Preparation and Diagnosis of Nano-Titanium Dioxide and Its Use for Industrial Water Treatment

Titanium dioxide (TiO₂) nanoparticles were successfully synthesized, and their properties were accurately characterized using a range of advanced analytical techniques. These characterization methods included scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD). The synthesized TiO₂ nanoparticles were then effectively used as adsorbents to remove Eriochrome Black-T (EBT), a common contaminant, from industrial effluent. The study of the adsorption process revealed the optimal conditions for efficient removal of the dye. It was found that maximum adsorption efficiency could be achieved within a relatively short contact time of 20 minutes, using a precise dose of 0.05 grams of TiO₂ nanoparticles. Thermodynamic analysis of dye adsorption revealed a clear relationship between temperature and adsorption performance. Specifically, an increase in temperature led to a decrease in overall adsorption efficiency. This observation is of great significance as it strongly suggests that the adsorption process is exothermic in nature. Furthermore, as adsorption is a spontaneous process, the decrease in adsorption with rising temperature also implies a reduction in randomness or disorder within the system during the adsorption process. The study has unequivocally demonstrated the great potential of these TiO₂ nanomaterials for use in wastewater treatment. Their effectiveness stems from several inherent key properties, notably their high surface activity, which provides numerous sites for interaction with pollutants, and their well-documented photocatalytic properties. Taken together, these properties enable TiO₂ nanoparticles to effectively remove hazardous substances, even when these pollutants are present in wastewater at very low concentrations. This highlights their promising potential as a sustainable and effective solution for environmental remediation.