| Separation of Praseodymium and Dysprosium by Solvent Extraction Using Fatty Acid as an Extractant |
| Fatty Acid 추출제를 사용한 용매추출법에 의한 Praseodymium과 Dysprosium의 분리 |
|
김세미1, 이은수2, 김정훈1, 김영운1, 박종목1, 허남호3, 강호철1 |
1한국화학연구원
2동아대학교
3경북대학교 |
|
|
| Abstract |
|
The separation of praseodymium and dysprosium has been studied by solvent extraction using fatty acid series such as hexanoic acid, octanoic acid, 2-ethylhexanoic acid, decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, and oleic acid as an extractant in kerosene as a diluent. In this study, we want to know extractive trend depending on the carbon chain length and the pH of aqueous phase.
The results obtained from solvent extraction of praseodymium and dysprosium using fatty acids are as follows;the pH0.5 of dysprosium is from 4.93 to 5.94, and that of praseodymium is from 4.24 to 5.34. The pH0.5 of them is increased with increasing the length of the carbon chain of the fatty acid. Using 1.5 M octanoic acid as an extractant, we can get the highest separation factor of praseodymium and dysprosium that is 49. |
| Key Words:
Selectivity, Recovery, Dysprosium, Praseodymium, Fatty acid, Extraction |
|
PDF Links
Full text via DOI
Download Citation
