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Chemistry, Analytical
Mustapha A. Raji, Alafara A. Baba, Abhilash
Summary: This study examined the extraction of uranium from sulphate pregnant solution using Cyanex (R) 272 in kerosene diluent. The parameters affecting the extraction mechanism, including Cyanex (R) 272 concentrations and equilibrium pH, were investigated. The results showed that under optimized conditions (0.3 mol/L Cyanex (R) 272, 27 +/- 2 degrees C, equilibrium pH range of 3-4), an extraction efficiency of 97.1 +/- 3% U(VI) could be achieved. Maximum stripping of U(VI) from the loaded organic phase was achieved using a 0.5 mol/L Na2CO3 solution, and the uranium was recovered as sodium diuranate.
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Mahmoud O. Abd El-Magied
Summary: Rare earth elements, especially cerium, have become increasingly important in high-tech industries and medical applications due to their superior chemical characteristics. This study developed functionalized chitosan macromolecule sorbents from shrimp waste to recover cerium ions from a leached monazite liquor. The biosorbents exhibited high affinities for cerium ions, with removal percentages of 85.73% and 90.92% for polyamines and polycarboxylate chitosan sorbents, respectively. These results demonstrate the high biosorption capacity of the biosorbents for cerium ions in aqueous and leach liquor streams.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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Engineering, Chemical
Alok Kumar Nayak, Niharbala Devi, Kadambini Sarangi
Summary: This study investigated the extraction of Mo(VI) and V(V) from the simulated leach liquor of hydrodesulfurization spent catalyst using Cyanex 572 as the extractant. Different pH conditions affected the extraction rates of Mo(VI) and V(V). Adjusting the H2SO4 concentration and Cyanex 572 concentration could modulate the extraction efficiency.
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Fuqiang Guo, Zhifeng Zhang, Hongfei Li, Shulan Meng, Deqian Li
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Fuqiang Guo, Hongfei Li, Zhifeng Zhang, Shulan Meng, Deqian Li
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
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Engineering, Chemical
Zhifeng Zhang, Hongfei Li, Fuqiang Guo, Shulan Meng, Deqian Li
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Fuqiang Guo, Syouhei Nishihama, Kazuharu Yoshizuka
SOLVENT EXTRACTION AND ION EXCHANGE
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Engineering, Chemical
Zhifeng Zhang, Hongfei Li, Fuqiang Guo, Hui Zhang, Deqian Li, Shulan Meng
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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HF Li, FQ Guo, ZF Zhang, DQ Li, ZH Wang
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