Extraction of Uranium from Sea Water

Davies, R. V.; Kennedy, James E.; McIlroy, R.W.; Spence, R. D.; Hill, Kolli

doi:10.1038/2031110a0

Cited by 354 publications

(243 citation statements)

References 2 publications

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“…Research activities on the extraction of uranium from seawater from a number of European countries are reported in the literature, including Finland (35), France (36-39), Germany (40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54)(55)(56)(57)(58), Greece (59), Italy (60-64), Poland (65), Sweden, and UK (1,(66)(67)(68)(69)(70)(71). Among the European countries, Germany by far has the largest number of publications and patents on this subject.…”

Section: Overviewmentioning

confidence: 99%

Recent International R&D Activities in the Extraction of Uranium from Seawater

Rao¹

2010

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Section: Overviewmentioning

confidence: 99%

Recent International R&D Activities in the Extraction of Uranium from Seawater

Rao¹

2010

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“…These batch metal uptake experiments were carried out using the standard metal salts Cu(NO 3 ) 2 and UO 2 (CH 3 COO) 2 at pH range 1 -5. All experiments were carried out in flasks placed on a shaker at 20ºC.…”

Section: Resin -Metal Ion Uptakementioning

confidence: 99%

“…Hence, the design of effective host molecules for uranyl ions is related with the economic importance of selective extraction of uranium from water. [1][2][3] The process using adsorbents is thought to be the most effective method for recovery of uranium because of the high selectivity for uranium, the case of handling, the safety to the environment, etc. Examples of well-studied polymer ligands of uranyl ions are: carboxylate such as EDTA analogues, phenol, β-ketone, ammonium, sulfonic acid, and amidoxime.…”

Section: Introductionmentioning

confidence: 99%

Binding of Uranyl Ions by Water-Insoluble Polymers Containing Multiligand Groups

Rivas¹,

Peric²,

Villegas³

et al. 2008

J. Chil. Chem. Soc.

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ReagentsAcrylic acid (AA, Merck), 4-Acryloylmorpholine (AMo, 97% Aldrich), 4-vinyl pyridine (VPy, 95% Aldrich), 1,4-divinylbenzene (DVB, Fluka), N-(3-dimethylamino)propylmethacrylamide (NDAPA, Aldrich), 3-dimeth ylamino)propylacrylate (DAPA, Aldrich) were purified by distillation. 2,2'-Azoisobutyronitrile (AIBN, Merck) was recrystallized from methanol, N,N'-methylene-bis-acrylamide (MBA, 99% Aldrich) and ammonium persulfate (AP, 95% Aldrich) were used without further purification.The analytical grade, copper(II) nitrate, uranyl acetate, nitric acid, perchloric acid, sodium hydroxide and sodium carbonate were purchased from Merck.Synthesis of the resins P(NDAPA), P(DAPA), P(AMo-AA), P(NDAPA-AA), P(NDAPA-VPy), and P(DAPA-AA)The resins P(NDAPA), P(DAPA), P(AMo-AA), P(NDAPA-AA), P(NDAPA-VPy), and P(DAPA-AA) were synthesized by radical polymerization by mixing the corresponding reagents in a polymerization flask as follows:P ( BINDING OF URANYL IONS BY WATER-INSOLUBLE POLYMERS ABSTRACTThe crosslinked resins poly(N-(3-dimethylamino)propylmethacrylamide) P(NDAPA), poly((3-dimethylamino)propylacrylate)P(DAPA), poly(4-acryloylmorpholine-co-acrylic acid) P(AMo-AA), poly(N-(3-dimethylamino)propylmethacrylamide-co-4-vinyl pyridine) P(NDAPA-VPy) and poly((3-dimethyl amino)propylacrylate-co-acrylic acid) P(DAPA-AA), poly(N-(3-dimethylamino)propylmethacrylamide-co-acrylic acid) P(NDAPA-AA) were obtained by radical polymerization. These resins were completely insoluble in water. The uptake metal ion properties were studied by batch equilibrium procedure for copper(II) and uranyl ions. The polymerization mixtures were kept under nitrogen at 70ºC for 8 h (see Scheme 1). Then methanol was added and the resin was removed from the flask, filtered and washed with abundant water. The resin was dried under vacuum at 40ºC and then milled and sized by screening. The fraction with mesh size in the range of 250-500 mm was chosen.

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“…Land of uranium reserves won't satisfy people's needs for future nuclear power.Looking for the new sources of uranium become the various countries' research hot spot. Vast uraniumdissolve in Seawaterabout 4.5 billion tons, are one thousand times of the land reserves [2] . If we can make full use of uranium, then we can effectively solve the problem of lack of uranium, meet the needs of nuclear reactor in the future [3] , can effectively reduce exhaust emissions and the destruction of natural environment, and it is also benefit to human.…”

Section: Introductionmentioning

confidence: 99%

Amidoxime Selective Adsorption for Uranyl and Transition Metals

Wei¹,

Chi²,

Guo³

et al. 2015

Proceedings of the 2015 International Symposium on Energy Science and Chemical Engineering

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Abstract:Uranium is the most useful resource in nuclear reactor. But the land resource won't satisfy the nuclear reactor in the future. There still existsa large amountofuraniumin the seawater.The seawater environmenthas been simulated by Amsterdam Density Functional(ADF) forgetingan orderbetween uranyl (UO 2 2+ )and transtition metals under the amidoxime selective adsorpition.Amidoxime selective adsorption for uranyl (UO 2 2+ ) and transition metalswas calculated.The results show that the order of different transition metals with amidoxime in the water environment is Fe(III)> Ni(II)> Co(II)> Cu(II)>UO 2 (VI), based on the designation of ligand structure,bond lengths, the thermodynamic parameters, and the relation between frequency and absorption intensity.Maybe it means the transition metal combines with amidoxime than uranium easier.

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Extraction of Uranium from Sea Water

Cited by 354 publications

References 2 publications

Recent International R&D Activities in the Extraction of Uranium from Seawater

Recent International R&D Activities in the Extraction of Uranium from Seawater

Binding of Uranyl Ions by Water-Insoluble Polymers Containing Multiligand Groups

Amidoxime Selective Adsorption for Uranyl and Transition Metals

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Extraction of Uranium from Sea Water

Cited by 354 publications

References 2 publications

Recent International R&amp;D Activities in the Extraction of Uranium from Seawater

Recent International R&amp;D Activities in the Extraction of Uranium from Seawater

Binding of Uranyl Ions by Water-Insoluble Polymers Containing Multiligand Groups

Amidoxime Selective Adsorption for Uranyl and Transition Metals

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Recent International R&D Activities in the Extraction of Uranium from Seawater

Recent International R&D Activities in the Extraction of Uranium from Seawater