硅藻土-沸石复合吸附剂对水中磷的吸附性能研究  

Performance of Diatomite-zeolite Complex Absorbent for Phosphorus Adsorption from Aqueous Solution

作　　者：张银凤[1] 段宁[1] 吴克明[1] 高耀文[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,武汉430081

出　　处：《硅酸盐通报》2013年第7期1420-1426,共7页Bulletin of the Chinese Ceramic Society

基　　金：湖北省教育厅中青年人才项目(Q20121106)

摘　　要：本文利用硅藻土和沸石为主要原料制备硅藻土-沸石复合吸附剂,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磷的吸附动力学行为和吸附等温线。结果表明,硅藻土与沸石在复合过程中基本上完全参与了化学反应,可以增加复合吸附剂的活性;复合吸附剂对磷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Langmuir方程拟合较好。The complex absorbent was obtained by using diatomite and zeolite as the main raw materials,and it was characterized by FTIR,XRD and SEM,the efficient of phosphate removal from simulative wastewater was put forward in this paper.In the adsorption progress of phosphate,the adsorption kinetic model and Isothermal adsorption lines was explored.The results indicated that the diatomite and zeolite were nearly reacted totally,and they improved the creativity of the absorbent.The pseudo-second-order equation is found to be fit to the adsorption kinetics better,and the adsorption isotherms qualified Langmuir equation.

关 键 词：硅藻土 复合吸附剂 除磷 吸附动力学 

分 类 号：TQ028[化学工程]