摘要
采用新型绿色的复合活化剂氯化铁和氯化铜一步炭化法制备石榴皮多孔炭材料,并对其诺氟沙星吸附性能进行研究。以碘吸附值为评价指标,对浸渍比(质量比)和活化温度进行优化,结果表明:在复合活化剂与石榴皮粉浸渍比2∶1、FeCl_(3)与CuCl_(2)质量比2∶1、活化温度600℃条件下,石榴皮多孔炭材料(SPPAC3-600)具有最大吸附量。通过场发射扫描电子显微镜(FESEM)和比表面积测量仪等对材料进行表征分析,材料的比表面积为889.86 m^(2)/g。应用吸附动力学模型、吸附等温线模型以及吸附热力学模型研究SPPAC3-600对诺氟沙星的吸附性能,结果表明:Langmuir模型能更好地描述SPPAC3-600对诺氟沙星的吸附过程,最大吸附量为52.87 mg/g;吸附数据可用准二级动力学方程进行拟合,其决定系数R^(2)均大于0.9900;热力学结果ΔH>0,说明吸附过程为吸热过程。
In our present study,pomegranate peel porous carbon material was successfully prepared by one-step carbonization with the use of the new and green composite activators FeCl_(3) and CuCl_(2),and the adsorption of norfloxacin was studied.Taking iodine adsorption as the evaluation index,the impregnation ratio and activation temperature were optimized.The results showed that when the impregnation ratio of composite activator and pomegranate peel powder was 2∶1,and FeCl_(3)∶CuCl_(2) was 2∶1,with an activation temperature of 600℃,carbon material(SPPAC3-600)had a best adsorption.The materials were characterized and analyzed by field emission scanning electron microscope(FESEM)and specific surface area measuring instrument,and the specific surface area of the material was 889.86 m^(2)/g.The adsorption kinetics model,adsorption isotherm model and adsorption thermodynamic model were all used to study the adsorption performance of SPPAC3-600 material for norfloxacin.The results showed that the Langmuir model could better describe the adsorption process of norfloxacin,and the maximum adsorption capacity was 52.87 mg/g;TS adsorption kinetics could be fitted by a pseudo-second-order kinetic equation,and the coefficient of determination R^(2) were all greater than 0.9900;the thermodynamic results ΔH>0 indicated that the adsorption process was an endothermic process.
作者
牛琳
赵云霞
陈雷
赵雷兴
刘冰
NIU Lin;ZHAO Yunxia;CHEN Lei;ZHAO Leixing;LIU Bing(State Key Laboratory of Food Nutrition and Safety,Tianjin Key Laboratory of Food Quality and Health,College of Food Science and Engineering,Tianjin University of Science&Technology,Tianjin 300457,China)
出处
《天津科技大学学报》
CAS
2023年第4期16-23,共8页
Journal of Tianjin University of Science & Technology
基金
国家重点研发计划项目(2018YFC1604000)。
关键词
石榴皮
多孔炭
吸附性能
诺氟沙星
pomegranate peel
porous carbon
adsorption performance
norfloxacin
作者简介
牛琳(1997-),女,天津人,硕士研究生;通信作者:刘冰,教授,ice6377@tust.edu.cn。
