Mechanisms of Elevated Sulfate Concentrations in High Geotemperature Coal Mining Areas

International Journal of Natural Resources and Environmental Studies, Journal Year: 2025, Volume and Issue: 5(3), P. 79 - 86

Published: April 25, 2025

Sulfate (SO₄²⁻) contamination in groundwater within mining areas has garnered widespread global attention, while prolonged coal activities have further complicated geological conditions and hydrogeochemical environments. This study investigates the sources evolution of SO₄²⁻ Pingdingshan area based on multi-year hydrochemical data. Key findings are as follows:Ion correlation analysis demonstrates that cation exchange between Na⁺ Ca²⁺/Mg²⁺ dominates processes groundwater; Spatiotemporal sulfate variations, analyzed through data statistical methods, reveal concentrations sandstone aquifer exhibit most significant fluctuations under impacts, whereas phreatic limestone oscillate a range 200 mg/L; Comparative (high geotemperature area) Jiaozuo (ambient-temperature regions indicates elevated geotemperature, water circulation, water-rock interactions enhance mineral dissolution sulfide oxidation, leading to anomalously high elucidates migration mechanisms area, providing critical insights for mitigating systems North China.

Language: Английский

Spatiotemporal characterization of the isotopic composition of meteoric waters in Cuba

Scientific Data, Journal Year: 2024, Volume and Issue: 11(1)

Published: Dec. 19, 2024

Language: Английский