Due to the use of dangerous dyes, these industrial effluents have a disastrous impact on aquatic life and people. Since azo dyes are the most widely used dyes and the main source of environmental concern due to their complicated structural makeup and resistive character, they affect both people and the environment. Every year, approximately 3 × 10 8 kg of dyes are discharged into wastewaters globally. The synthetic dyes used in the coloring process are a major reason for concern among all pollutants since the bulk of the dye is discharged into the effluent and only a very small percentage of the dye binds to the fabric. Large amounts of wastewater, including a variety of biodegradable and non-biodegradable contaminants, are produced by the textile industry.

Large amounts of pollutants are released into freshwater resources by several enterprises.

Rapid industrialization has led to an excessive increase in chemical use, which has gradually increased environmental damage, notably water contamination. Water, a significant asset with unique properties, is essential for the survival of living organisms, hydroelectric power generation, industries and conveyance. In conclusion, SeNPs were successfully biosynthesized using A. terreus and demonstrated both antimicrobial and photocatalytic activities. Results illustrated that SeNPs exhibited rapid biodegradation of malachite green dye, reaching up to 89% after 240 min. The efficacy of mycosynthesized SeNPs for the decolorization of malachite green dye was investigated. albicans, where the inhibition zone was 12 mm. However, it had weak antifungal activity against C.

Results showed that mycosynthesized SeNPs exhibited promising antibacterial activity against both Gram-positive and Gram-negative bacteria where inhibition zones were 14, 20, 16, and 13 mm toward S. The results of the characterization process showed that the mycosynthesized SeNPs had spherical shapes and sizes less than 100 nm. The mycosynthesized SeNPs were characterized by UV-visible spectrophotometry, Fourier transform infrared spectroscopy, X-ray diffraction spectroscopy, dynamic light scattering, transmission electron microscopy, and scanning electron microscopy. In the current study, a cell-free extract of Aspergillus terreus was used as a reducing and stabilizing agent in the synthesis of SeNPs using a green and eco-friendly method. Selenium nanoparticles (SeNPs) have a high absorption rate during routine supplementation. Selenium (Se) is a nutritional component necessary for animal and plant development and reproduction.

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