Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Osamu TOMIOKA"'
Autor:
Osamu Tomioka, Yoshihiro Meguro, Tomoki Imai, Mikio Nakashima, Le Thi Kim Dung, Kuniaki Takahashi
Publikováno v:
Analytical Sciences. 22:1425-1430
The supercritical fluid extraction (SFE) method using CO(2) as a medium with an extractant of HNO(3)-tri-n-butyl phosphate (TBP) complex was applied to extract uranium from several uranyl phosphate compounds and simulated uranium ores. An extraction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b01105885a863c219385b53fa0b2c561
https://doi.org/10.2116/analsci.22.1425
https://doi.org/10.2116/analsci.22.1425
Publikováno v:
Journal of Nuclear Science and Technology. 43:98-102
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfce9be446a56d35e8e3498292addf10
https://doi.org/10.3327/jnst.43.98
https://doi.org/10.3327/jnst.43.98
Autor:
Zenko Yoshida, Osamu Tomioka, Yoshihiro Meguro, Shuichi Iso, Youichi Enokida, Ichiro Yamamoto
Publikováno v:
The Journal of Supercritical Fluids. 31:141-147
A new method referred to as supercritical CO 2 fluid leaching (SFL), which is based on selective dissolution of uranium oxides with the supercritical CO 2 fluid containing the HNO 3 –tri- n -butyl phosphate (TBP) complex, has been developed for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbbaea2ca2027e4d726ef30f8754a178
https://doi.org/10.1016/j.supflu.2003.10.005
https://doi.org/10.1016/j.supflu.2003.10.005
Publikováno v:
Industrial & Engineering Chemistry Research. 42:5037-5041
Tri-n-butyl phosphate (TBP) reacts with nitric acid to form a hydrogen-bonded complex TBP(HNO3)x(H2O)y that is highly soluble in supercritical fluid carbon dioxide (SF-CO2). The value of x can be up to 2.5, whereas the value of y varies between 0.4 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c6b27fb42e967b3cca2a8c1f0e19c57
https://doi.org/10.1021/ie030010j
https://doi.org/10.1021/ie030010j
Publikováno v:
Separation Science and Technology. 37:1153-1162
A method for the direct extraction of a metal utilizing supercritical CO2 containing tri-n-butylphosphate (TBP)–HNO3 (TBP), which is the TBP solution of TBP–HNO3 complex, has been developed for the recovery of Nd from its oxide. This method was a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d62fe05e91cdc9bdccec7d6ade71841
https://doi.org/10.1081/ss-120002247
https://doi.org/10.1081/ss-120002247
Publikováno v:
Journal of Nuclear Science and Technology. 38:1097-1102
Dissolution behavior of U3O8 and UO2 using supercritical CO2 medium containing HNO3-TBP complex as a reactant was studied. The dissolution rate of the oxides increased with increasing the HNO3/TBP ratio of the HNO3-TBP complex and the concentration o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e6cbe9f6214ddff784d2d02dba2e823
https://doi.org/10.1080/18811248.2001.9715141
https://doi.org/10.1080/18811248.2001.9715141
Publikováno v:
Journal of Nuclear Science and Technology. 38:1097-1102
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad67306f099639277d61ed9ba9aef61d
https://doi.org/10.3327/jnst.38.1097
https://doi.org/10.3327/jnst.38.1097
Publikováno v:
Progress in Nuclear Energy. 37:417-422
Studied was an application of supercritical fluid extraction (SFE) to cleaning of the materials contaminated with metal oxides. By using supercritical CO2 including chemical complexes of tri-n-buthylphosphate (TBP) and HNO3, lanthanide was recovered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce50e030e4369a2780520c49edc36bdf
https://doi.org/10.1016/s0149-1970(00)00081-0
https://doi.org/10.1016/s0149-1970(00)00081-0
Publikováno v:
ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B.
A method, in which incinerated ash is solidified with a cement material, has been developed to dispose radioactive incinerated ash waste. In order to bury the solidified product, it is required that elution of hazardous heavy metals included in the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5034c65802215f92105a8b67940485d
https://doi.org/10.1115/icem2011-59102
https://doi.org/10.1115/icem2011-59102
Publikováno v:
ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 1.
To develop a metal separation method using supercritical CO2 (scCO2 ) solvent for the decontamination process of radioactive wastes, the reverse micelle formation in scCO2 was investigated. Dodecyltrimethylammonium bromide (DTAB) as a surfactant to f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2b484795f6c5a77996e89f5d61cfdb9
https://doi.org/10.1115/icem2010-40257
https://doi.org/10.1115/icem2010-40257