摘要
为了探究共混型臭氧氧化催化剂在实际废水中的应用效果,以拟薄水铝石为载体,二氧化锰、二氧化钛粉末为活性组分,采用共混-焙烧的方式制备了MnO_(2)-TiO_(2)/γ-Al_(2)O_(3)臭氧氧化催化剂,采用SEM-EDS、TEM、XRD表征其结构.以维生素K3车间废水为目标降解物,通过控制活性组分质量比、活性组分负载量、焙烧温度、臭氧输出浓度等实验参数探究了臭氧氧化催化剂的催化性能.结果表明,在活性组分质量分数为12%、MnO_(2):TiO_(2)质量比为7:3、焙烧温度为500℃时为催化剂最佳制备条件,臭氧输出浓度为50 mg/L时,催化臭氧氧化COD降解率能达到79%,相比于单独臭氧氧化提高了39%.GC-MS分析表明,在反应过程中,废水中的主要有机物甲萘醌和烟酰胺降解率达到95%左右.
To investigate the practical application of blended ozone oxidation catalysts in wastewater treat⁃ment,a MnO_(2)-TiO_(2)/γ-Al2O_(3)ozone oxidation catalyst was prepared using a blending-calcination method with pseu⁃doboehmite as the carrier and manganese dioxide and titanium dioxide powders as active components.Its structure was characterized by SEM-EDS,TEM,and XRD.The catalytic performance of ozone oxidation catalyst was explored by controlling the experimental parameters such as the mass ratio of active components,the loading of active compo⁃nents,the roasting temperature,and the ozone output concentration.The results showed that the optimal preparation conditions for the catalyst were when the mass fraction of the active component was 12%,the mass fraction of MnO_(2):TiO_(2) was 7:3,and the roasting temperature was 500℃.When the ozone output concentration is 50 mg/L,the degra⁃dation rate of catalytic ozone oxidation COD can reach 79%,which is 39%higher than that of ozone oxidation alone.GC-MS analysis showed that the degradation rate of the main organic compounds in the wastewater,menaquinone and nicotinamide,reached more than 95%during the reaction process.
作者
方宽
高继康
刘小华
唐杰
谢友才
FANG Kuan;GAO Jikang;LIU Xiaohua;TANG Jie;XIE Youcai(School of Resources and Environmental Engineering,Mianyang Normal University,Mianyang,Sichuan 621000;Sichuan Yinhe Chemical Co.,Mianyang,Sichuan 622656)
出处
《绵阳师范学院学报》
2025年第8期86-92,共7页
Journal of Mianyang Teachers' College
作者简介
第一作者:方宽(1998-),男,河南长垣人,硕士研究生,研究方向:工业废水处理;通信作者:唐杰(1972-),男,四川资阳人,教授,博士,硕士生导师,研究方向:新材料制备及工业废水处理.
