• • Continuous manufacturing achieved with disc pelletizer parameters: rotation speed 30–60 r·min−1, disc angle 45°, alkali activator modulus 1.5, alkali activator-to-water mass ratio 3:1, solid-to-liquid ratio 4:1; equipment capacity utilization >80%, granulation rate >90%.
• • FMG catalyst retained 87.27% catalytic activity after 15 reuse cycles and maintained TOC removal of 69.44%–75.46% over 60 days of continuous-flow operation, demonstrating exceptional long-term stability.
• • Production cost of FMG is 1,351.44 CNY·t−1, with unit TOC removal cost of 0.06 CNY·(g TOC)−1, achieving a cost reduction of 78.69%–86.85% compared to commercial catalysts (0.30–0.48 CNY·(g TOC)−1).
• • Radical quenching experiments identified ·OH as the primary reactive species; Fe0 acts as an electron donor, driving the redox cycling of Mn species (Mn3+ to Mn2+), which enhances ozone decomposition and catalytic activity.