CAJ | 학술논문

采用共沉淀法制备Fe_3O_4磁流体,再与5A沸石复合制备一系列不同Fe_3O_4载量的磁性5A沸石,并对其进行X射线衍射、扫描电子显微镜、X射线能谱仪、振动样品磁强计等表征分析,测定了磁分离回收率及铜、锌、镉离子饱和交换吸附量.结果表明,Fe_3O_4微粒主要赋存于5A沸石粒间,磁性5A沸石具有良好的超顺磁性,铜、锌、镉离子的饱和交换吸附量随Fe_3O_4载量增加而小幅降低,但仍与5A沸石相当.Fe_3O_4载量为25%时,其饱和磁化强度、剩余磁化强度分别为13.817、0.351A·m~2/kg,磁分离回收率为98.78%,铜、锌、镉离子的饱和交换吸附量分别为77.1、70.8、135.3mg/g.
채용공침정법제비Fe_3O_4자류체,재여5A비석복합제비일계렬불동Fe_3O_4재량적자성5A비석,병대기진행X사선연사、소묘전자현미경、X사선능보의、진동양품자강계등표정분석,측정료자분리회수솔급동、자、력리자포화교환흡부량.결과표명,Fe_3O_4미립주요부존우5A비석립간,자성5A비석구유량호적초순자성,동、자、력리자적포화교환흡부량수Fe_3O_4재량증가이소폭강저,단잉여5A비석상당.Fe_3O_4재량위25%시,기포화자화강도、잉여자화강도분별위13.817、0.351A·m~2/kg,자분리회수솔위98.78%,동、자、력리자적포화교환흡부량분별위77.1、70.8、135.3mg/g.
Magnetic influence of Fe_3O_4 was prepared by coprecipitation method,and then prepared magnetic 5A zeolite with different loadings of Fe_3O_4,the production were characterized by X ray diffraction,scanning electron microscopy,energy dispersive spectrometer and vibration sample magnetometer,the magnetic recovery rate and saturation exchange-adsorption capacity to copper,zinc,cadmium ion were also measured.The results show that Fe_3O_4 particles mainly occurrence between the grains of 5A zeolite,magnetic 5A zeolite show well characteristic of superparamagnetism,and the saturation exchange-adsorption capacity to copper,zinc and cadmium ion of magnetic 5A zeolite are approximate with 5A zeolite,but decrease slightly along with the loadings of Fe_3O_4 increasing.When the loadings of Fe_3O_4 is 25%,the saturation magnetic induction and remanence magnetization of magnetic 5A zeolite is 13.817,0.351A·m~2/kg,magnetic recovery rate is 98.78%,saturation ion exchange-adsorption capacity to copper,zinc,cadmium is 77.1,70.8,135.3mg/g,respectively.