This research was carried out based on the significance of protecting the environment by preventing the contamination of water caused from effluents discharge from dyeing industries, effective nanocomposite were prepared to solve this problem. The poly(azomethine), ZnO, and poly(azomethine)/ZnO nanocomposites were prepared and characterized by Fourier transform-infrared spectroscopy, ultraviolet (UV)–visible spectroscopy, powder X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDAX), scanning electron Microscope (SEM), and transmission electron microscopy (TEM) techniques. Methylene blue (MB), Malachite green (MG), and Bismarck brown (BB) were degraded from water using poly(azomethine) (PAZ), zinc oxide (ZnO), PAZ/ZnO (PNZ) nanocomposites as photocatalyst in the presence of natural sunlight. The degradation efficiency and reaction kinetics were calculated, and the outcome of the photocatalytic experiments proved that the PAZ/ZnO nanocomposites reveals excellent photocatalytic activity and effective for decolorization of dye containing waste water than PAZ and ZnO in the presence of natural sunlight. The maximum degradation efficiency 97%, 96%, and 95% was obtained for PNZ nanocomposites at optimum dosage of catalyst as 500 mg and 50 ppm of MB, MG, and BB dye concentration, respectively. The maximum degradation time was 5 h. After photocatalytic study, the samples were characterized by Fourier-transform infrared spectroscopy (FT-IR) and UV–visible spectroscopy.
The present paper has virtual importance on the physicochemical characteristics of both underground water and surface water in various places of Coimbatore in the summer season (March-June 2021). The surface water tests were gathered from near lakes around Coimbatore, Pollachi, and Tirupur the underground water was gathered from near, Pollachi, Coimbatore, and Tirupur. The physicochemical properties such as Dissolved Oxygen, TDS, pH, Turbidity, Alkalinity, Calcium, Total hardness, Chloride, Nitrates, Nitrites, Fluorides, Potassium, and Sodium were tested. The outcome results showed that the analyzed ground and surface water is fit for domestic purposes and not for drinking purposes.
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