东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (1): 99-102.DOI: -

• 论著 • 上一篇    下一篇

钙基膨润土对水相中铜离子的吸附

朱一民;王忠安;苏秀娟;魏德洲;   

  1. 东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-01-15 发布日期:2013-06-23
  • 通讯作者: Zhu, Y.-M.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50174014);;

Adsorption of Cu2+ by Ca-bentonite in wastewater

Zhu, Yi-Min (1); Wang, Zhong-An (1); Su, Xiu-Juan (1); Wei, De-Zhou (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-01-15 Published:2013-06-23
  • Contact: Zhu, Y.-M.
  • About author:-
  • Supported by:
    -

RichHTML

0

PDF (PC)

1131

摘要： 通过考察吸附条件对吸附率及吸附负载量的影响,研究了钙基膨润土对水相中铜离子的吸附特性.实验结果表明,钙基膨润土对铜离子有较好的吸附效果;钙基膨润土对铜离子的吸附在15 min就达到吸附平衡;铜离子的吸附在15 min就达到吸附平衡;当铜离子初始质量浓度为190.6 mg/L,pH=6.03,t=20℃,吸附时间τ=15 min,吸附剂用量为10 g/L时,膨润土对铜离子的吸附率为94%.对初始质量浓度为635.4 mg/L的铜离子溶液,膨润土对铜离子的吸附率仍达57%.从吸附前后膨润土的扫描电镜图片和X射线衍射图谱对比分析可知,膨润土对铜离子的吸附不仅有表面和孔道吸附,还存在着晶层间吸附.

关键词: 钙基膨润土, 铜离子, 吸附, 水处理, 重金属

Abstract: The adsorption of copper ions by Ca-bentonite in wastewater was investigated experimentally. The results indicated that such a biosorbent has favorable adsorbing effect on copper ions, and the adsorption equilibrium comes about within 15 minutes. When the dose of Ca-bentonite is 10 g/L with the concentration of Cu up to 190.6 g/L the biosorbing rate is 94.0%, while the concentration of Cu2+ up to 635.4 g/L the biosorbing rate is 57.0%. The XRD analysis shows that the process of copper ions by Ca-bentonite indicates not only the surface and pore adsorption but also the crystal-interlamination adsorption by the bentonite.

中图分类号: