Acta Scientiarum Naturalium Universitatis Pekinensis

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Removal of Cadmium and Copper from Aqueous Solution by the Adsorption Resin Coated Manganese Oxide

LU Xuemei1, XIONG Ying1,2, ZHANG Guangzhi3, NI Jinren1   

  1. 1. Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871; 2. School of Environment and Energy, Shenzhen Graduate School, Peking University, Shenzhen Key Laboratory for Heavy Metal Pollution Control and Reutilization, Shenzhen 518055; 3. Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020;
  • Received:2012-02-26 Online:2012-11-20 Published:2012-11-20



  1. 1. 北京大学环境工程系, 水沙科学教育部重点实验室, 北京 100871; 2. 北京大学深圳研究生院环境与能源学院, 深圳市重金属污染控制与资源化重点实验室, 深圳 518005; 3. 浙江省水利河口研究院, 杭州 310020;

Abstract: A new hybrid material (Mn-SD300) was prepared by coating manganese oxide onto the adsorption resin SD300, which adopted the method of in-suit potassium permanganate oxidation and reduction. The adsorption ability of Mn-SD300 for Cd2+ and Cu2+ was studied. The results of TEM, XRD and XPS demonstrated that the form of manganese oxide loaded on the resin was MnO2. A good adsorption property of Cd2+ and Cu2+ onto Mn-SD300 was indicated by the batch experiments. The adsorption behavior of Cd2+ and Cu2+ on Mn-SD300 was well described by pseudo-first-order kinetic model and Langmuir isotherm model (R2>0.99), and the maximum adsorption capacity of Mn-SD300 towards Cd2+ and Cu2+, were up to 76.92 mg/g and 142.86 mg/g respectively at 303 K. Compared to the conventional cation exchange resin D001, Mn-SD300 had a better adsorption selectivity to Cd2+ and Cu2+, when Ca2+, Mg2+ and Na+ coexisted at high concentration.

Key words: adsorption resin, manganese oxide, cadmium, copper, adsorption

摘要: 以大孔吸附树脂SD300为载体, 采用原位高锰酸钾氧化还原法将锰氧化物负载其上, 制备了新型锰氧化物?吸附树脂复合材料Mn-SD300, 并对其吸附水中Cd2+和Cu2+的性能进行了研究。TEM, XRD以及XPS的分析结果表明, 负载的锰氧化物以MnO2的形态存在。静态吸附实验结果表明Mn-SD300对Cd2+和Cu2+具有良好的吸附性能。吸附行为均符合准一级动力学模型(R2>0.99)和Langmuir吸附等温线模型(R2>0.99), 温度为303 K时, Mn-SD300对Cd2+和Cu2+的饱和吸附容量可分别达到76.92 mg/g和142.86 mg/g。在高浓度竞争离子Ca2+, Mg2+和Na+共存的情况下, Mn-SD300对Cd2+和Cu2+的吸附选择性要强于传统阳离子交换树脂D001。

关键词: 吸附树脂, 锰氧化物, 镉, 铜, 吸附

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