Abstract A novel magnetic Fe-Y binary oxide was prepared by precipitation method and served as an adsorbent to remove arsenic in pollutant. The FTIR, FESEM, XRD and XPS were used to characterize the adsorbent. The adsorption properties of the magnetic Fe-Y binary oxide were tested by batch experiment. The adsorption process complies with the Langmuir model. It indicates that the adsorption process is a single layer adsorption on the surface of the magnetic Fe-Y binary oxide. At the same time, the adsorption process is also very good in accordance with the pseudo second-order kinetic model, indicating that the process is chemiadsorption. When pH = 5, the maximum adsorption capacity was 303 mg/g. The increase of temperature promotes the As(V) adsorption on the magnetic Fe-Y binary oxide. The magnetic Fe-Y binary oxide has high selectivity and regenerative ability at least 5 cycles. The adsorption mechanism of As(V) on the magnetic Fe-Y binary oxide is chelation and ion exchange.

中文翻译：

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磁性Fe-Y二元氧化物选择性去除水溶液中高浓度砷酸盐

摘要 采用沉淀法制备了一种新型磁性Fe-Y二元氧化物，作为吸附剂去除污染物中的砷。FTIR、FESEM、XRD和XPS用于表征吸附剂。通过批量实验测试了磁性Fe-Y二元氧化物的吸附性能。吸附过程符合朗缪尔模型。表明吸附过程为磁性Fe-Y二元氧化物表面的单层吸附。同时，吸附过程也很好，符合拟二级动力学模型，说明该过程为化学吸附。当 pH = 5 时，最大吸附量为 303 mg/g。温度的升高促进了磁性 Fe-Y 二元氧化物上的 As(V) 吸附。磁性Fe-Y二元氧化物具有高选择性和至少5次循环的再生能力。As(V)在磁性Fe-Y二元氧化物上的吸附机理是螯合和离子交换。