Mechanism of Changes in Goaf Water Hydrogeochemistry: A Case Study of the Menkeqing Coal Mine.

Int J Environ Res Public Health · 2022 · PMC9819404 · PMID 36612858

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a decreasing trendno p-value reported

Therefore, oxidation of pyrite leads to elevated SO 4 2− in goaf water. (6) FeS 2 + 7 2 O 2 + H 2 O → Fe 2 + + 2 SO 4 2 − + 2 H + According to the changes of the conventional indexes of the goaf water in Section 4.2 , it can be seen that the pH, DO, and ORP of the goaf water show a decreasing trend with time.

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