【摘要】 制备核壳磁性吸附剂MnFe₂O₄@Al₂O₃用于含铜废水的吸附实验研究。结果表明,MnFe₂O₄@Al₂O₃可有效去除水中的铜离子,在MnFe₂O₄@Al₂O₃投加质量浓度2.0 g/L、Cu²⁺质量浓度20 mg/L、pH为6.0、吸附时间180 min的条件下,Cu²⁺去除率达97%。MnFe₂O₄@Al₂O₃对Cu²⁺的吸附过程符合伪二级动力学方程,为多层化学吸附。VSM分析表明MnFe₂O₄@Al₂O₃具备超顺磁性的优势。更多还原

【Abstract】 The core/shell nano-particle adsorbent of MnFe₂O₄@Al₂O₃ was prepared and introduced in wastewater containing copper ions adsorption experiment. The experimental results showed that the core/shell nano-particle adsorbent of MnFe₂O₄@Al₂O₃ could effectively remove copper ions from wastewater. Under the conditions of 20 mg/L Cu²⁺concentration,pH 6.0,2.0 g/L adsorbent dosage,and 180 min adsorption time,the removal rate of Cu²⁺was up to 97%.The dynamic process of Cu²⁺adsorption followed the pseudo-secondary order model, which was multi-layer chemical adsorption. VSM analysis showed that the MnFe₂O₄@Al₂O₃ had the advantage of superparamagnetism.更多还原