萤石尾矿基多孔陶瓷负载零价铁的制备及其降解亚甲基蓝废水  

Preparation of Zero-Valent Iron Loaded on Fluorite Tailings-Based Porous Ceramics and Its Degradation of Methylene Blue Wastewater

作　　者：许国瑞 李煜 巢文正 卜丽丽 罗淯耀 赵伟 符丽纯 XU Guorui;LI Yu;CHAO Wenzheng;BU Lili;LUO Yuyao;ZHAO Wei;FU Lichun(School of Iron and Steel,Soochow University,Suzhou 215006,Jiangsu,China;Jiangsu Chianaref Refractory Co.,Ltd.,Yixing 214200,Jiangsu,China)

机构地区：[1]苏州大学沙钢钢铁学院,江苏苏州215006 [2]江苏嘉耐高温材料股份有限公司,江苏宜兴214200

出　　处：《有色金属（冶炼部分）》2024年第1期106-113,共8页Nonferrous Metals（Extractive Metallurgy)

基　　金：冶金减排与资源综合利用教育部重点实验室开放基金资助项目(JKF23-01);国家自然科学基金资助项目(52104336);苏州大学大学生创新创业训练计划项目(202210285053Z)。

摘　　要：以工业固体废弃物萤石尾矿和高炉粉尘为主要原料,通过碳热还原法制备了萤石尾矿基多孔陶瓷负载零价铁(FT/BFD@Fe^(0))复合材料,并用于降解亚甲基蓝(MB)废水。系统探究了废水pH、废水初始浓度、高炉粉尘添加量、FT/BFD@Fe^(0)投加量、温度对FT/BFD@Fe^(0)吸附性能的影响,并探究了相关反应机理。结果表明,当pH=7、初始MB质量浓度20 mg/L、高炉粉尘添加量15%、FT/BFD@Fe^(0)投加量10 g/L、温度15℃时,FT/BFD@Fe^(0)对亚甲基蓝的去除效率在3 h内达到了92.0%。热力学分析与动力学模型表明,FT/BFD@Fe^(0)对亚甲基蓝吸附反应过程符合准二级动力学模型和Langmuir模型。Multi-porous ceramic supported zero-valent iron(FT/BFD@Fe^(0))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@Fe^(0) dosage,and temperature on the adsorption performance of FT/BFD@Fe^(0) were thoroughly studied,and the associated reaction mechanisms were explored.The results indicate that the removal efficiency of methylene blue by FT/BFD@Fe^(0) 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@Fe^(0) 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@Fe^(0) conforms to the quasi-second-order kinetics and the Langmuir model.

关 键 词：萤石尾矿 多孔陶瓷 碳热还原法 零价铁 亚甲基蓝 

分 类 号：X756[环境科学与工程—环境工程]