.
3. Werner AD, Bakker M, Post VEA, Vandenbohede A, Lu C, Ataie-Ashtiani B, Simmons CT, Barry DA. Seawater intrusion processes, investigation and management: recent advances and future challenges. Adv Water Resour. 2013;51:3–26. doi:10.1016/j.advwatres.2012.03.004.
4. Lemieux JM. The potential impact of underground geological storage of carbon dioxide in deep saline aquifers on shallow groundwater resources. Hydrogeol J. 2011;19(4):757–778. doi:10.1007/s10040-011-0715-4.
5. Celia MA, Bachu S, Nordbotten JM, Bandilla KW. Status of CO2 storage in deep saline aquifers with emphasis on modeling approaches and practical simulations. Water Resour Res. 2015;51(9):6846–6892. doi:10.1002/2015WR017609.
6. Birkholzer JT, Zhou Q, Tsang CF. Large-scale impact of CO2 storage in deep saline aquifers: a sensitivity study on the pressure response in stratified systems. Int J Greenh Gas Control. 2009;3(2):181–194.
7. Cihan A, Birkholzer JT, Zhou Q. Pressure buildup and brine migration during CO2 storage in multilayered aquifers. Groundwater. 2013;51(2). doi:10.1111/j.1745-6584.2012.00972.x.
8. Qafoku NP, Lawter AR, Bacon DH, Zheng L, Kyle J, Brown CF. Review of the impacts of leaking CO2 gas and brine on groundwater quality. Earth-Sci Rev. 2017;169:69–84. doi:10.1016/j.earscirev.2017.04.010.
9. Kharaka YK, Cole DR, Hovorka SD, Gunter WD, Knauss KG, Freifeld BM. Gas-water-rock interactions in Frio Formation following CO2 injection: implications for the storage of greenhouse gases in sedimentary basins. Geology. 2006;34(7):577–580. doi:10.1130/G22357.1.
10. Kharaka YK, Thordsen JJ, Hovorka SD, Nance HS, Cole DR, Phelps TJ, Knauss KG. Potential environmental issues of CO2 storage in deep saline aquifers: geochemical results from the Frio-I brine pilot test, Texas, USA. Appl Geochem. 2009;24(6):1106–1112.
11. Kharaka YK, Thordsen JJ, Kakouros E, Ambats G, Herkelrath WN, Beers SR, Birkholzer JT, Apps JA, Spycher NF, Zheng L, Trautz RC, Rauch HW, Gullickson KS. Changes in the chemistry of shallow groundwater related to the 2008 injection of CO2 at the ZERT field site, Bozeman, Montana. Environ Earth Sci. 2010;60(2):273–284. doi:10.1007/s12665-009-0401-1.
12. Spangler LH, Dobeck LM, Repasky KS, Nehrir AR, Humphries SD, Barr JL, Keith CJ, Shaw JA, Rouse JH, Cunningham AB, Benson SM, Oldenburg CM, Lewicki JL, Wells AW, Diehl JR, Strazisar BR, Fessenden JE, Rahn TA, Amonette JE, Barr JL, Pickles WL, Jacobson JD, Silver EA, Male EJ, Rauch HW, Gullickson KS, Trautz RC, Kharaka YK, Birkholzer JT, Wielopolski L. A shallow subsurface controlled release facility in Bozeman, Montana, USA, for testing near surface CO2 detection techniques and transport models. Environ Earth Sci. 2010;60(2):227–239. doi:10.1007/s12665-009-0400-2.
13. Apps JA, Zheng L, Spycher N, Birkholzer JT, Kharaka YK, Thordsen JJ, Kakouros E, Trautz RC. Transient changes in shallow groundwater chemistry during the MSU ZERT CO2 injection experiment. Energy Procedia. 2011;4:3231–3238.
14. Xiao T, Dai Z, Viswanathan H, Hakala A, Cather M, Jia W, Zhang Y, McPherson B. Arsenic mobilization in shallow aquifers due to CO2 and brine intrusion from storage reservoirs. Sci Rep. 2017;7(1):2549. doi:10.1038/s41598-017-02849-z.
15. Xiao T, McPherson B, Esser R, Jia W, Dai Z, Chu S, Pan F, Viswanathan H. Chemical impacts of potential CO2 and brine leakage on groundwater quality with quantitative risk assessment: a case study of the Farnsworth Unit. Energies. 2020;13(24):6574. doi:10.3390/en13246574.
16. Shao H, Freiburg JT, Berger PM, Taylor AH, Cohen HF, Locke RA. Mobilization of trace metals from caprock and formation rocks at the Illinois Basin–Decatur Project demonstration site under geological carbon dioxide sequestration conditions. Chem Geol. 2020;550:119758. doi:10.1016/j.chemgeo.2020.119758.
17. Zhou Z, Zhang K, Callahan DL, Timms W. Shallow groundwater near a deep-well CO2 storage site—15 years of stable water quality for agricultural use. Environ Sci Pollut Res. 2025. doi:10.1007/s11356-025-35906-6.
18. Chadwick RA, Williams GA, Williams JDO, Noy DJ. Measuring pressure performance of a large saline aquifer during industrial-scale CO2 injection: the Utsira Sand, Norwegian North Sea. Int J Greenh Gas Control. 2012;10:374–388. doi:10.1016/j.ijggc.2012.06.022.
19. Kim J, Lee S, Ha S, Joun W, Ju YJ, Lee K. Natural 222Rn as a tracer of mixing and volatilization in a shallow aquifer during a CO2 injection experiment. Hydrol Process. 2020;34(26):5417–5428.
20. U.S. Environmental Protection Agency. EPA Announces Proposed Order Requiring Archer Daniels Midland Co. to Take Actions to Ensure Safe Operation of its Carbon Sequestration Well in Decatur, Illinois. Press release. Washington, DC: US EPA; 2024.
21. Bonte M, Van Breukelen BM, Stuyfzand PJ. Environmental impacts of aquifer thermal energy storage investigated by field and laboratory experiments. J Water Clim Change. 2013;4(2):77–89.
22. Possemiers M, Huysmans M, Batelaan O. Influence of aquifer thermal energy storage on groundwater quality: a review illustrated by seven case studies from Belgium. J Hydrol Reg Stud. 2014;2:20–34. doi:10.1016/j.ejrh.2014.08.001.
23. Fleuchaus P, Godschalk B, Stober I, Blum P. Worldwide application of aquifer thermal energy storage - A review. Renew Sustain Energy Rev. 2018;94:861–876.
24. Jesußek A, Grandel S, Dahmke A. Impacts of subsurface heat storage on aquifer hydrogeochemistry. Environ Earth Sci. 2013;69:1999–2012. doi:10.1007/s12665-012-2037-9.
25. Guo C, Li C, Zhang K, Cai Z, Ma T, Maggi F, Gan Y, El-Zein A, Pan Z, Shen L. The promise and challenges of utility-scale compressed air energy storage in aquifers. Appl Energy. 2021;286:116513. doi:10.1016/j.apenergy.2021.116513.
26. Heinemann N, Alcalde J, Miocic JM, Hangx SJT, Kallmeyer J, Ostertag-Henning C, Hassanpouryouzband A, et al. Enabling large-scale hydrogen storage in porous media – the scientific challenges. Energy Environ Sci. 2021;14(2):853–864.
27. Zivar D, Kumar S, Foroozesh J. Underground hydrogen storage: a comprehensive review. Int J Hydrogen Energy. 2021;46(45):23436–23462.
28. Thaysen EM, McMahon S, Strobel GJ, Butler IB, Ngwenya BT, Heinemann N, Wilkinson M, Hassanpouryouzband A, McDermott CI, Edlmann K. Estimating microbial growth and hydrogen consumption in hydrogen storage in porous media. Renew Sustain Energy Rev. 2021;151:111481. doi:10.1016/j.rser.2021.111481.
29. Braid H, Taylor K, Hough E, Rochelle C, Niasar V, Ma L. Hydrogen-induced mineral alteration: a review in the context of underground hydrogen storage (UHS) in saline aquifers. Earth-Sci Rev. 2024;104975. doi:10.1016/j.earscirev.2024.104975
30. Borghini L, Corradetti A, Del Ben A, Franceschi M, Bonini L. Underground hydrogen storage suitability index: a geological tool for evaluating and ranking storage sites. Int J Hydrogen Energy. 2025.
31. Iranfar S, Sadeghpour F, Shakiba M, Naderi M, Hassanpouryouzband A. Multi-criteria framework for ranking geological sites in underground hydrogen storage. Environ Sci Adv. 2026;5:107–117. doi:10.1039/D5VA00380F.
32. Derakhshani R, Lankof L, GhasemiNejad A, Zaresefat M. Artificial intelligence-driven assessment of salt caverns for underground hydrogen storage in Poland. Sci Rep. 2024;14(1):14246. doi:10.1038/s41598-024-64020-9.
33. Okoroafor ER, Saltzer SD, Kovscek AR. Toward underground hydrogen storage in porous media: reservoir engineering insights. Int J Hydrogen Energy. 2022;47(79):33781–33802. doi:10.1016/j.ijhydene.2022.07.239.
34. Chachadi AG, Lobo-Ferreira JP. Sea water intrusion vulnerability mapping of aquifers using GALDIT method. In: Proceedings of the Workshop on Modelling in Hydrogeology. Chennai: Anna University; 2001. p.143–156.
35. Ghijben WB. Nota in verband met de voorgenomen putboring nabij Amsterdam. Tijdschr K Inst Ing. 1888/1889:8–22.
36. Herzberg A. Die Wasserversorgung einiger Nordseebader. J Gasbeleucht Wasserversorg. 1901;44:815–819, 842–844.
37. Adepelumi AA, Ako BD, Ajayi TR, Afolabi O, Omotoso EJ. Delineation of saltwater intrusion into the freshwater aquifer of Lekki Peninsula, Lagos, Nigeria. Environ Geol. 2008;56(5):927–933. doi:10.1007/s00254-008-1194-3.
38. Roy DK, Sarkar TK, Munmun TH, Paul CR, Datta B. A review on the applications of machine learning and deep learning to groundwater salinity modeling: present status, challenges, and future directions. Discov Water. 2025;5:16. doi:10.1007/s43832-025-00207-z.
39. Haggerty R, Sun J, Yu H, Li Y. Application of machine learning in groundwater quality modeling: a comprehensive review. Water Res. 2023;233:119745. doi:10.1016/j.watres.2023.119745.
40. Aleardi M, Vinciguerra A, Stucchi E, Hojat A. Probabilistic inversions of electrical resistivity tomography data with a machine learning-based forward operator. Geophys Prospect. 2022;70(5):938–957.
41. Elder JW. Steady free convection in a porous medium heated from below. J Fluid Mech. 1967;27(1):29–48.
42. Diersch HJ, Kolditz O. Variable-density flow and transport in porous media: approaches and challenges. Adv Water Resour. 2002;25(8–12):899–944.
43. Baethge C, Goldbeck-Wood S, Mertens S. SANRA: a scale for the quality assessment of narrative review articles. Res Integr Peer Rev. 2019;4:5. doi:10.1186/s41073-019-0064-8.
44. Page MJ, McKenzie JE, Bossuyt PM, et al. The PRISMA 2020 statement: an updated guideline for reporting systematic reviews. BMJ. 2021;372:n71.
45. U.S. Environmental Protection Agency. Federal Requirements Under the Underground Injection Control (UIC) Program for Carbon Dioxide Geologic Sequestration (Class VI) Wells; Final Rule. Fed Regist. 2010;75(237):77230–77303.
46. Verdon JP, Kendall JM, Stork AL, Chadwick RA, White DJ, Bissell RC. Comparison of geomechanical deformation induced by megatonne-scale CO2 storage at Sleipner, Weyburn, and In Salah. Proc Natl Acad Sci USA. 2013;110(30):E2762–E2771. doi:10.1073/pnas.1302156110.
47. White JA, Chiaramonte L, Ezzedine S, Foxall W, Hao Y, Ramirez A, McNab W. Geomechanical behavior of the reservoir and caprock system at the In Salah CO2 storage project. Proc Natl Acad Sci USA. 2014;111(24):8747–8752. doi:10.1073/pnas.1316465111.