复合氮源对钴掺杂氮化碳降解酚类污染物的影响研究  

Study on effect of composite nitrogen source on degradation of phenolic pollutants by cobalt-doped carbon nitride

作　　者：杨泽东 汪炎[2] 章保[2] 夏明乐 赵鲁 张爱勇[1] YANG Zedong;WANG Yan;ZHANG Bao;XIA Mingle;ZHAO Lu;ZHANG Aiyong(Department of Municipal Engineering,School of Civil Engineering,Hefei University of Technology,Hefei 230009,China;East China Engineering Science and Technology Co.,Ltd.,Hefei 230024,China)

机构地区：[1]合肥工业大学土木与水利市政工程系,合肥230009 [2]东华工程科技股份有限公司,合肥230024

出　　处：《工业用水与废水》2023年第6期49-54,共6页Industrial Water & Wastewater

基　　金：国家自然科学基金项目(22076036);安徽省科技重大专项(202103a07020016);安徽省重点研发计划项目(2023t07020004)。

摘　　要：为实现对工业废水中典型酚类污染物的高效去除,采用热聚合三聚氰胺和尿素的复合前驱体制备Co掺杂石墨氮化碳,同时进行二次煅烧制备出O-Co/C3N4-M∶U=7∶3催化剂,通过单因素试验确定最佳反应参数。在PMS浓度为1.0 mmol/L,pH值为7.0,催化剂投加量为0.1 g/L,反应时间为5.0 min的试验条件下,O-Co/C3N4-M∶U=7∶3/PMS体系对废水中的苯酚、4-氯苯酚、邻硝基苯酚、2,4-二氯苯酚(质量浓度均为20 mg/L)的去除率均达到90%以上,对质量浓度为20 mg/L的对硝基苯酚的去除率为70%,该催化剂对废水中典型酚类污染物有较好的降解效果。In order to achieve efficient removal of phenolic pollutants from industrial wastewater,Co-doped graphitic carbon nitride was prepared using a composite precursor of thermally polymerized melamine and urea,and O-Co/C3N4-M∶U=7∶3 catalyst was prepared by secondary calcinations,and the optimal reaction parameters was determined through single factor experiment.Using the said catalyst to treat industrial wastewater under the test condition that the PMS concentration was 1.0 mmol/L,the pH value was 7.0,the catalyst dosage was 0.1 g/L,the reaction time was 5.0 min,the removal rates of phenol,4-chlorophenol,o-nitrophenol,and 2,4-dichlorophenol(the mass concentrations were all 20 mg/L)were all above 90%,the removal rate of p-nitrophenol with mass concentration of 20 mg/L was 70%.The catalyst showed good degradation performance on typical phenolic pollutants in wastewater.

关 键 词：持久性污染物 Fenton催化 氮化碳 金属掺杂 复合前驱体 

分 类 号：X703.5[环境科学与工程—环境工程]