小麦秸秆生物炭吸附诺氟沙星特性  

Adsorption property of norfloxacin on wheat stalk biochar

作　　者：谭珍珍[1,2] 张学杨 方茹[1] 骆俊鹏 安天一 杨正武 张茹 贺斌 Tan Zhenzhen;Zhang Xueyang;Fang Ru;Luo Junpeng;An Tianyi;Yang Zhengwu;Zhang Ru;He Bin(College of Environmental Engineering,Xuzhou University of Technology,Xuzhou 221018,China;Jiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse,Xuzhou 221018,China;School of Municipal and Environmental Engineering,Shandong Jianzhu University,Ji’nan 250101,China;Environmental Monitoring Station of Shizhong District Zaozhuang,Zaozhuang 277000,China)

机构地区：[1]徐州工程学院环境工程学院,江苏徐州221018 [2]江苏省工业污染控制与资源化重点实验室,江苏徐州221018 [3]山东建筑大学市政与环境工程学院,山东济南250101 [4]山东省枣庄市市中区环保局环境监测站,山东枣庄277000

出　　处：《工业水处理》2020年第1期24-28,共5页Industrial Water Treatment

基　　金：国家自然科学基金项目（41807368）;江苏省高等学校自然科学研究重大项目（18KJA610003）;徐州市科技计划项目（KC18150）;徐州工程学院培育项目（XKY2017121）

摘　　要：采用孔径与比表面积分析仪、SEM、FTIR及Boehm滴定对小麦秸秆生物炭(XM300、XM450、XM600)进行表征,考察了生物炭对诺氟沙星(NOR)的吸附机制。结果表明,随着热解温度的升高,生物炭比表面积与孔容积增大,孔径变小,表面羧基、内酯基与酚羟基等酸性官能团数量减少。伪二级动力学方程和Langmuir等温模型更适合描述3种生物炭对NOR的吸附,颗粒内扩散方程拟合发现生物炭对NOR的吸附包括快速外扩散与缓慢内扩散;XM300对NOR的吸附容量最大(40.30 mg/g),得益于低热解温度生物炭中存在大量非碳化有机质的分配作用。The physicochemical properties of wheat stalk biochars(XM300,XM450,XM600)were characterized by pore size and specific surface area analyzer,SEM,FTIR and Boehm titration,respectively.Then the adsorption mech-anism of norfloxacin(NOR)on biochars were investigated.The results showed that the specific surface area and pore volume of biochars increased with increasing the pyrolysis temperature,while the pore size and the amounts of acidic groups such as carboxylic,lactone and phenolic hydroxyl groups decreased.The pseudo-second-order kinetics equa-tion and Langmuir model were more suitable to describe the adsorption of NOR on biochars.The fitting results of In-tra-particle diffusion model showed that there were two separate stages in sorption process:fast external diffusion and slow inter-particle diffusion.The XM300 had the highest adsorption capacity of 40.30 mg/g,which was mainly attri-buted to that the non-carbonized organic matter in the low pyrolysis biochar can capture norfloxacin in the manner of partition.

关 键 词：生物炭 诺氟沙星 小麦秸秆 吸附 分配作用 

分 类 号：X703.1[环境科学与工程—环境工程]