摘要
通过硅藻土与沸石的结合,制备出复合吸附剂用于吸附氨氮。采用傅里叶变换红外光谱法(FTIR)、X射线衍射(XRD)、SEM对其进行表征,研究了静态吸附过程中的复合吸附剂对溶液中氮的吸附动力学行为和吸附等温线。结果表明,复合吸附剂的吸附性能较好;复合吸附剂对氨氮的吸附动力学特征更符合准二级反应动力学方程;等温吸附特征与Freundlich方程拟合较好。
The diatomite-zeolite composite adsorbent was synthesized and applied to adsorb ammonia nitrogen. FTIR, XRD and SEM were employed for the characterization of the mierostrueture, elemental composition and the adsorptive properties. Also, the adsorption kinetic model and isothermal adsorption lines was explored during the adsorption progress. The results indicated that adsorption performance of the compound adsorbent was good. The pseudo-second-order equation and Freundlich equation areis found to be fit to the adsorption kinetics and the adsorption isotherms respectively.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第12期2465-2470,共6页
Bulletin of the Chinese Ceramic Society
基金
湖北省教育厅中青年人才项目(Q20121106)
关键词
硅藻土
复合吸附剂
氨氮
吸附动力学
diatomite
complex absorbent
ammonia nitrogen
adsorption kinetic
