钴氮共掺杂废菌棒生物炭活化PMS去除水中加替沙星  

Removal of gatifloxacin from water by cobalt-nitrogen co-doped mushroom stick biological carbon activated PMS

作　　者：杨群 李红艳[1,2] 张峰 毛立波[3] 崔佳丽 董颖虹[4] 郭紫瑞 YANG Qun;LI Hongyan;ZHANG Feng;MAO Libo;CUI Jiali;DONG Yinghong;GUO Zirui(College of Environmental Science and Engineering,Taiyuan University of Technology,Jinzhong 030600,Shanxi,China;Linxian Fenglin Modern Agricultural Development Limited Company,Lyuliang 033200,Shanxi,China;Science and Technology Management Department of Shanxi Dadi Environmental Investment Holdings Co.,Limited,Taiyuan 030032,Shanxi,China;Department of Architecture and Environmental Engineering,Taiyuan University,Taiyuan 030032,Shanxi,China)

机构地区：[1]太原理工大学环境科学与工程学院,山西晋中030600 [2]临县丰林现代农业发展有限公司,山西吕梁033200 [3]山西大地环境投资控股有限公司科创管理部,山西太原030032 [4]太原学院建筑与环境工程系,山西太原030032

出　　处：《化工进展》2025年第2期1088-1099,共12页Chemical Industry and Engineering Progress

基　　金：吕梁市引进高层次科技人才重点研发项目(2021RC-1-22);山西省自然科学研究面上项目(202203021221060);山西省研究生创新项目(2023SJ085)。

摘　　要：以农业废弃物废菌棒为原料,采用浸渍-煅烧法制备高性能的钴氮共掺杂废菌棒生物炭(Co-N@MSBC),对其进行扫描电子显微镜(SEM)、比表面积(BET)、红外光谱(FTIR)、X射线光电子能谱(XPS)表征分析,并用Co-N@MSBC活化过一硫酸盐(PMS)去除加替沙星(GAT)。结果表明,与PMS、MSBC、MSBC/PMS、CoN@MSBC相比,最佳条件下,Co-N@MSBC/PMS体系在60min内对GAT的去除率高达96.5%,且在宽pH(3~11)范围均保持90%以上的GAT去除率;Cl^(-)、NO_(3)^(-)和HCO_(3)^(-)对GAT去除有一定抑制作用,H_(2)PO_(4)^(-)有轻微促进作用。Co-N@MSBC经过3次循环利用后对用自来水和超纯水配置的GAT去除率均高于85%,表明其具有良好的稳定性。淬灭实验表明,硫酸根自由基(SO_(4)^(·-))、羟基自由基(·OH)和单线态氧(^(1)O_(2))共同参与降解。体系存在亚稳态络合物介导的非自由基途径。电化学阻抗谱(EIS)和线性扫描伏安法(LSV)研究表明,GAT去除过程中存在三元体系间的直接电子转移,即PMS、Co-N@MSBC和GAT分别充当电子受体、电子桥和电子供体,且掺杂的Co、N促进PMS与Co-N@MSBC之间的电子转移。High performance cobalt-nitrogen co-doped waste microbiochar(Co-N@MSBC)was prepared from agricultural waste mushroom stick by impregnation-calcination method.The biochar was characterized by scanning electron microscopy(SEM),specific surface area(BET),Fourier transform infrared spectroscopy(FTIR),and X-ray photoelectron spectroscopy(XPS).Gatifloxacin(GAT)was removed by Co-N@MSBC activated permonosulfate(PMS).The experimental results showed that,compared with PMS,MSBC,MSBC/PMS,Co-N@MSBC,the removal rate of GAT in Co-N@MSBC/PMS system was up to 96.5%within 60min under the best conditions,and remained above 90%removal efficiency at a wide pH range(3-11).Cl^(-),NO_(3)^(-)and HCO_(3)^(-)had a certain inhibitory effect on the removal of GAT,while H_(2)PO_(4)^(-)had a slight promotion effect.After three cycles of recycling,the GAT removal rate of Co-N@MSBC for tap water and ultra-pure water was still higher than 85%,indicating that it has good stability.The quenching experiments showed that sulfate radicals(SO_(4)^(·-)),·hydroxyl radicals(·OH),and singlet oxygen(^(1)O_(2))were involved in the degradation.There was a metastable complex mediated non-free radical pathway.Electrochemical impedance spectroscopy(EIS)and linear sweep voltammetry(LSV)experiments showed that there was direct electron transfer between ternary systems during GAT removal,which meant PMS,Co-N@MSBC and GAT act as electron acceptor,electron bridge and electron donor,respectively,and doped Co and N promote electron transfer between PMS and Co-N@MSBC.

关 键 词：钴氮共掺杂废菌棒生物炭 高级氧化 加替沙星 过一硫酸盐 活化 

分 类 号：X703[环境科学与工程—环境工程]