蒙脱土负载稀土La类芬顿降解考马斯亮蓝的研究

Degradation of Coomassie brilliant blue by montmorillonite loading lanthanum heterogeneous Fenton-like process

以考马斯亮蓝为目标污染物,应用类芬顿法进行降解处理。利用蒙脱土的双层结构负载稀土镧(La)制备多相催化剂,研究了蒙脱土负载稀土La量、过氧化氢用量、催化剂用量、底物初始质量浓度、污水p H对处理效果的影响。结果表明,蒙脱土负载稀土La提高了芬顿反应的效率;每处理100 m L模拟废水,当底物初始质量浓度为50 mg/L,催化剂用量为0.8 g/L,双氧水用量为40 m L/L,污水p H=3时,考马斯亮蓝污水的去除率可达93.33%。

Coomassie brilliant blue as the target pollutants was degraded by Fenton-like method.Hetero-geneous catalyst was prepared by montmorillonite of double deck structure which loaded the rare earth(La).The effects of hydrogen peroxide concentration,catalyst dosage,substrate concentration,and wastewater pHon removal ratio were investigated.The experimental results showed that the efficiency of Fenton reactionwas improved by montmorillonite loaded the rare earth La.When the conditions were simulated wastewater100mL,the initial concentration of substrates50mg/L,catalyst dosage0.8g/L,the concentration of hydrogenperoxide40mL/L,pH=3,the removal rate of Coomassie brilliant blue could reach93.33%.