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| Preparation of Zero-Valent Iron Loaded on Fluorite Tailings-Based Porous Ceramics and Its Degradation of Methylene Blue Wastewater |
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Received:August 27, 2023
Revised:September 04, 2023
Accepted:September 07, 2023
Published Online:November 30, 2023
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| DOI：doi：10.3969/j.issn.1007-7545.2024.01.013 |
| KeyWord:fluorite tailings; porous ceramics; carbon reduction method; zero-valent iron; methylene blue |
| Author | Institution |
| XU Guorui |
苏州大学沙钢钢铁学院 |
| LI Yu |
苏州大学沙钢钢铁学院 |
| CHAO Wenzheng |
苏州大学沙钢钢铁学院 |
| BU Lili |
苏州大学沙钢钢铁学院 |
| LUO Yuyao |
苏州大学沙钢钢铁学院 |
| ZHAO Wei |
苏州大学沙钢钢铁学院 |
| FU Lichun |
苏州大学沙钢钢铁学院 |
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| 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. |
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