磁性碳化秸秆吸附剂的制备及对Cu^(2+)的吸附性能研究

Preparation of magnetic straw adsorbent and the adsorption properties of copper ions

针对水体中重金属铜离子的污染,选用玉米秸秆进行磁性改性操作,用紫外光谱法测定了不同外界条件下磁性秸秆的最佳吸附量。通过结果分析发现磁改性后的玉米秸秆对铜离子吸附有着明显的提高,对低浓度的铜溶液也能产生良好的吸附效果。通过拟合得出磁性秸秆材料对铜离子的吸附过程符合Langmuir吸附模型和二级动力学模型。

Burning of corn straw cause heavy pollution,in this work,we magntic modifed the corn straw as the copper ion adsorbent,and study the adsorption mechanism by ultraviolet spectrometry in different condition.The results showed that the removal rate of modified corn straw was higher than the unmodified,and the adsorption performance is good at low concentraition. The adsorption processthe confirms to the Langmuir model and the pseudo-second-order model.