MoS_(2)负载型陶粒催化剂非均相Fenton处理造纸废水  

Heterogeneous Fenton treatment of papermaking wastewater with MoS_(2) supported ceramic catalyst

作　　者：刘雨恺 罗清 薛伟 段超 张梓悦 郭鑫 白雨柔 潘静欢 LIU Yu-kai;LUO Qing;XUE Wei;DUAN Chao;ZHANG Zi-yue;GUO Xin;BAI Yu-rou;PAN Jing-huan(College of Bioresources Chemical and Materials Engineering,National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi′an 710021,China;China Haicheng Engineering Technology Co.,Ltd.,Shanghai 200031,China)

机构地区：[1]陕西科技大学轻工科学与工程学院轻化工程国家级实验教学示范中心,陕西西安710021 [2]中国海诚工程科技股份有限公司,上海200031

出　　处：《陕西科技大学学报》2024年第4期33-40,共8页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(31700510);广西清洁化制浆造纸与污染控制重点实验室项目(2021KF16);陕西省大学生创新创业训练计划项目(S202210708087)。

摘　　要：通过分散-浸渍-烧结工艺制备MoS_(2)负载型陶粒催化剂.采用XRD、SEM、EDS对催化剂的物相结构、微观形貌、元素分布进行表征分析.结果表明,MoS_(2)均匀负载到铁泥基陶粒催化剂表面,催化剂粗糙的表面结构将会在反应中暴露更多的活性位点.以CODCr去除率为评判指标,探究pH、m(CODCr)∶m(H_(2)O_(2))、催化剂用量、反应时间对MoS_(2)负载型陶粒催化剂非均相Fenton处理造纸废水的影响.结果表明,最佳工艺条件为:pH为2.5、催化剂投加量30 g/L、m(CODCr)∶m(H_(2)O_(2))=1∶1.5、反应时间120 min,造纸废水CODCr去除率为72.52%.并通过自由基猝灭实验得出在非均相Fenton氧化体系中,降解有机污染物的活性物质主要是·OH、^(1)O_(2)、·O_(2)^(-).MoS_(2)-supported ceramic filler catalyst is prepared by dispersion-impregnation-sintering process.The phase structure,microstructure and element distribution of the catalyst are characterized and analyzed by XRD,SEM and EDS.The results showed that MoS_(2) is uniformly loaded on the surface of iron mud-based ceramic filler,and the rough surface structure of the catalyst would expose more active sites in the reaction.With COD Cr removal rate as the evaluation index,the effects of pH,m(COD_(Cr))∶m(H_(2)O_(2)),catalyst dosage and reaction time on heterogeneous Fenton treatment of papermaking wastewater by MoS_(2) supported ceramsite filler catalyst are investigated.The results showed that under the optimal conditions of pH 2.5,catalyst dosage 30 g/L,m(COD Cr)∶m(H_(2)O_(2))=1∶1.5,reaction time 120 min,the COD_(Cr) removal rate of papermaking wastewater was 72.52%.The free radical quenching experiment showed that in the heterogeneous Fenton oxidation system,The active substances that degrade organic pollutants are mainly·OH,^(1)O _(2),·O_(2)^(-).

关 键 词：催化剂 造纸废水 非均相FENTON 活性基团 

分 类 号：X793[环境科学与工程—环境工程]