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Journal Articles

New liquid-liquid extraction apparatus; "Emulsion-flow" extractor

Naganawa, Hirochika

Bunseki Kagaku, 66(11), p.797 - 808, 2017/11

AA2017-0526.pdf:2.29MB

https://doi.org/10.2116/bunsekikagaku.66.797

Times Cited Count：6 Percentile：22.86(Chemistry, Analytical)

A new liquid-liquid extraction method, called the emulsion-flow method, has recently been developed at Japan Atomic Energy Agency (JAEA). The emulsion-flow method, where low cost, simplicity, high efficiency, compactness, safety, and eco-friendly go together, has attracted attention, and has been expected to bring innovation to liquid-liquid extraction technologies. Compared with conventional industrial apparatuses, an emulsion-flow apparatus successfully combines the lowest cost superior to a spray column and the highest performance (the highest efficiency and the highest processing speed) comparable to a centrifugal extractor. Furthermore, the emulsion-flow method can also be used for collecting particulate components by utilizing their aggregation onto a liquid-liquid interface and for purifying water polluted by oil with its remarkable phase-separating ability.

Journal Articles

Pretreatment method in FIA by solvent extraction and the application possibility of novel solvent extraction method

Sugita, Tsuyoshi

Journal of Flow Injection Analysis, 33(1), p.39 - 40, 2016/06

http://jafia.kyushu-u.ac.jp/japanese/jfia/contents/33_1/HP/JFIA33(1)(2016)PP.39.pdf

A novel solvent extraction way, emulsion flow (EF) method, has been developed at JAEA. EF method achieves both good emulsion formation and quick phase separation only by solution sending. In this report, I referred Flow Injection Analysis (FIA) using solvent extraction as a preprocessing technique and introduced an outline of the EF method as such. Furthermore, I mentioned the application possibility of the EF method to the preprocessing in FIA with its advantage for extracting and concentrating a trace component from a large-volume sample.

Journal Articles

Radiation processing in my research life

Tamada, Masao

Hoshasen Kagaku (Internet), (100), P. 16, 2015/10

Collection of a rare metal form hot spring water attracted medias and had a public response by reports of numerous newspapers and television programs in my 35 years' research and development of radiation processing technologies and its technology management. Collection experiments of the rare metal were carried out in Kusatsu Onsen, Gunma prefecture, where discharge of hot spring water is the largest in Japan. We were on standby 6 am there when morning live broadcast started from 8 am. The invention of emersion grafting solved the problems in the cost reduction of adsorbent production owing to its high grafting yield and led the way for technology transfer of filter for the removal of metal ions in ppb level from semiconductor cleaning liquid and adsorbent for radio-active cesium.

JAEA Reports

The Uranium waste fluid processing examination by liquid and liquid extraction method using the emulsion flow method

Kanda, Nobuhiro; Daiten, Masaki; Endo, Yuji; Yoshida, Hideaki; Mita, Yutaka; Naganawa, Hirochika; Nagano, Tetsushi; Yanase, Nobuyuki

JAEA-Technology 2015-007, 43 Pages, 2015/03

JAEA-Technology-2015-007.pdf:5.33MB

The centrifuge which has the subtlety information concerning the nuclear nonproliferation used for uranium enrichment technical development exists in the uranium enrichment facilities of Ningyo-toge Environmental Engineering Center, Japan Atomic Energy Agency. This centrifugal is performing separation processing of the radioactive material adhering to the surface of parts by wet decontamination of ultrasonic cleaning by dilute sulfuric acid and water, etc. By removing the uranium contained in waste fluid, generated sludge reduces activity concentration. And the possibility of reduction of sludge processing is examined. For this reason, from the 2007 fiscal year, Nuclear Science and Engineering Directorate and cooperation are aimed at, and development of the extraction separation technology of the "uranium" by the emulsion flow method is furthered. The test equipment using the developed emulsion flow method was tested. And dilute sulfuric acid and water were used for the examination as actual waste fluid. The result checked whether the various performances in Basic test carried out in Nuclear Science and Engineering Directorate would be obtained.

Journal Articles