功能化玉米芯生物炭对水中磺胺甲恶唑的去除  

Removal of Sulfamethoxazole from Water by Functionalized Corncob Biochar

作　　者：陈建 欧阳金波 赖伟鑫 邢晓红 刘峙嵘[1] 周利民[1] CHEN Jian;OUYANG Jin-bo;LAI Wei-xin;XING Xiao-hong;LIU Zhi-rong;ZHOU Li-min(School of Chemistry,Biology and Materials Science,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学化学生物与材料科学学院,江西南昌330013

出　　处：《东华理工大学学报（自然科学版）》2022年第1期87-95,共9页Journal of East China University of Technology(Natural Science)

基　　金：国家自然科学基金项目(22068002);江西省自然科学基金项目(20202BABL203020)。

摘　　要：采用玉米芯制备的生物炭对磺胺甲恶唑(SMZ)的吸附能力进行了研究。玉米芯经过预处理、活化、裂解及功能化处理,成功制备了功能化生物炭材料。采用SEM、FTIR、XRD技术对生物炭的形貌和理化性质进行了表征。吸附实验表明,利用磷酸活化、硝酸功能化的生物炭(PNBC)吸附效果最佳,其最大吸附量达162.08 mg/g,动力学实验证实该吸附过程更符合准二级吸附动力学模型。另外,讨论了溶液pH、离子强度对吸附过程及PNBC循环吸附性能的影响。最后,分析了PNBC对SMZ吸附的可能机理。The adsorption of sulfamethoxazole(SMZ)on biochar prepared from corncob was studied.Functional biochar materials were successfully prepared by pretreatment,activation,pyrolysis and functionalization of corncob.The morphology and physicochemical properties of biochar were characterized by SEM,FTIR and XRD.The adsorption experiment shows that phosphoric acid activated and nitric acid functionalized biochar(PNBC)had the best adsorption capacity,with a maximum adsorption capacity of 162.08 mg/g,and the adsorption process was more consistent with the pseudo-second-order adsorption kinetic model.In addition,the effects of pH and ionic strength on the adsorption process and the cyclic adsorption of PNBC were discussed.Finally,the potential mechanism of SMZ adsorbed by PNBC was analyzed.

关 键 词：玉米芯 生物炭 磺胺甲恶唑 功能化 吸附 

分 类 号：X703[环境科学与工程—环境工程]