1998
DOI: 10.1007/bf02386675
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Sorption behavior of γ-irradiated α-Al2O3

Abstract: Irradiation of o~-A1203 (Corundum) was carried out in contact with acidic media and with different doses (100-to-2500 kGy) and dose-rates (0.9, 2.6 and 6.1 kGy.h 1) of y-rays. Simultaneously parallel experiments were carried out using the same procedure, but preheated at 150 ~ for two days and then irradiated without acidic media. The solid thus obtained was used to determine the effect of y-irradiation on the sorption capacities of microamounts of fission products from strongly alkaline aqueous solutions of u… Show more

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(3 citation statements)
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“…2+ are the only significant additional species observed in solution. [19] These considerations led us to propose that the H 2 O-UO 2 (NO 3 ) 2 .6H 2 O system is a mixture of (UO 2 ) 2 (OH 2 ) 2+ , (UO 2 ) 3 (OH) 5 + , and (UO 2 ) 3 (OH) 4 2+ , in which the dominant component is the dimmer. This is in agreement with data reported by Ticknor [9], Cinnéide et al [17], Scanlan [18], and Baes [21].…”
Section: Uranium Speciationmentioning
confidence: 99%
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“…2+ are the only significant additional species observed in solution. [19] These considerations led us to propose that the H 2 O-UO 2 (NO 3 ) 2 .6H 2 O system is a mixture of (UO 2 ) 2 (OH 2 ) 2+ , (UO 2 ) 3 (OH) 5 + , and (UO 2 ) 3 (OH) 4 2+ , in which the dominant component is the dimmer. This is in agreement with data reported by Ticknor [9], Cinnéide et al [17], Scanlan [18], and Baes [21].…”
Section: Uranium Speciationmentioning
confidence: 99%
“…This value indicates that the overall surface charge is negative. The negative surface charge may be compensated for by (UO) 2 (OH 2 ) 2+ , (UO 2 ) 3 (OH) 5 + , and (UO 2 ) 3 (OH) 4 2+ , which are all positive species. It was determined, however, that both cationic ((UO) 2 (OH 2 ) 2+ , (UO 2 ) 3 (OH) 5 + , and (UO 2 ) 3 (OH) 4 2+ ) and anionic ((UO 2 (CO 3 ) 2 2and UO 2 (CO 3 ) 3 4-) uranium species were adsorbed on T (figures 1 and 2).…”
Section: Point Of Zero Charge Of the Tezontle Surfacementioning
confidence: 99%
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