Fig. 3: WP humification efficiency comparison between KOH/PS and MW/KOH/PS. | Nature Communications

Fig. 3: WP humification efficiency comparison between KOH/PS and MW/KOH/PS.

From: Microwave-alkali co-activated persulfate enables minute-scale fertilization of food waste with high fulvic-like acid yield

Fig. 3: WP humification efficiency comparison between KOH/PS and MW/KOH/PS.

3D-EEM fluorescence spectra of WP treated by (A) 2%KOH/2%PS, (B) 6%KOH/6%PS and (C) 8%KOH/8%PS for 60 min without MW. D Fulvic-like acid (FLA) content of WP and the product after MW/2%KOH/2%PS and 8%KOH/8%PS treatment. E Temperature variation of the reaction system under different treatment conditions. F Total organic carbon (TOC) and total nitrogen (TN) loss under different treatment conditions. Conditions: WP = 50 g, KOH or PS dosage = 2–8 wt%, ambient temperature = 22 ± 1 oC. Each experiment was performed three times independently with similar results (n = 3). Error bars in (D, F) represent the standard deviations from triplicate tests. Data are presented as mean values  ±  s.d. Source data are provided as a Source Data file.

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