Akademik Veri Yönetim Sistemi
International Journal of Environmental Science and Technology, cilt.23, sa.1, 2026 (SCI-Expanded, Scopus)
Dyestuffs widely used in textile industries are toxic and persistent, posing ecological risks. Conventional physicochemical treatments often transfer pollutants to secondary media, making alternative methods essential. This study investigates the heterogeneous electro-Fenton (EF) process as a sustainable oxidation technique using FeO nanoparticles (FeO NPs) synthesized via green routes from FeCl3 and FeSO4·7H2O. Nanoparticles were characterized through SEM/EDS, FTIR, and XRD analyses. SEM revealed plate-like morphologies for NPs synthesized from FeCl3 metal salt and spherical shapes for NPs synthesized from FeSO4·7H2O metal salt; XRD indicated amorphous structures. FTIR confirmed phytochemical bonding within the FeO NP framework. Antioxidant potential was evaluated through Total Flavonoids, Phenolics, and DPPH assays, with the extract containing 1661.1 mg/L flavonoids and 677.6 mg/L phenolics. FeO NPs were applied as catalysts in the EF process to degrade Reactive Blue 222 (RB222). Experimental parameters were optimized using the Taguchi Orthogonal Array design, achieving 98.95% dye removal under conditions of pH 5, 0.15 g catalyst dosage, 12.5 V, 50 min, and 40 mM Na2SO4. ANOVA results identified time as the most influential factor, whereas pH had minimal effect. The R2 value in the Quadratic regression model, which is used to compare the experimental and predicted removal results, is 97.1%. Catalyst reusability was demonstrated across three cycles without significant efficiency loss. This work presents a promising, eco-friendly approach for treating dye-contaminated wastewater, contributing to the development of sustainable nanocatalyst-based advanced oxidation processes.