东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (9): 907-910.DOI: -

• 论著 • 上一篇    下一篇

硅藻土对锌离子的吸附特性

沈岩柏;朱一民;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 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2003-09-15 发布日期:2013-06-24
  • 通讯作者: Shen, Y.-B.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50174014);;辽宁省科技攻关项目(2001304024);;辽宁省自然科学基金资助项目(220022025)·

Adsorption of zinc ions by diatomite

Shen, Yan-Bai (1); Zhu, Yi-Min (1); Wei, De-Zhou (1)   

  1. (1) Sch. of Resources and Civil Eng., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2003-09-15 Published:2013-06-24
  • Contact: Shen, Y.-B.
  • About author:-
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摘要： 研究了吉林长白硅藻土吸附水相中锌离子的吸附过程,讨论了各试验因素对吸附效果的影响·实验结果表明:吉林长白硅藻土对Zn2+有较好的吸附效果·该吸附过程进行得很快,10min左右即可达到吸附平衡·与酸性条件下的吸附效果相比,pH在中性条件下的吸附效果更佳·温度对吸附效果影响较大·对锌离子质量浓度为9 8mg/L的溶液,硅藻土用量为10g/L时Zn2+的去除率达到99 71%·经过硅藻土二次吸附后,锌离子去除率接近100%·经扫描电子显微镜的测定,硅藻土的表面圆筛形微孔是Zn2+的主要吸附位·

关键词: 硅藻土, 吸附, 锌离子, 重金属离子, 环境矿物材料

Abstract: The adsorption process of Zn2+ by white diatomite from Changbai Mountain Area in Jilin Province was investigated, with various influencing factors discussed. Test results show that the adsorption process is efficient and quick, in which an equilibrated adsorption can be got within about 10 minutes and better adsorption effect will come true with pH value under neutral conditions than under acidic conditions. Solution temperature affects obviously the adsorption effect. Up to 99.71% Zn2+ can be removed using 10 g/L diatomite to adsorb it from the solution with a concentration of 9.8 mg/L Zn2+ . After a secondary adsorption, the removing rate approaches to 100%. By SEM it is found that the surface and pores of diatomite are the main adsorbing positions.

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