La改性纳米材料及其处理杀螟丹废水性能的研究  

La modified nanomaterials and its performance in treating cartap wastewater

作　　者：许修远 田学鹏 张宁 周露 屠国鑫 张宇峰 Xu Xiuyuan;Tian Xuepeng;Zhang Ning;Zhou Lu;Tu Guoxin;Zhang Yufeng(School of Environmental Science and Engineering,Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]南京工业大学环境科学与工程学院,江苏南京211800

出　　处：《工业水处理》2020年第9期94-98,共5页Industrial Water Treatment

摘　　要：采用超声浸渍法制备出La/Co/γ-Al2O3复合催化剂,与微波催化氧化技术联用,应用于杀螟丹模拟废水COD的降解;采用XRD、TEM、SEM、BET对催化剂进行表征,结果表明,Co/γ-Al2O3经La改性后团聚现象得到改善,活性组分能较为分散地负载在载体表面。实验结果表明,在pH为5.5,微波功率为450 W,催化剂投加量为0.5 g,H2O2投加量为0.25 mL时,La/Co/γ-Al2O3的催化活性最高可达88.2%,在回收再用实验中,表现出良好的稳定性。La/Co/γ-Al2O3 composite catalyst was prepared by ultrasonic impregnation method.It was applied to de-grade COD in the simulated wastewater of cartaps in combination with microwave catalytic oxidation technology.The catalyst was characterized by XRD,TEM,SEM,BET.The results showed that the agglomeration phenomenon of Co/γ-Al2O3 after La modification was improved,and the active component could be dispersed on the surface of the carr-ier.The experimental results showed that the catalytic activity of La/Co/γ-Al2O3 could reach up to 88.2%at pH 5.5,microwave power 450 W,catalyst dosage 0.5 g and hydrogen peroxide dosage 0.25 mL.In the recycling experiment,the catalyst showed good stability.

关 键 词：La复合催化剂 杀螟丹废水 微波催化氧化 回收再用 

分 类 号：X703.1[环境科学与工程—环境工程]