Fig. 4: Components characterization of WP and Product under optimal humification conditions (MW/2%KOH/2%PS). | Nature Communications

Fig. 4: Components characterization of WP and Product under optimal humification conditions (MW/2%KOH/2%PS).

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

Fig. 4: Components characterization of WP and Product under optimal humification conditions (MW/2%KOH/2%PS).

A Fourier Transform Infrared Spectrometer (FTIR) spectra and (B) Solid-state 13C Nuclear Magnetic Resonance (13C-NMR) spectra of SFA, Product and WP. C Thermo gravimetric analysis (TGA) spectra of WP and Product under nitrogen condition. D X-ray Diffraction (XRD) spectra of WP and Product. X-ray Photoelectron Spectroscopy (XPS) spectra of (E, F) C1s, (G, H) O1s for WP and Product. Conditions: WP = 50 g, KOH or PS dosage = 2 wt%, microwave time = 10 min, ambient temperature = 22 ± 1 oC. Each experiment was performed three times independently with similar results (n = 3). ND in Fig. 4H referred to not detected. Source data are provided as a Source Data file.

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