Reducing spontaneous combustion propensity of lignite through functional group regulation by microbial flame retardant.

Front Chem · 2026 · PMC12956303 · PMID 41783409

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an overall trendno p-value reported

From the fitting curve in the figure, the coal’s spontaneous combustion propensity shows an overall trend of first increasing then decreasing with increasing treatment time.

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a positive trendno p-value reported

Linear fitting showed a positive trend between oxygen-containing functional group content and critical temperature ( Figure 7a ).

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