应用化学 ›› 1996, Vol. 0 ›› Issue (5): 103-105.

• 研究简报 • 上一篇    下一篇

用三辛胺萃取法处理高浓度含Cr(Ⅵ)废水

褚莹, 刘沛妍, 阎淑荣, 吴子生, 严忠   

  1. 东北师范大学化学系 长春 130024
  • 收稿日期:1995-12-25 修回日期:1996-06-05 出版日期:1996-10-10 发布日期:1996-10-10

Treatment of Waste Water Containing High Concentration of Cr(Ⅵ) by Extraction with Trioctylamine

Chu Ying, Liu Peiyan, Yan Surong, Wu Zisheng, Yan Zhong   

  1. Department of Chemistry, Northeast Normal Universily, Changchun 130024
  • Received:1995-12-25 Revised:1996-06-05 Published:1996-10-10 Online:1996-10-10

摘要: 处理含Cr(Ⅵ)废水的萃取剂有三烷基胺(N235)、三辛胺(TOA)、季胺盐及磷酸三丁脂(TBP),稀释剂为苯或煤油.由于胺类萃取剂易被Cr(Ⅵ)氧化和易发生乳化现象;TBP对Cr(Ⅵ)的选择性差,萃取效率低等实际问题,影响了萃取法处理含Cr(Ⅵ)废水,特别是处理高浓度废水(含Cr(Ⅵ)量在500 mg/L以上)的工业化应用.

关键词: 三辛胺, Cr(Ⅵ), 萃取

Abstract: A noval extraction system was introduced using trioctylamine as extractant and xylene or kerosene as diluent. This system exhibited high oxidation resistance without interfacial emulsification, therefore, the so-called third phase was not produced in the extraction process. Various factors influencing the extraction effectiveness were discussed. The experimental results of Cr(Ⅵ) recovery from waste water of high concentration Cr(Ⅵ) were reported.

Key words: trioctylamine, Cr(Ⅵ), extraction