SiO_(2)纤维负载金属组分催化臭氧降解化工废水

Catalytic ozonation of chemical wastewater by metal component supported silica fibers

以静电纺丝制多孔二氧化硅纤维(Epsf)为催化剂载体,以Co、Zn作为双金属活性组分,采用等体积浸渍法制备Co-Zn/Epsf双金属负载型催化剂,并对其进行SEM、XRF等技术表征,探究该催化剂催化臭氧降解化工废水的效果。结果表明,当催化剂中Zn、Co双金属组分质量比为1∶1时,其协同臭氧对废水具有较好的处理效果,100 min后,废水COD降解率为97.1%;且催化剂重复使用7次后,废水COD降解率仍可达79.1%。

Electrospinning porous silica fiber(Epsf)prepared by electrospinning as the catalyst carrier,took Co and Zn as bimetallic active components.The bimetallic load-type catalyst was prepared by the equal volume impregnation method,and the technical features of SEM,XRF were used to explore the effect of its application on the degradation effect of chemical wastewater.The results showed that when the mass ratio of the Zn and Co bimetal components in the catalyst was 1∶1,its synergistic ozone had a good treatment effect on wastewater.The COD degradation rate of wastewater was 97.1%within 100 min,and after the catalyst was reused 7 times,the COD degradation rate of wastewater could still reach 79.1%.