磁性MnFe2O4@Al2O3对废水中铜的吸附行为研究  

Adsorption performance of Cu from wastewater using magnetic MnFe2O4@Al2O3

作　　者：李静[1,2] 何宗文 鲍东杰 刘占孟[2] Li Jing;He Zongwen;Bao Dongjie;Liu Zhanmeng(Xingtai Polytechnic College,Xingtai 054035,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;Fengcheng Water Conservancy Bureau,Fengcheng 331100,China)

机构地区：[1]邢台职业技术学院,河北邢台054035 [2]华东交通大学土木建筑学院,江西南昌330013 [3]丰城市水利局,江西丰城331100

出　　处：《工业水处理》2020年第7期56-60,共5页Industrial Water Treatment

基　　金：国家自然科学基金项目(51468016);河北省“三三三”人才培养工程资助经费项目资助;河北省科技支撑计划项目(15273628);河北省高等学校科学研究计划青年基金项目(QN20131178)。

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。The core/shell nano-particle adsorbent of MnFe2O4@Al2O3 was prepared and introduced in wastewater con-taining copper ions adsorption experiment.The experimental results showed that the core/shell nano-particle adsor-bent 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.

关 键 词：重金属 吸附 磁性纳米复合材料 MnFe2O4@Al2O3 

分 类 号：X703[环境科学与工程—环境工程]