JPS56164016A - Recovering method of uranium in very small amount from seawater - Google Patents
Recovering method of uranium in very small amount from seawaterInfo
- Publication number
- JPS56164016A JPS56164016A JP6717480A JP6717480A JPS56164016A JP S56164016 A JPS56164016 A JP S56164016A JP 6717480 A JP6717480 A JP 6717480A JP 6717480 A JP6717480 A JP 6717480A JP S56164016 A JPS56164016 A JP S56164016A
- Authority
- JP
- Japan
- Prior art keywords
- seawater
- uranium
- added
- amount
- precipitated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
PURPOSE: To capture uranium efficiently, by adjusting the pH of seawater to a specific value with calcium oxide or calcium hydroxide or both added thereto.
CONSTITUTION: Ca(OH)2 or CaO powder capable of forming Ca(OH)2 by the hydration thereof or a mixture thereof is added to adjust the pH of seawater to 10W11. Uranium complexes in the seawater are converted into hydroxide complexes and (co)precipitated on positively charged Mg(OH)2 to be precipitated in the seawater. The Mg(OH)2 begins precipitating just on addition of the Ca(OH)2, and deposited almost quantitatively up to the addition of a certain amount. The relation between the amount of the added calcium hydroxide and the pH is as shown in the figure. The uranium recovery ratio is low below the added amount of about 150mg/l. However, the recovery ratio is sufficiently high above about 1g/l. Therefore, the uranium content in the total coprecipitated amount is reduced to increase the separating cost in the next step.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6717480A JPS56164016A (en) | 1980-05-22 | 1980-05-22 | Recovering method of uranium in very small amount from seawater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6717480A JPS56164016A (en) | 1980-05-22 | 1980-05-22 | Recovering method of uranium in very small amount from seawater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56164016A true JPS56164016A (en) | 1981-12-16 |
Family
ID=13337259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6717480A Pending JPS56164016A (en) | 1980-05-22 | 1980-05-22 | Recovering method of uranium in very small amount from seawater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56164016A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62235218A (en) * | 1986-04-04 | 1987-10-15 | Unitika Ltd | Method for separating and recovering uranium and hydrofluoric acid |
-
1980
- 1980-05-22 JP JP6717480A patent/JPS56164016A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62235218A (en) * | 1986-04-04 | 1987-10-15 | Unitika Ltd | Method for separating and recovering uranium and hydrofluoric acid |
JPH0251850B2 (en) * | 1986-04-04 | 1990-11-08 | Yunichika Kk |
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