Results 91 to 100 of about 1,193,585 (233)

The solvent extraction and stripping process using Alamine 336 with a case study of uranium

Scientific Reports
In this research, a comprehensive study of the solvent extraction of uranium (VI) from acidic sulfate solutions using Alamine 336 diluted in kerosene was scrutinized.
Fazel Zahakifar, Fereshte Khanramaki, Davood Ghoddocy Nejad, Valiyollah Ghazanfari, Ali Yadollahi   +4 more
doaj   +1 more source

Papers presented to the AAEC Symposium on Uranium Processing, Lucas Heights, 20-21 July, 1972.

, 1972
Review of nuclear fuel cycles and world trends; Conventional processes to produce yellow cake; Carbonate leaching of uranium ores, a review; The application of mineralogy to uranium ore processing; Extraction investigations with some Australian uranium ...
Gooden, JEA, Henley, KJ, Miles, GL, Kelly, A, Goldney, LH, Butler, RD, Thomas, JA, Hardy, CJ, Costello, JM, Canning, RG, Silver, JM, Baillie, MG, Cooper, RS, Richmond, M, Harltey, FR, Alfredson, PG   +15 more
core  

Uranium Extraction From Laboratory-Synthesized, Uranium-Doped Hydrous Ferric Oxides

Environmental Science & Technology, 2009
The extractability of uranium (U) from synthetic uranium-hydrous ferric oxide (HFO) coprecipitates has been shown to decrease as a function of mineral ripening, consistent with the hypothesis that the ripening process will decrease uranium lability. To evaluate this process, three HFO suspensions were coprecipitated with uranyl (UO2(2+)) and maintained
Smith, Steven, Douglas, Matthew, Moore, Dean A., Kukkadapu, Ravi K., Arey, Bruce   +4 more
openaire   +3 more sources

The relationship between cellular protein content and selenium accumulation in freshwater microalgae

Integrated Environmental Assessment and Management, EarlyView.
Abstract Variability in the bioconcentration of selenium (Se) by primary producers at the base of the food web results in uncertainty in predictions of bioaccumulation and ecological risk to higher trophic level organisms. Water chemistry, speciation of Se, and periphyton community composition have all been suggested as factors that contribute to ...
Courtney Bogstie, Melanie Gallant, James R. Elphick, Christopher Kennedy   +3 more
wiley   +1 more source

DNA nano-pocket for ultra-selective uranyl extraction from seawater

Nature Communications, 2020
The extraction of metals from seawater is an area of great potential; especially for the extraction of uranium. Here, the authors report on the synthesis of a DNA based uranium adsorbent with high selectivity and demonstrate the potential for the DNA ...
Yihui Yuan, Tingting Liu, Juanxiu Xiao, Qiuhan Yu, Lijuan Feng, Biye Niu, Shiwei Feng, Jiacheng Zhang, Ning Wang   +8 more
doaj   +1 more source

Rate phenomena in uranium extraction by amines [PDF]

, 1979
Kinetics studies and other rate measurements are reviewed in the amine extraction of uranium and of some other related and associated metal ions. Equilibration is relatively fast in the uranium sulfate systems most important to uranium hydrometallurgy ...
McDowell, W.J., Coleman, C.F.
core  

Managing and visualising geochemical data for tephra correlation with the IntChron Integration Tool

Journal of Quaternary Science, EarlyView.
ABSTRACT There is now a wealth of glass‐shard geochemical data for volcanic ash (tephra) layers from a wide range of volcanoes and eruptions, providing invaluable datasets for tephrochronology. However, compilation of published data to assess tephra correlations leads to large files and requires careful management.
Victoria C. Smith, Danielle McLean, Eloise Wilkinson‐Rowe, Emma L. Horn, Gavin Kane, Christopher Bronk Ramsey   +5 more
wiley   +1 more source

Review of recent developments in uranium extraction technology.

, 1978
Developments in uranium ore processing technology since the AAEC Symposium on Uranium Processing in July 1972 are reviewed. The main developments include the use of: - autogenous or semi-autogenous grinding, - benefication techniques such as radiometric ...
Crawford, RE, Alfredson, PG, Ring, RJ
core  

Southern Portugal hydroclimate of the last millennium from near‐annually resolved speleothem records

Journal of Quaternary Science, EarlyView.
ABSTRACT Hydroclimate in Portugal is influenced by the North Atlantic subtropical high‐pressure system (the Azores High) and by internal climate modes, most prominently the North Atlantic Oscillation, which may shift in position and/or intensity due to anthropogenic climate change.
Alaina Chormann, Alan D. Wanamaker, Diana Thatcher, David P. Gillikin, Yemane Asmerom, Victor Polyak, Caroline C. Ummenhofer, Frederico Tátá Regala, Anouk Verheyden, Suzanne Ankerstjerne, Rhawn F. Denniston   +10 more
wiley   +1 more source

Electrospun fibrous sorbents for the removal of uranium and americium from aqueous media

Polymer International, EarlyView.
Polymethacrylate‐based electrospun microfibers with tertiary amino functionalities are evaluated as adsorbents for U‐232 and Am‐241 in both simplified and complex (seawater) water matrices, highlighting their ability for efficient actinide removal. Abstract Polymethacrylate‐based electrospun microfibers containing tertiary amino functionalities were ...
Andreas Hadjianastasi, Ioannis Ioannidis, Petri C Papaphilippou, Ioannis Pashalidis, Theodora Krasia‐Christoforou   +4 more
wiley   +1 more source