【摘要】 采用共沉淀法,以苯乙烯型强碱性离子交换树脂为基体,成功制备了磁性离子交换树脂。分别采用扫描电子显微镜（SEM）、X射线衍射（XRD）和振动样品磁强计（VSM）对磁性离子交换树脂的表观形貌、磁性组分和磁性能进行了表征。研究了吸附时间、温度、p H和竞争离子4个因素对磁性离子交换树脂吸附废水中Cl^–性能的影响。结果表明:磁性离子交换树脂表面粗糙,磁性组分为Fe₃O₄,比饱和磁化强度为2.23emu/g,具有超顺磁性。吸附时间、温度和p H对磁性离子交换树脂吸附Cl^–的影响较大,当吸附时间为3h、温度为30℃、p H=3时,磁性离子交换树脂的吸附量最大,达到140.43mg/g;当废水中含有SO₄^2–或NO₃^–等竞争离子时,磁性离子交换树脂的抗干扰能力增强,对Cl^–的吸附选择性也有所提高。更多还原

【Abstract】 Magnetic ion exchange resin（MIER）was successfully prepared using styrene type strongly alkaline ion exchange resin as matrix and with the method of co-precipitation.The surface morphology,magnetic component and magnetic property of MIER were characterized by scanning electron microscopy（SEM）,X-ray diffraction（XRD）and vibrating sample magnetometer（VSM）.The effects of adsorption time,temperature,p H and competitive ions on the adsorption performance of MIER to Cl^–in waste water were studied.The results showed that the MIER’s surface was rough,the magnetic component was Fe₃O₄,and the saturation magnetization was about 2.23emu/g.Adsorption time,temperature and p H all had great influence on the adsorption performance.When the adsorption time was 3h,temperature was 30℃,and p H=3,the saturated adsorption capacity of MIER could reach140.43mg/g.The anti-interference ability and the adsorption selectivity to Cl^–were enhanced in the wastewater containing competing ions such as SO₄^2–or NO₃^–.更多还原