三种废渣吸附剂对稀土氨氮废水的吸附动力学研究  

Study on the Adsorption Kinetics of Three Types of Waste Residue Adsorbents for Rare Earth Ammonia Nitrogen Wastewater

作　　者：杜明展 刘进峰[2] 陈莉荣[3] DU Mingzhan;LIU Jinfeng;CHEN Lirong(Xingtang County Shitongxiang People’s Government,Shijiazhuang,050000 China;School of Mechanical and Electrical Engineering,Shijiazhuang University,Shijiazhuang 050035,China;School of Energy and Environment,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]行唐县市同乡人民政府,河北石家庄050000 [2]石家庄学院机电学院,河北石家庄050035 [3]内蒙古科技大学能源与环境学院,内蒙古包头014010

出　　处：《化工管理》2024年第16期70-73,共4页Chemical Engineering Management

摘　　要：以改性的粉煤灰、煤矸石、水淬渣作为材料,研究了三种废渣稀土氨氮废水中氨氮的吸附性能及其吸附动力学行为,讨论了吸附平衡时间、反应级数、吸附速率控制步骤,并将三种废渣的吸附性能进行比较。实验结果表明:粉煤灰与水淬渣较先达到吸附平衡,煤矸石与准二级动力学拟合直线的相关性最好为0.997 8,化学反应是改性粉煤灰、改性水淬渣吸附氨氮的主要控制步骤,液膜扩散、颗粒扩散是改性煤矸石吸附氨氮的主要控制步骤。With modif ied fly ash,coal gangue and water granulated slag as absorbent,the ability and kinetics of adsorption of Ammonia-Nitrogen in rare earth waster water by such 3 waste residue are studied,involving discussions on adsorption equilibrium time,reaction orders,adsorption rate control steps and effective diffusion coeff icient,and the adsorption ability of the 3 waste residue are compared.The results showed:fly ash and water granulated slag reach adsorption equilibrium faster;coal gangue results has best correlation 0.9978 with quasi secondary kinetics f itting straight line;chemical reaction is the control step for adsorption of fly ash and water granulated slag,liquid f ilm diffusion and partical diffusion are control steps for coal gangue adsorption.

关 键 词：废渣 吸附剂 稀土氨氮废水 动力学 

分 类 号：X703[环境科学与工程—环境工程]