Results 41 to 50 of about 6,339 (162)

Successive Uranium and Thorium Separation from Leach Liquor of Ore Deposit of 5th Anomaly of Saghand by Solvent Extraction [PDF]

مجله علوم و فنون هسته‌ای, 2014
The present work deals with successive uranium and thorium recovery from the sulfate leach liquor of the ore deposit of the 5th Anomaly of Saghand using liquid-liquid extraction technique, where trioctylamine (TOA) and di-(2-ethylhexyl) phosphoric acid ...
S A. Milani, B Maraghe Mianji, A. A Abhari   +2 more
doaj  

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

Preparation and Uranium Extraction Performance of Composite Aerogel

He huaxue yu fangshe huaxue
Nuclear energy, as a safe, low-carbon, stable, and efficient clean energy source, demonstrates broad development prospects in global energy transition and climate change mitigation.
Tao LI, Baitong ZHANG, Jingyi MA, Qinggang HUANG, Jieru WANG, Jian CHU, Wei TIAN, Zhi QIN, Jing BAI   +8 more
doaj   +1 more source

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

Decontamination of Uranium-Contaminated Soil Sand Using Supercritical CO2 with a TBP–HNO3 Complex

Metals, 2015
An environmentally friendly decontamination process for uranium-contaminated soil sand is proposed. The process uses supercritical CO2 as the cleaning solvent and a TBP–HNO3 complex as the reagent.
Kwangheon Park, Wonyoung Jung, Jihye Park   +2 more
doaj   +1 more source

Polarographic Determination of Uranium by Extraction Separation

Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1971
Uranyl tribenzoate, formed in benzoate-benzoic acid media, was extracted into chloroform in combination with quaternary ammonium salts (DMBPAC, TEBAC and TEPAC) at pH 2.5-5.5 in the ratio of 1:1. The plot of logD against pH indicated third power dependence of pH. Similar plots of logD vs. log[B-] also showed a slope of 3.
SHINAGAWA, Mutsuaki, KATSURA, Kosho
openaire   +2 more sources

Ion exchange investigation for recovery of uranium from acidic pregnant leach solutions

Nukleonika, 2017
The article describes studies on the separation of uranium from acid pregnant leach solutions obtained from Polish uranium ores: dictyonema shales and sandstone rocks.
Danko Bożena, Dybczyński Rajmund S., Samczyński Zbigniew, Gajda Dorota, Herdzik-Koniecko Irena, Zakrzewska-Kołtuniewicz Grażyna, Chajduk Ewelina, Kulisa Krzysztof   +7 more
doaj   +1 more source

Extraction of uranium from phosphoric acid by solvent approaches using D2EHPA and TOPO: Experimental design with environmental implications [PDF]

E3S Web of Conferences
With the current nation's great demand for nuclear power, the importance to recover uranium from phosphoric acid has become relevant, Solvent extraction is one of the most effective uranium recovery methods.
Ajabli Asmae, El Ahmadi Zakia, Berkalou Kaoutar, Ghazi Mohamed   +3 more
doaj   +1 more source

Research of uranium content in the composition of phosphorites of the Aznek mines [PDF]

E3S Web of Conferences
Today, practical work is being carried out in the world on processing minerals to obtain valuable components. Leading scientists from all over the world are engaged in scientific research on the extraction and production of radioactive elements, such as ...
Khurramov Navruzbek, Nurmurodov Tulkin, Rakhimova Gulrukh, Nuriddinova Ziyoda, Sharafutdinov Ulugbek   +4 more
doaj   +1 more source

Sustainability of uranium extraction – a discussion

Nuclear power has been declared a green technology within the scope of the EU taxonomy. However, this decision did not take into account the mining of uranium and the final disposal of uranium products.  The different methods for mining uranium and their effects on the environment are discussed in this paper.
Engelbrecht, Hubert, Priester, Michael, Rechlin, Aissa   +2 more
openaire   +1 more source