Abstract
Degradation of biorefractory compounds in wastewater generated from a chemical industry using iron (II) Schiff base complex as homogeneous catalyst. The complex of iron (II) Schiff base was derived from o-vanillin and allyl thio urea. The ligand and the complex were characterized using FT-IR, UV–Visible, fluorescence spectroscopy, SEM–EDX, and elemental composition. The optimized conditions for degradation were carried out with different time, pH, temperature, dosage of the complex, and H2O2. The chemical oxygen demand was reduced from 3,360 to 1,200 mg/L (64.3% reduction) at the optimized conditions such as pH, temperature, iron (II) Schiff base complex, and H2O2. The degradation of chemicals in wastewater was confirmed with the 13C-NMR, 1H-NMR, high performance liquid chromatography (HPLC), and fluorescence spectroscopy.
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