Fig. 1: Characteristics of anaerobic sludge and chemical diversity of DOM in the two-stage anaerobic digestion. | Nature Communications

Fig. 1: Characteristics of anaerobic sludge and chemical diversity of DOM in the two-stage anaerobic digestion.

From: Decomposing the molecular complexity and transformation of dissolved organic matter for innovative anaerobic bioprocessing

Fig. 1

a Physical-chemical properties of sludges in food waste treatment plants (FTWPs). Each parameter represents the mean ± standard deviation (SD) from seven biologically independent replicates. Red dots indicate sampling locations, and VFAs include C₂–C₈ fatty acids, as detailed in Supplementary Table 2. b Comparative analysis of chemical diversity (molecular richness) of DOM across various environments. More detailed information on molecular characteristics is provided in Supplementary Table 1. Relationship between molecular richness and abundance for (c) element combination and (d) compound classes. Here, molecular richness refers to the number of unique formulae within a defined molecular group, while molecular abundance represents the weighted contribution of these formulae based on their relative intensity.

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