Results 131 to 140 of about 1,793,957 (199)

The extraction of uranium by amidoximated orlon

Talanta, 1997
The nitrile groups in polyacrylonitrile (Orlontrade mark) fabric were converted to amidoxime groups to produce an amidoximated orlon fabric. The amidoximated fabric was evaluated for its ability to extract uranium from aqueous solution with a wide range of temperature and pH values.
S, Katragadda, H D, Gesser, A, Chow
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OSCILLATORY EXTRACTION OF URANIUM

Solvent Extraction and Ion Exchange, 1998
The kinetics of U and Ce extraction by tri-n-butyl-phosphate (TBP) and the redox potential behavior in the aqueous phase have been investigated in an oscillatory extraction system. The extraction has been followed continuously by UV-visible spectroscopy, potentiometry, and radioactive counting methods.
Mikhail A. Afonin, Vadim V Romanovski, Vadim A Scherbakov   +2 more
openaire   +1 more source

Spectrophotometric determination of uranium in process streams of a uranium extraction plant

Talanta, 1997
This paper deals with the development and standardization of procedures for the determination of uranium on a routine basis in various process streams of a uranium extraction plant, covering a wide range of concentrations from 350 g 1(-1) down to 5 mg 1(-1) using only a spectrophotometric technique.
B N, Murty, Y V, Jagannath, R B, Yadav, C K, Ramamurty, S, Syamsundar   +4 more
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Extraction chromatography of uranium with dioctyl sulphoxide

Talanta, 1970
Uranium(VI) is quantitatively extracted from aqueous perchlorate media into dioctyl sulphoxide in 1,2-dichloroethane. The extracted species contains four sulphoxides for each uranium. Most other metal ions are not appreciably extracted. On columns containing a solid support impregnated with dioctyl sulphoxide in 1,2-dichloroethane, uranium(VI) may be ...
J S, Fritz, D C, Kennedy
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Carbon materials for extraction of uranium from seawater

Chemosphere, 2021
With the rapid growth of population and industrialization, the energy crisis and environmental pollution as two main difficulties urgently need to be solved nowadays. The development and utilization of nuclear energy is of great significance for solving energy support, national security and environmental protection.
Han, Guo, Peng, Mei, Jingting, Xiao, Xingshui, Huang, Alhadi, Ishag, Yubing, Sun   +5 more
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On microfluidic solvent extraction of uranium

Chemical Engineering and Processing - Process Intensification, 2018
Abstract This experimental study is focused on several aspects of microfluidic solvent extraction of uranium in setups comprising of microbore tube(s) connected to microfluidic junction(s). Extraction experiments are carried out using simulated lean aqueous phase having 550 ppm uranium in 1 M HNO3 as the feed.
Mayur Darekar, K.K. Singh, Pallavi Sapkale, A.K. Goswami, S. Mukhopadhyay, K.T. Shenoy   +5 more
openaire   +1 more source

Endeavoring a High Amidoxime Utilization Ratio and Adsorption Capacity for Uranium Extraction From Seawater: A Hydrogen Bonding Reconstruction Strategy

Advanced Functional Materials
Functionalized amidoxime [AO, R−C(NH2)═N(OH)] is widely used for uranium extraction from seawater, but increasing the effective functional sites for high AO utilization in adsorbents remains challenging.
Guohui Yang, Y. Zhang, Qiu-Hong Zhu, Xue Xia, Ning Pan, Chunyan Ma, Jiale Liu, Yang Liu, Yilin Qin, Qingdong Zhang, Faqin Dong, Jun Li, Xiaoqin Nie   +12 more
semanticscholar   +1 more source

Co-extraction of uranium and thorium

JOM, 1972
The advantages of a complete solvent extraction route for the recovery of uranium and thorium.
G. M. Ritcey, B. H. Lucas
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Tuning Local Charge Distribution in Multicomponent Covalent Organic Frameworks for Dramatically Enhanced Photocatalytic Uranium Extraction.

Angewandte Chemie, 2023
Optimizing the electronic structure of covalent organic framework (COF) photocatalysts is essential for maximizing photocatalytic activity. Herein, we report an isoreticular family of multivariate COFs containing chromenoquinoline rings in the COF ...
Hui Yang, Mengjie Hao, Yinghui Xie, Xiaolu Liu, Yanfang Liu, Zhongshan Chen, Xiangke Wang, G. Waterhouse, Shengqian Ma   +8 more
semanticscholar   +1 more source

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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