ZHOU Chao,LI Yong,XUE Xiangxin.Extraction Separation of Cr6+ and Fe3+ from Electroplating Sludge Using Pyridine Ionic Liquids[J].Plating & Finishing,2019,(1):41-46.[doi:10.3969/j.issn.1001-3849.2019.01.009]
利用吡啶类离子液体萃取分离电镀污泥中的 Cr6+与Fe3+
- Title:
- Extraction Separation of Cr6+ and Fe3+ from Electroplating Sludge Using Pyridine Ionic Liquids
- 分类号:
- O652. 62
- 文献标志码:
- A
- 摘要:
- 多数电镀污泥含有Cr(VI），对环境危害性极大，但其又是重要的稀有金属，对其资源化利用显得尤为重要。本文以N-辛基吡啶氯盐（[OPy]Cl）离子液体为萃取剂，正戊醇为稀释剂，采用溶剂萃取法进行电镀污泥硫酸浸出液中Cr6+的萃取分离的实验研究。结果表明，N-辛基吡啶氯盐（[OPy]Cl）离子液体对Cr6+具有较好的萃取选择性，而对于Fe3+的萃取能力较弱。探索[OPy]Cl萃取剂对萃取分离Cr6+、Fe3+的方法，不仅有利于环境与资源，不会产生二次污染，而且为湿法冶金工业提供了一种高效、绿色的冶金分离技术。
- Abstract:
- Electroplating sludge mainly contains Cr(VI) and is extremely harmful to the environment, but Cr(VI) is also an important rare metal, so it is especially important for its resource utilization. In this paper, the research was designed to extract and separate Cr6+and Fe3+by solvent extraction using pyridine ionic liquids as extractant and pentanol as diluent. The results showed that N-octylpyridinium chloride ionic liquid had good extraction selectivity for Cr6+, but its extraction ability for Fe3+ was weak. Exploring the extraction and separation of chromium and iron with [OPy]Cl extractant not only is beneficial to the environment and resources, but also provides an efficient and green metallurgical separation technology for hydrometallurgical industry.
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备注/Memo
收稿日期： 2018-07-29
修回日期： 2018-08-15
基金项目： 基金项目:国家自然科学基金资助项目（U1502273）