摘要
通过磷酸-氨水改性法对稻壳生物炭进行了化学修饰,制备改性生物炭(NPBC),并通过X射线衍射仪、场发射扫描电子显微镜、X射线光谱仪等方法对其物相、形貌及元素进行了表征。以海水中的磺胺嘧啶(SDZ)作为目标污染物,研究了SDZ浓度、NPBC投加量及海水成分(NaCl、MgCl_(2)、Na_(2)SO_(4)、CaCl_(2)、KCl)对生物炭吸附性能的影响,并探究了吸附过程的吸附动力学。结果表明,SDZ的质量浓度为10 mg·L^(-1),NPBC投加为0.4 g·L^(-1)时吸附效果最好。研究表明,海水中的物质对吸附产生了阻碍作用,其中NaCl、MgCl_(2)、GaCl_(2)的影响分别占21.62%、15.72%、14.94%;吸附实验在120 min内达到平衡,最大吸附量为6.71 mg·g^(-1),吸附过程更符合准二级动力学方程。
Modified biochar(NPBC)was prepared with phosphoric acid-ammonia modification method,and its phase,morphology and elements were characterized with X-ray diffraction,field emission scanning electron microscopy and X-ray spectrometer.The effects of SDZ concentration,NPBC dosage and seawater components(NaCl,MgCl_(2),Na_(2)SO_(4),CaCl_(2),KCl)on the adsorption performance of biochar were studied,and the adsorption kinetics of the adsorption process were explored.The results showed that the adsorption effect was best when the concentration of SDZ was 10 mg·L^(-1) and the addition of NPBC was 0.4 g·L^(-1).The substances in seawater hindered adsorption and the effects of NaCl,MgCl_(2) and GaCl_(2) accounted for 21.62%,15.72% and 14.94%,respectively.The adsorption experiment reached equilibrium within 120 min,and the maximum adsorption capacity was 6.71 mg·g^(-1) which was more in line with the quasi-second-order kinetic equation.A new way for the removal of sulfonamide antibiotics from seawater is provided.
作者
胡峥嵘
陈俊
李瑞鹏
王星
宋爱君
王月辉
张志伟
鲁勖琳
沈莉
吉国佳
侯春亮
张晶梅
HU Zhengrong;LI Ruipeng;CHAN Jun;Song Aijun;Wang Yuehui;ZHANG Zhiwei;Lu Xulin;SHEN Li;JI Guojia;HOU Chunliang;ZHANG Jingmei(College of Chemical Engineering,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066600,China)
出处
《河北科技师范学院学报》
CAS
2024年第3期50-58,共9页
Journal of Hebei Normal University of Science & Technology
基金
河北省重点研发计划项目(项目编号:22326625D)
中央引导地方科技发展资金项目(项目编号:236Z7302G)。
关键词
改性生物炭
吸附性能
磺胺嘧啶
吸附动力学
Modified biochar
adsorption properties
sulfadiazine
adsorption kinetics
