Study of minor metal extraction based on emulsion flow control techniques

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H02850
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental conscious materials and recycle
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: Naganawa Hirochika 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 先端基礎研究センター, 研究主席 (00354837)
• Research Collaborator: Yanase Nobuyuki 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門先端基礎研究センター, 研究主幹 (90354852) ; Nagano Tetsushi 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門先端基礎研究センター, 研究主幹 (10354854)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: エマルション流 / 液液抽出 / レアメタル回収 / 溶媒抽出装置 / エマルションフロー現象

Outline of Final Research Achievements

The “emulsion-flow” method, where the occurrence and disappearance of emulsion (a fine mixture of an aqueous and organic phases) is controlled by only solution sending, has attracted attention as an innovative new liquid-liquid extraction technique. On the other hand, there are a number of technical problems, i.e., a temporal rapid growth of emulsion cannot be suppressed, high-density aqueous phase is not sufficiently emulsified, contact time of the two liquid phases is insufficient in the case of low extraction rate, and solid components cannot be continuously removed.
All of the problems described above have been resolved in the present study and a newly improved structure has been completed. In addition, knowledge about “emulsion-flow” phenomenon acquired through this study will be linked to establishing the methodology to design mechanical structures of emulsion-flow apparatuses.

Free Research Field

環境学