Comparative analysis of lithium enrichment mechanisms in aquifers in the Benue Trough

Rhoda Gusikit; Solomon  Yusuf; Hyeladi  Dibal; Victor Diyelmak; Ahmed  Haruna

doi:10.46481/jnsps.2025.2389

Authors

Rhoda Bernard Gusikit
[email protected]
Department of Geology, Faculty of Natural Sciences, University of Jos, Jos (930001), Nigeria
Solomon Nehemiah Yusuf Department of Geology, Faculty of Natural Sciences, University of Jos, Jos (930001), Nigeria
Hyeladi Usman Dibal Department of Geology, Faculty of Natural Sciences, University of Jos, Jos (930001), Nigeria
Victor Bulus Diyelmak Department of Geology, Faculty of Natural Sciences, University of Jos, Jos (930001), Nigeria
Ahmed Isah Haruna Abubakar Tafawa Balewa University, Bauchi

Keywords:

Lithium concentrations, Ground water, Benue Trough

Abstract

This study investigates the extractability of lithium for energy use from groundwater sources in the Awe part of the Middle Benue Trough. Field measurements of electrical conductivity (EC), total dissolved solids (TDS), temperature, and pH were conducted using a portable meter. Lithium concentrations in 53 groundwater sources, including 17 well samples, 31 borehole samples, and 5 springs were sampled and analysed using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Oxygen isotopes (?¹⁸O) were analysed using CO₂ equilibration, and hydrogen isotopes (?²H) were analysed by thermochemical reduction to characterize the aquifers. The results indicate that three well water samples (A18, A19, and A38a) have lithium concentrations within seawater values (100-200 µg/L). Similarly, three borehole samples (A6, A15, and A38b) fall within this range, while three other borehole samples A17(794.6 µg/L), A35a(1,826 µg/L), and A37b(330.2 µg/L) exhibit significantly higher concentrations respectively. Among the spring water samples, three samples have lithium concentrations below seawater values, while the remaining two samples A13(1,810 µg/L) and A35b(1,968 µg/L) show elevated levels. Isotopic analysis of ?²H and ?¹⁸O identified three distinct types of aquifers in the study area. Water from the deeper aquifer contains high concentrations of lithium, TDS, EC, and elevated temperatures. The lithium concentrations in the deeper saline aquifers A13(1810 µg/L) and A35b(1968 µg/L)suggest significant potential for extraction and use as an energy source.

Dimensions

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