Isotope Separation by Microchip

2016 Fiscal Year Final Research Report

• Project/Area Number: 23561013
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Osaka Sangyo University (2012-2016); Hiroshima University (2011)
• Principal Investigator: Hazama Ryuta 大阪産業大学, 人間環境学部, 准教授 (00379299)
• Co-Investigator(Renkei-kenkyūsha): OGATA YOSHIMUNE 名古屋大学, アイソトープ総合センター分館, 准教授 (70185502) ; TOKESHI MANABU 北海道大学, 大学院工学研究院, 教授 (60311437) ; MIYAKE RYO 東京大学, 大学院工学系研究科, 教授 (50417052)
• Project Period (FY): 2011-04-28 – 2017-03-31
• Keywords: 実験核物理 / 化学工学 / 同位体分離 / マイクロ・ナノデバイス

Outline of Final Research Achievements

We proved that liquid-liquid extraction (LLE) with crown-ether which was awarded a Nobel prize in 1987, can be utilized not only for ion separation, but also for isotope separation. Previously it was found that multistage process of back extraction will be impractical, due to its Ca concentration reduction with the order of 6 after LLE's iteration of 4, even though the largest enrichment of 8 % was obtained at LLE's iteration of 3. Thus, we developed that the new procedure that a valuable crown-ether organic solution can be recycled by using just a water and its Ca concentration can be maintained/kept with just a 20-30 % reduction, simultaneously. This trade-off relation between Ca concentration (partition coefficient) and separation factor was verified and its separation factor of this new method was found to be 1.0010±0.0003 (about 1/10 compared with the back extraction) and we cleared these two obstacles (Ca concentration and separation factor)for a multistage process.

Free Research Field

数物系科学