Sorption of U(VI) onto a decarbonated calcareous soil

Zhang, Yuying; Zhao, Hongyuan; Fan, Qiaohui; Zheng, Xinghua; Li, Ping; Liu, Shengping; Wu, Wangsuo

doi:10.1007/s10967-010-0948-z

Cited by 31 publications

(9 citation statements)

References 33 publications

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“…With the content of magnetic illite increase, the available sites on magnetic illite surfaces increase providing more sorption sites to adsorb U(VI) [8,28]. Similar results were reported by Xu et al [29] and Zhang et al [30].…”

Section: Effect Of Solid-to-liquid Ratiosupporting

confidence: 85%

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Sorption of U(VI) on magnetic illite: effects of pH, ions, humic substances and temperature

Yin

et al. 2015

J Radioanal Nucl Chem

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The sorption of U(VI) on magnetic illite as a function of pH, ionic strength, solid-to-liquid ratio, shaking time, humic acid (HA) and temperature was investigated through batch experiments. The results showed that the sorption process had a strong dependent on the changes of pH, temperature and HA in solution. And at below pH 6.5, with decreasing of the valences of anions such as Cl -, SO 2À 4 and PO 3À 4 ; the sorption amount increased obviously, but that was almost not influenced by cations. This experiment could provide some data base for the studies of actinide elements migration in geological media.

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Section: Effect Of Solid-to-liquid Ratiosupporting

confidence: 85%

“…The rapid equilibrium time suggests that this sorption process can be attributed to surface complexation and/or chemical sorption rather than physical sorption [30,31].…”

Section: Effect Of Solid-to-liquid Ratiomentioning

confidence: 99%

Sorption of U(VI) on magnetic illite: effects of pH, ions, humic substances and temperature

Yin

et al. 2015

J Radioanal Nucl Chem

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“…Zirconium oxides have shown absorption of some lanthanides in solution and bentonites (phyllosilicates) have great cation exchange capacity. Studies on other candidates such as calcareous clays are still in progress [19]. One advantage of the vadose minerals studied in this work in the sorption of uranium is that they can be found as natural components in some soils.…”

Section: Introductionmentioning

confidence: 93%

Composition and properties of tectosilicate-uranium layers of soil

et al. 2012

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Structure and superficial properties of tectosilicates found in soils with potential to retain uranium are studied in this work. These tectosilicates are largely available as natural minerals in the soil and are composed mainly by anorthite (CaAl2Si2O8), albite (NaAlSi3O8) and orthoclase (KAlSi3O8), in which albite has approximately 3 times the content of orthoclase and 2.5 times the content of anorthite. However, anorthite has a double cell structure, which could result in approximately the same sorption effect as albite. The acidity constants calculated with the surface complexation model suggested that the three components have similar amphoteric behavior in presence of high ionic strength ground salt solutions. The composite mineral has a specific surface area of 20.5 m 2 g-1 with site density of 2.8 sites nm-2. These characteristics make this mineral a good candidate for uranium capture.

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“…Liu et [33]. Recently, Wu et al studied the sorption of uranyl ions onto a decarbonated calcareous soil (DCS), and found that the sorption of U(VI) on DCS was significantly influenced by pH values of the aqueous phase, indicating the formation of inner-sphere complexes at solid-liquid interface [34].…”

Section: Environmental Radiochemistrymentioning

confidence: 99%

Nuclear and radiochemistry in China: present status and future perspectives

Shi

Zhao

2012

Radiochimica Acta

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Actinides / Nuclear energy chemistry / Radioanalytical chemistry / Radiopharmaceutical chemistry / Education and training / ChinaSummary. Nuclear and radiochemistry is one of the frontier areas of chemistry with high impact on national security, energy supply, scientific advances, social and economic development. Nuclear and radiochemistry in China is now experiencing a renaissance, which is being strongly motivated by China's huge demand for nuclear energy. With this in review, the progress in nuclear and radiochemistry of China is selectively addressed. Some hot topics have been summarized and the main research results achieved by Chinese scientists in this field are highlighted, with emphasis on the basic nuclear chemistry, actinide and trans-actinide chemistry, chemistry of spent nuclear fuel reprocessing, radioanalytical chemistry, environmental radiochemistry and radiopharmaceutical chemistry, etc. Some measures about how to promote the radiochemical education and research in China are suggested, and future perspectives are briefly outlined as well.

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Sorption of U(VI) onto a decarbonated calcareous soil

Cited by 31 publications

References 33 publications

Sorption of U(VI) on magnetic illite: effects of pH, ions, humic substances and temperature

Sorption of U(VI) on magnetic illite: effects of pH, ions, humic substances and temperature

Composition and properties of tectosilicate-uranium layers of soil

Nuclear and radiochemistry in China: present status and future perspectives

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