应用化学 ›› 1998, Vol. 0 ›› Issue (3): 109-111.

• 研究论文 • 上一篇    下一篇

可再生甲壳素吸附铬(Ⅵ)的特性研究

陈炳稔, 汤又文, 李国明, 万春华   

  1. 华南师范大学化学系 广州510631
  • 收稿日期:1997-08-19 修回日期:1997-12-23 出版日期:1998-06-10 发布日期:1998-06-10
  • 基金资助:
    广东省科委及高教厅资助

Adsorption of Cr(Ⅵ) by Regenerable Chitin

Chen Bingren, Tang Youwen, Li Guoming, Wan Chunhua   

  1. Department of Chemistry, South China Normal University, Guangzhou 510631
  • Received:1997-08-19 Revised:1997-12-23 Published:1998-06-10 Online:1998-06-10

摘要: 利用甲壳素作为铬(Ⅵ)的捕集剂已有报道[1,2],但应用资源丰富的甲壳素吸附铬(Ⅵ),至今还未工业化.原因是目前使用甲壳素及其衍生物(壳聚糖)吸附铬(Ⅵ)后不能回收,造成二次污染.我们利用非均相脱乙酰法[3,4],制备了可再生甲壳素吸附剂,使其具有吸附铬(Ⅵ)的良好性能,又可反复再生使用[5,6],避免了二次污染,为处理含铬(Ⅵ)废水开辟了新途径.本文考察了可再生甲壳素的稳定性,以及各种因素对吸附铬(Ⅵ)的影响.

关键词: 可再生甲壳素, 制备, 铬(Ⅵ), 吸附

Abstract: The influences of pH value and added salt of the system, as well as the active groups of the regenerable chitin on the adsorption of Cr(Ⅵ) by regenerable chitin have been investigated. The thermodynamic parameters in this exothermic adsorption process have been determined. The results indicated that the free amino groups on the surface of the regenerable chitin appeared the adsorption center.

Key words: regenerable chitin, preparation, Cr(Ⅵ), adsorption