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Extraction Performance of PAO/In-N-C Electrode Materials for Uranium from Seawater
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Yan SONG, Fengju WANG, Gang CHEN, Ziming LI, Haotian WU, Hao LI, He LI, Shusen CHEN
Hydrometallurgy of China | 2025, 44(2) : 215 - 221
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Hydrometallurgy of China | 2025, 44(2): 215-221
• Experiment Research •
Extraction Performance of PAO/In-N-C Electrode Materials for Uranium from Seawater
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Yan SONG, Fengju WANG, Gang CHEN, Ziming LI, Haotian WU, Hao LI, He LI, Shusen CHEN
Affiliations
  • Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing 101149, China
Published: 2025-04-28 doi: 10.13355/j.cnki.sfyj.2025.02.010
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An indium-nitrogen-carbon electrode material (PAO/In-N-C) modified with amidoxime was prepared using graphite felt as matrix material by chemical modification and coating, and uranium was extracted from seawater by electrochemical workstation. The effects of the PAO/In-N-C electrode material dosage, applied voltage, pH of spiked seawater and adsorption time on the extraction of uranium from low-concentration spiked seawater were investigated. The ion selectivity and recycling performance of the electrode material were tested, and the interaction mechanism between the electrode and uranyl ions was discussed. The results show that the extraction rate of uranium is 71.16% under the conditions of applied voltage of -3~0 V, PAO/In-N-C electrode material dosage of 7 mg, adsorption time of 400 min, and seawater pH=8.10.PAO/IN-N-C electrode material reduction of uranium in seawater is divided into two steps: electroadsorption and electrodeposition. Firstly, the electromagnetic field is used to accelerate the migration of $\mathrm{UO}_{2}^{2+}$ to the electrode surface, and then the electroneutral compound UO2 is formed and deposited on the electrode surface. The material has remarkable adsorption kinetics, good ion selectivity and reusability,and is expected to be used for uranium extraction from seawater.

uranium extraction from seawater  /  PAO/In-N-C electrode  /  spiked seawater  /  uranium  /  extraction
Yan SONG, Fengju WANG, Gang CHEN, Ziming LI, Haotian WU, Hao LI, He LI, Shusen CHEN. Extraction Performance of PAO/In-N-C Electrode Materials for Uranium from Seawater[J]. Hydrometallurgy of China, 2025 , 44 (2) : 215 -221 . DOI: 10.13355/j.cnki.sfyj.2025.02.010
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Year 2025 volume 44 Issue 2
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doi: 10.13355/j.cnki.sfyj.2025.02.010
  • Receive Date：2024-09-21
  • Online Date：2025-07-05
  • Published：2025-04-28
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  • Received：2024-09-21
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    Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing 101149, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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