改性累托石的制备及其对水中磷的吸附研究  

Studies on the preparation of modified rectorite and its adsorbing performance for phosphorus in water

作　　者：徐贵钰[1] 殷海青[1] 扈金莲 孙全文[1] XU Gui-yu;YIN Hai-qing;HU Jin-lian;SUN Quan-wen(Qinghai University for Nationalities,Xining 810007,China)

机构地区：[1]青海民族大学,青海西宁810007

出　　处：《化学研究与应用》2016年第7期1025-1029,共5页Chemical Research and Application

基　　金：国家自然基金项目(批准号:21361021)资助

摘　　要：利用有机改性法对累托石(REC)进行改性,制得季铵盐改性累托石(REC-1631),再对碱性条件下的REC-1631用FeCl_3·6H_2O和FeSO_4·7H_2O进行磁性处理,制得磁性累托石(Fe_3O_4/REC-1631),并对水中磷的吸附性能进行研究。结果表明,REC对废水中磷的最大吸附量由改性前的61.60 mg/g提高到改性后117.00mg/g,吸附效果明显增大,同时还具有稳定的磁性,便于回收再利用,其吸附过程符合准二级动力学方程和Langmuir等温吸附曲线。Quaternary ammonium salt modified rectorite(REC-1631) was obtained through rectorite using the method of organicmodification,and then to make it magnetic processing with FeCl3·6H2 O and FeSO4·7 H2 O under alkaline conditions,further studythe adsorption of phosphorus in water. The results show that the maximum adsorption capacities of REC for PO3-4 were only 61. 60mg/ g,while the modified REC adsorption of phosphorus increased significantly and reached 117. 00 mg/ g. By this way,the adsorptioneffect of adsorbent was increased obviously,and also had a stable magnetic in order to recycle easily. The adsorption processwas in accord with pseudo-second order kinetics equation and Langmuir sorption isotherm equation.

关 键 词：累托石 改性 吸附 磁性 

分 类 号：O647.3[理学—物理化学]