Akademik Veri Yönetim Sistemi
Chemical Engineering Research and Design, cilt.230, ss.912-924, 2026 (SCI-Expanded, Scopus)
This study examined cefixime (CFX) degradation and mineralization in water using hydrodynamic cavitation (HC), Bi2MoO6/CuWO4 photocatalyst, LED irradiation, and peroxymonosulfate (PMS). The Bi2MoO6/CuWO4 photocatalyst was successfully synthesized and characterized using XRD, FTIR, FESEM, EDX mapping, TEM, DRS, PL, BET, EIS, and photocurrent analyses. The effects of operational parameters including initial CFX concentration (5 − 30 mg/L), pH (3 − 11), catalyst loading (0.1 − 0.4 g/L), PMS concentration (0.1 − 0.4 mmol/L), and inlet pressure (1.0 − 4.0 bar) were systematically evaluated. Under optimal conditions (pH 7, CFX: 5.0 mg/L, catalyst: 0.4 g/L, PMS: 0.4 mmol/L, inlet pressure: 4.0 bar), the HC+LED+Bi2MoO6/CuWO4+PMS system achieved the highest CFX degradation efficiency of 99.55% and a pseudo-first-order rate constant of 5.42 min−1, along with a mineralization efficiency of 90.26%. Kinetic analysis confirmed that the degradation followed a pseudo-first-order model with excellent fitting accuracy. Quenching experiments revealed that hydroxyl radicals and sulfate radicals were the dominant reactive species contributing to CFX removal. The results highlight the critical role of synergistic interactions between HC, LED irradiation, Bi2MoO6/CuWO4, and PMS in enhancing CFX degradation. Overall, the proposed HC+LED+Bi2MoO6/CuWO4+PMS system offers an energy-efficient, cost-effective, and environmentally friendly strategy for the removal and mineralization of persistent antibiotics.