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利用吡啶类离子液体萃取分离电镀污泥中的Cr^6+与Fe^3+ 预览

Extraction Separation of Cr^6+ and Fe^3+ from Electroplating Sludge Using Pyridine Ionic Liquids
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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Fe^3+的萃取能力较弱。探索[OPy]Cl萃取剂对萃取分离Cr^6+、Fe^3+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。 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 Cr^6+ and Fe^3+ 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 Cr^6+,but its extraction ability for Fe^3+ 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.
作者 周超 李勇 薛向欣 ZHOU Chao;LI Yong;XUE Xiangxin(College of Metallurgy,Northeastern University,Shenyang 110819,China)
出处 《电镀与精饰》 CAS 北大核心 2019年第1期41-46,共6页 Plating & Finishing
基金 国家自然科学基金资助项目(U1502273).
关键词 电镀污泥 N-辛基吡啶氯盐 离子液体 萃取分离 electroplating sludge N-octylpyridinium chloride ionic liquids extraction separation
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