铁铜负载生物炭催化H_(2)O_(2)降解药物类新污染物研究  

H_(2)O_(2)-Catalyzed Degradation of Emerging Pharmaceutical Contaminants by Fe/Cu-Loaded Biochar

作　　者：张克峰[1] 孙群 马春晓 王珊[1,2] 井绪丽[1] 陈仪霖 ZHANG Kefeng;SUN Qun;MA Chunxiao;WANG Shan;JING Xuli;CHEN Yilin(School of Municipal and Environmental Engineering,Shandong Jianzhu University,Jinan 250101,China;State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;Pingdu Transportation Bureau,Pingdu,Shandong 266799,China)

机构地区：[1]山东建筑大学市政与环境工程学院,山东济南250101 [2]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085 [3]平度市交通运输局,山东平度266799

出　　处：《水处理技术》2024年第10期51-57,69,共8页Technology of Water Treatment

基　　金：国家重点研发计划(2022YFC3203705);山东建筑大学博士科研基金项目(X20037Z);山东省住房和城乡建设厅研究开发项目(2020kykf04-011)。

摘　　要：以花生壳为原材料,高铁酸钾(K_(2)FeO_(4))、Cu(NO_(3))_(2)为活化剂和金属源通过一步热解法,制备铁铜负载石墨化生物炭催化剂(FCBC)构建FCBC-H_(2)O_(2)非均相Fenton体系,考察其对盐酸四环素(TC)和对乙酰氨基酚(ACE)的降解效果及机理。结果表明,在最佳反应条件pH=3、FCBC投加量为0.7 g/L、H_(2)O_(2)浓度为10 mmol/L条件下,可有效降解98%的TC和97%的ACE。在pH=2~6范围内,FCBC均具有较高的催化性能,反应体系主要受H_(2)O_(2)投加量影响。通过SEM、XRD、FTIR、XPS、BET等方法对FCBC催化剂的结构进行表征,FCBC石墨化程度较高,拥有丰富的孔结构和较大的比表面积(685.11 m^(2)/g),生物炭表面铁元素主要以Fe0和Fe_(3)O_(4)形态,铜元素主要以Cu^(0)形态存在。Cu^(0)不仅增加生物炭表面吸附和催化活性位点,还可加速Fe^(2+)/Fe^(3+)的循环提高反应催化效率。FCBC催化材料稳定具有良好的重复利用率,在实际水体模拟试验中表现出良好的催化性能。研究成果可为非均相芬顿降解药物类新污染物的催化材料选择和应用提供指导和支持。The Fe/Cu loaded graphitized biochar catalyst(FCBC)was prepared by one-step pyrolysis method using peanut shells as raw materials,potassium ferric ferrate(K_(2)FeO_(4)),Cu(NO_(3))_(2)as the activator and metal source to construct the FCBC-H_(2)O_(2)non-homogeneous Fenton system.The degradation effect and mechanism of tetracycline hydrochloride(TC)and acetaminophen(ACE)were investigated.The results showed that the optimal reaction conditions of pH=3,FCBC dosage=0.7 g/L and H_(2)O_(2)=10 mmol/L could effectively degrade 98%of TC and 97%of ACE.The catalytic performance of FCBC was high in the pH range of 2~6,and the reaction system was mainly affected by the dosage of H_(2)O_(2).The structure of FCBC catalysts was characterized by SEM,XRD,FTIR,XPS,BET,etc.FCBC was highly graphitized with a rich pore structure and a large specific surface area of 685.11 m^(2)/g.The iron elements on the surface of the biochar were mainly in the form of Fe0 and Fe_(3)O_(4),and the copper elements were mainly in the form of Cu^(0).The Cu^(0) not only increases the adsorption and catalytic sites on the surface of the biochar but also accelerates the cycling of Fe^(2+)/Fe^(3+)to improve the reaction rate and catalytic efficiency.The FCBC catalytic material was stable and had good reusability.In the actual water catalytic system,the FCBC still showed good catalytic performance,and the research results can provide guidance and support for the selection and application of catalytic materials for the non-homogeneous Fenton degradation of pharmaceutical new pollutants.

关 键 词：生物炭 非均相FENTON 铁铜双金属负载 盐酸四环素 对乙酰氨基酚 

分 类 号：X703.1[环境科学与工程—环境工程]