TAGRA 2024

Today, with the developing technology and industrialization, the wastewater brought by the rapid population growth parallel to industrial progress threatens the environment and ecosystems more and more every day. Synthetic dyes are seen as one of the biggest causes of environmental pollution. Synthetic dyes, especially azo-dyes, are used in many areas, especially in textiles, leather, construction, plastic, cosmetics, the pharmaceutical industry, and the plastic industry. Due to their large specific surface areas, high reactivity, and effective cleaning capacity in a short time, nano-sized sorbents have many advantages in removing heavy metal ions in the removal of azo dyes. Nano-sized magnetite (Fe3O4) particles are a method that can be used effectively in the removal of azo dyes due to their magnetic properties, large surface area, chemical stability, easy synthesis, and low toxicity. In this study, Fe3O4 NPs were synthesized, characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FTIR) techniques, then modified with natural materials, and the feasibility of photocatalytic azo dye removal was investigated. For this purpose, some parameters such as contact time, pH, dye concentration, and photocatalyst concentration were investigated. The obtained findings determined the optimal conditions for the removal of azo dyes and showed that modified Fe3O4 NPs can be used effectively in the removal of azo dyes from wastewater.