Abstract:Multi-porous ceramic supported zero-valent iron (FT/BFD@Fe0) composite based on industrial solid waste fluorite tailings and blast furnace dust was prepared by carbon thermal reduction method, and was used to degrade methylene blue (MB) wastewater. The effects of wastewater pH value, initial wastewater concentration, blast furnace dust additive amount, FT/BFD@Fe0 dosage, and temperature on the adsorption performance of FT/BFD@Fe0 were thoroughly studied, and the associated reaction mechanisms were explored. The results indicate that the removal efficiency of methylene blue by FT/BFD@Fe0 is 92.0% within 3 hours under the conditions including pH value of 7, initial MB mass concentration of 20 mg/L, blast furnace dust additive amount of 15%, FT/BFD@Fe0 additive amount of 10 g/L, and temperature of 15 ℃. Thermodynamic analysis and kinetic models reveal that the adsorption process of methylene blue by FT/BFD@Fe0 conforms to the quasi-second-order kinetics and the Langmuir model.