摘要
采用溶胶-凝胶法制备LaCoO3钙钛矿型催化剂用于紫外-催化湿式过氧化氢氧化煤化工废水膜浓缩液,表征了催化剂的结构,并考察了各因素对催化氧化效果的影响。结果表明,当H2O2投加量1.2 mL/L,催化剂投加量0.8 g/L,反应温度120℃,反应压强0.5 MPa,pH=3,反应时间60 min时,COD的去除率为89.7%,TOC的去除率为84.6%,UV254的去除率为97.2%。
The LaCoO3 perovskite catalyst was prepared through the sol-gel method and characterized in this study.Then it was employed for the UV-catalytic wet hydrogen peroxide oxidation of the membrane concentrate of coal chemical wastewater.The effects of various factors on the oxidation efficiency were investigated by single-factor experiments.When the dosage of H2O2 was 1.2 mL/L,the catalyst was 1.8 g/L,the reaction temperature was 120℃,the reaction pressure was 0.5 MPa,pH was 3,and the reaction time was 60 min,the removal rates of COD,TOC and UV254 reached 89.7%,84.6%and 97.2%,respectively.
作者
张永建
刘志英
刘璧铭
陆曦
滕月
程兴
徐炎华
Zhang Yongjian;Liu Zhiying;Liu Biming;Lu Xi;Teng Yue;Cheng Xing;Xu Yanhua(College of Environmental Science and Engineering,Nanjing Tech University,Nanjing 211800,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2019年第11期41-44,共4页
Industrial Water Treatment
基金
国家十三五重点研发课题(2017YFB0602500)
江苏省高校自然科学研究计划(16KJA610002)
