The statistical significance of the data was confirmed by analysis of variance (ANOVA) with the LSD post-hoc test using SPSS 25.0; ∗ P < 0.05 and ∗∗ P < 0.01 were respectively defined as statistically significant and highly significant. 3 Results and discussion 3.1 Methane generation from PI-pretreated WAS in anaerobic digestion The cumulative methane yield from WAS pretreated with varying PI dosages is shown in Fig. 1 a.
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Enhanced anaerobic digestion of waste activated sludge with periodate-based pretreatment.
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