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聚丙稀酰胺高吸附树脂与重金属离子的相互作用

王晓佳 王百田 李德宁 曹远博

王晓佳, 王百田, 李德宁, 曹远博. 聚丙稀酰胺高吸附树脂与重金属离子的相互作用[J]. 北京林业大学学报, 2016, 38(3): 81-88. doi: 10.13332/j.1000-1522.20150362
引用本文: 王晓佳, 王百田, 李德宁, 曹远博. 聚丙稀酰胺高吸附树脂与重金属离子的相互作用[J]. 北京林业大学学报, 2016, 38(3): 81-88. doi: 10.13332/j.1000-1522.20150362
WANG Xiao-jia, WANG Bai-tian, LI De-ning, CAO Yuan-bo. Interaction between polyacrylamide super absorbent polymers and heavy metal ions[J]. Journal of Beijing Forestry University, 2016, 38(3): 81-88. doi: 10.13332/j.1000-1522.20150362
Citation: WANG Xiao-jia, WANG Bai-tian, LI De-ning, CAO Yuan-bo. Interaction between polyacrylamide super absorbent polymers and heavy metal ions[J]. Journal of Beijing Forestry University, 2016, 38(3): 81-88. doi: 10.13332/j.1000-1522.20150362

聚丙稀酰胺高吸附树脂与重金属离子的相互作用

doi: 10.13332/j.1000-1522.20150362
基金项目: 

国家科技支撑计划课题(2015BAD07B02)、中科院战略先导专项专题(xdao5050203-04-01)

详细信息
    作者简介:

    王晓佳。主要研究方向:高吸水树脂应用。Email: 271249407@qq.com 地址: 100083 北京市清华东路35号北京林业大学水土保持学院。
    责任作者: 王百田,教授,博士生导师。主要研究方向:水土保持,林业生态工程。Email: wbaitian@bjfu.edu.cn 地址: 同上。

    王晓佳。主要研究方向:高吸水树脂应用。Email: 271249407@qq.com 地址: 100083 北京市清华东路35号北京林业大学水土保持学院。
    责任作者: 王百田,教授,博士生导师。主要研究方向:水土保持,林业生态工程。Email: wbaitian@bjfu.edu.cn 地址: 同上。

Interaction between polyacrylamide super absorbent polymers and heavy metal ions

  • 摘要: 为探究高吸附树脂对重金属离子的吸附能力,用聚丙烯酰胺高吸附树脂对Cu(NO3)2、Pb(NO3)2标准溶液进行吸附,研究高吸附树脂与Cu2+、Pb2+的相互作用关系。结果表明:高吸附树脂吸水倍率随Cu2+、Pb2+浓度增大而显著减小,两者之间存在显著幂函数关系。离子吸附量随Cu2+、Pb2+浓度增大而显著增大,吸附平衡时Cu2+、Pb2+的最大吸附量分别为131.72、242.68 mg/g,高吸附树脂吸附过程符合Freundlich等温吸附方程。高吸附树脂对Cu2+、Pb2+的吸附量随时间增加而增大,吸附速率逐渐减小,吸附动力学可用准二级动力学方程描述。相同质量浓度下,高吸附树脂对Pb2+的吸附量和吸附速率均大于Cu2+。吸水凝胶在去离子水中和硝酸溶液中解吸很快,大约1 h后达到平衡,高吸附树脂在去离子水中解吸率不高,但在1 mol/L HNO3溶液中Cu2+、Pb2+解吸率均大于85%。高吸附树脂3次重复吸附后,Cu2+、Pb2+平衡吸附量分别为第1次吸附量的75.36%和78.12%,重复吸附性能良好。研究结果可为高吸附树脂应用于含有重金属的污水处理和土壤修复提供参考。

     

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  • 收稿日期:  2015-10-12
  • 刊出日期:  2016-03-31

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