二硫化钼负载酸化活性炭高级氧化固定床反应器水中有机污染物处理  

Treatment of organic pollutants in water by advanced oxidation fixed-bed reactor packed with molybdenum disulfide loaded with acidified active carbon

作　　者：丁志铎 安志军 周豪[1] 吴明火[1] 柳丽芬[1] DING Zhiduo;AN Zhijun;ZHOU Hao;WU Minghuo;LIU Lifen(School of Chemical Engineering,Ocean and Life Sciences,Dalian University of Technology,Panjin 124221,China)

机构地区：[1]大连理工大学化工海洋与生命学院,辽宁盘锦124221

出　　处：《大连理工大学学报》2024年第5期455-460,共6页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(41977197).

摘　　要：针对以亚铁离子(Fe^(2+))为活化剂的类芬顿高级氧化体系在有机废水处理中易产生铁泥且影响处理效率的问题,制备了二硫化钼(MoS_(2))负载酸化活性炭(AC)复合材料,并将其作为高级氧化固定床反应器(FBR)填料,以Fe^(2+)活化的过硫酸盐体系(Fe^(2+)/PS)对有机废水进行高效处理.该复合材料中,MoS_(2)有助催作用,可以提升有机废水降解效率,酸化后的活性炭则可对Fe^(3+)和Fe^(2+)形成保留,提高铁源的利用率.实验结果表明,负载经磷酸和硫酸联合处理的活性炭(PSAC)复合材料,在所构建的Fe^(2+)/PS/MoS_(2)@PSAC体系中对阿特拉津(ATZ)的降解效果最佳.经过对反应条件的优化,该高级氧化FBR体系可以在低Fe^(2+)浓度(18μmol/L)及高流速(2 mL/min)下对500 mL废水中的ATZ(20 mg/L)保持90%以上的去除率.A composite material of molybdenum disulfide(MoS_(2))loaded with acidified active carbon(AC)is prepared to address the problem of iron sludge generation and reduced efficiency in the treatment of organic wastewater by Fenton-like advanced oxidation system using ferrous ion(Fe^(2+))as the activator.The composite material is packed to an advanced oxidation fixed-bed reactor(FBR)for the efficient treatment of organic wastewater using activated persulfate system by Fe^(2+)(Fe^(2+)/PS).In the composite material,MoS_(2) plays as a co-catalyst to improve the degradation efficiency of organic wastewater,and acidified AC can retain Fe^(3+)and Fe^(2+)to improve the iron source utilization efficiency.Experimental results show that the composite material loaded with AC which is treated with phosphoric-sulfuric acid(PSAC)exhibits the best degradation performance to atrazine(ATZ)in Fe^(2+)/PS/MoS_(2)@PSAC system.After optimization of the reaction conditions,the advanced oxidation FBR system can be operated at low Fe^(2+)concentration(18μmol/L)and high flow rate(2 mL/min)to treat 500 mL of ATZ wastewater(20 mg/L)with a removal rate of over 90%.

关 键 词：固定床 高级氧化反应器 二硫化钼 离子交换 阿特拉津 

分 类 号：X52[环境科学与工程—环境工程]