中华医学超声杂志

应用化学 ›› 2009, Vol. 26 ›› Issue (12): 1450-1455.

• 研究论文 • 上一篇    下一篇

氨基酸螯合吸附树脂对Cu2+的吸附行为

孟冠华*,欧承慧,陶冬民,刘宝河   

  1. (安徽工业大学建筑工程学院 马鞍山 243002)
  • 收稿日期:2008-12-04 修回日期:2009-04-20 出版日期:2009-12-10 发布日期:2009-12-10
  • 通讯作者: 孟冠华，女，博士，副教授; E-mail:mengguanhua@163.com; 研究方向：废水处理及资源化
  • 基金资助:
    安徽省教育厅自然科学研究项目KJ2007B167

Study on Adsorption of Copper Ions onto Amine Acid Chelated Adsorption Resin

 MENG Guan-Hua*, OU Cheng-Hui, TAO Dong-Min, LIU Bao-He   

  1. (School of Civil Engineering & Architecture,Anhui University of Technology,Ma′anshan 243002)
  • Received:2008-12-04 Revised:2009-04-20 Published:2009-12-10 Online:2009-12-10

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摘要：

合成了一种Ｌ-酪氨酸修饰的螯合吸附树脂（ＡＪＳ-０２），并与超高交联树脂ＮＤＡ-１５０作对比，研究了其
对Ｃｕ２＋的吸附和脱附行为。静态实验结果表明，在研究的浓度范围内，吸附平衡数据符合Ｌａｎｇｍｕｉｒ等温吸附方程。Ｃｕ２＋在ＡＪＳ-０２上的吸附量大于其在ＮＤＡ-１５０上的吸附量。Ｃｕ２＋在２种树脂上的吸附过程为物理和化学作用的共同结果。吸附动力学符合液膜扩散方程，液膜扩散为吸附速率的主要控制步骤。动态吸附-脱附实验表明，动态穿透吸附量和总吸附量分别为４.０５×１０－３和６.４４×１０－３ ｍｏｌ/Ｌ，使用5%HCl进行脱附，脱附率达到90％以上。

关键词: ＡＪＳ-０２树脂，ＮＤＡ-１５０树脂，Ｃｕ２＋，吸附，脱附

Abstract:

The synthesis of AJS-02 modified by L-tyrosine acid and a comparison of adsorption-desorption performance toward Cu2+ between NDA-150 and AJS-02 were investigated. The results showed that equilibrium adsorption data fitted to Langmuir isotherms and the adsorption capacity is higher on AJS-02 thanon NDA-150 in our study, which may be attributed to the polar groups on the network of AJS-02. The adsorption of Cu2+ on AJS-02 is a procedure of the coexistence of physisorption and chemisorption. Kinetic analysis shows that the adsorption rate was mainly governed by film diffusion. Dynamic adsorption and desorption studies for Cu2+on AJS-02 show that the breakthrough adsorption capacity and the total adsorption capacity are 4.05×10-3 and 6.44×10-3 mmol per milliliter resin, respectively. Above 90% regeneration efficiency for the adsorbent was achieved by the desorption of 5% hydrochloric acid.

 

Key words: ＡＪＳ-０２，ＮＤＡ-１５０ｒｅｓｉｎ，Ｃｕ２＋，ａｄｓｏｒｐｔｉｏｎ，ｄｅｓｏｒｐｔｉｏ

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