以Na基膨润土和TiO2为原料制备复合光催化材料,借助扫描电镜、X射线衍射技术对材料进行表征,再将其应用到Fenton-紫外协同催化体系中去除水中的多环芳烃。在研究催化剂投加量、搅拌方式、Fenton投加量等单因素影响的基础上进行正交试验。结果表明:协同催化体系对多环芳烃(PAHs)的去除率大于普通TiO2光催化;室温条件下磁力搅拌、紫外光照射3h,复合催化材料投加量1.8g,Fenton投加30mL时,协同催化体系对PAHs的去除效果最高为94%。
Na-bentonite and TiO2 were used as raw materials to prepare composite photocatalytic materials,which were characterized by SEM and XRD,and then applied to the fenton-uv co-catalytic system to remove polycyclic aromatic hydrocarbon (PAHs) in water.Orthogonal experiments were carried out on the basis of studying the influence of single factors such as catalyst dosage,agitation mode and fenton dosage.The results showed that the removal rate of PAHs in the collaborative catalytic system was higher than that of ordinary TiO2.At room temperature,when magnetic stirring and ultraviolet irradiation were applied for 3h,the adding amount of TiO2/bentonite was 1.8g,and when fenton was added 30mL,the removal effect of PAHs was up to 94%.
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