Results 211 to 220 of about 10,467 (250)

Bacteria in uranium extraction

Physics Bulletin, 1977
Forecasts of uranium demand up to the end of the century need to be revised constantly because of the uncertainty at present over the rate of development of nuclear power. But even the requirements of nuclear power stations which have already been built or are under construction are going to make heavy demands on the uranium producing industry.
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Extraction of uranium from solid waste containing uranium and fluorine

Minerals Engineering, 2014
Abstract A significant amount of waste residue and adsorbent containing uranium generated by uranium refining and conversion R&D activities has been stored at the Ningyo-toge Environmental Engineering Center of the Japan Atomic Energy Agency. The treatment of these materials is one of the most important tasks in the decommissioning of the plant ...
Yusuke Ohashi, Shinji Murashita, Mitsuo Nomura   +2 more
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Kinetics of Uranium Extraction from Uranium Tailings by Oxidative Leaching

JOM, 2016
Extraction of uranium from uranium tailings by oxidative leaching with hydrogen peroxide (H2O2) was studied. The effects of various extraction factors were investigated to optimize the dissolution conditions, as well as to determine the leaching kinetic parameters.
Biao Zhang, Mi Li, Xiaowen Zhang, Jing Huang   +3 more
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Extracting Uranium From Seawater

Chemical & Engineering News Archive, 2012
If, like most scientists, you haven’t thought much about the composition of seawater, it may come as a surprise that the oceans contain uranium. In fact, they hold a staggering quantity of the heavy element. “It’s estimated that more than 4 billion metric tons of uranium are dissolved in the Earth’s oceans,” according to Benjamin P.
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Extractive spectrophotometric determination of uranium with Malachite Green

Talanta, 1977
A sensitive spectrophotometric method based on the extraction of a uranium-benzoate-Malachite Green complex by chlorobenzene is described. The absorption maximum is at 635 nm and the molar absorptivity is 8.3 x 10(4) 1 mole(-1), cm(-1). A preliminary separation of uranium by extraction with methyl isobutyl ketone from acid-deficient aluminium nitrate ...
S C, Dubey, M N, Nadkarni
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Extraction of Plutonium from Uranium-Plutonium Alloy with Uranium Trichloride

Nuclear Applications, 1967
The reaction UCl3 + Pu ⇋ PuCl3 + U was examined by measurement of the redistribution of plutonium after equilibration of molten uranium alloys containing 0.2 to 4.2% Pu with UCl3 diluted with CaCl2...
N. R. Chellew, R. K. Steunenberg
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Spectrophotometric Extraction Methods Specific for Uranium

Analytical Chemistry, 1959
Two spectrophotometric extraction methods specific for uranium are described. Uranium as tetrapropylammonium uranyl trintrate is quantitatively separated from large quantities of diverse ions by extraction into methyl isobutyl ketone (4-methyl-2-penthnone) from an acid-deficient aluminum nitrate salting solution.
W. J. Maeck, G. L. Booman, M. C. Elliott, J. E. Rein   +3 more
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Uranium Extraction from Florida Phosphates

Nuclear Technology, 1981
The purpose of this paper is to present an overview of the various processes that have been used and are currently being employed for the recovery of uranium from Florida's phosphate deposits. The objectives of this paper are to describe the phosphate deposits in Florida with respect to approximate uranium content, teach something about the processes ...
William L. MacCready, John A. Wethington, Fred J. Hurst   +2 more
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Separation and Extraction of Uranium from Leach Liquor Containing Uranium and Molybdenum by Solvent Extraction with LIX 622N

Journal of Dispersion Science and Technology, 2014
The leach liquor (0.5 g/L Mo, 0.05 g/L U) obtained from the leaching process of molybdenum-uranium ore material was treated using solvent extraction to recover U(VI) by LIX 622N, which is a salicylaldoxime derivative. The influence of various basic variables such as pH, concentration of LIX 622N, temperature, different stripping reagents, phase ratio ...
M. E. Ibrahim, T. A. Lasheen, H. B. Hassib, A. S. Helal   +3 more
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Extraction of uranium from solutions and pulps

The Soviet Journal of Atomic Energy, 1961
Extraction processes are finding increasing application for the processing of uranium from raw materials. The high selectivity and the fluid aggregate state of the extraction agents give this method advantages over the previously known processes.
B. N. Laskorin, A. P. Zefirov, D. I. Skorovarov   +2 more
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