The effect of mineral composition on the interaction of strontium ions with geological formations

Nemes, Zoltán; Nagy, Noémi M.; Komlósi, Andrea; Kónya, József

doi:10.1016/j.clay.2005.12.004

Cited by 17 publications

(2 citation statements)

References 19 publications

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“…Moreover, various natural and synthetic adsorbents have been used for adsorption of strontium in LRW. These adsorbent materials included natural aluminosilicate minerals, − zeolites, , metal oxides, − MOFs, and titanate-based materials. , Since most of these materials are powders, it is difficult to separate them in practical application processes. Many researchers have already prepared adsorption materials into different shapes or loaded them on other materials, but this increases the cost and operation difficulty.…”

Section: Introductionmentioning

confidence: 99%

One-Pot Preparation of NaA Zeolite Microspheres for Highly Selective and Continuous Removal of Sr(II) from Aqueous Solution

Wang

Chen

et al. 2018

ACS Sustainable Chem. Eng.

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This paper describes a synthesis method and adsorption properties of geopolymer microspheres toward strontium ions; first, it was prepared by a dispersion–pelletizing–solidification (DPS) method followed by transformation into NaA zeolite microspheres (about 100 μm) through an in situ heat curing process. The adsorption experiments were investigated and the experimental data were fitted well by the pseudo-second-order kinetic model and Freundlich isotherm model. Loading experiments were performed by batch and column process techniques. The maximum adsorption capacity in the batch process was assigned to be 106.28 mg/g, the zeolite microspheres’ adsorption of strontium ions reached adsorption equilibrium in approximately 15 min. In the dynamic column, the most suitable flow rate was found to be 4 mL/min; this was higher compared with other sorbents with the same particle size. Moreover, the zeolite microspheres have a good dynamic separation effect, the concentration of the outlet Sr(II) ions from the column began to rise after 18 h with a bed height of 1.5 cm. The competitive adsorption capabilities are investigated and have the following order Na+ < Mg2+ < K+ < Ca2+, indicating that this adsorbent has a good adsorption effect in real seawater. Through the analysis of the solution after adsorption, the process is not only chemical adsorption but also ion exchange. The used adsorbents could be easily regenerated using 0.05 mol/L EDTA-2Na solution. This result showed that NaA zeolite microspheres are convenient and low-cost adsorbents for the removal of Sr(II) from liquid wastes.

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Section: Introductionmentioning

confidence: 99%

One-Pot Preparation of NaA Zeolite Microspheres for Highly Selective and Continuous Removal of Sr(II) from Aqueous Solution

Wang

Chen

et al. 2018

ACS Sustainable Chem. Eng.

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“…As for strontium, its concentration in alluvial sediments is largely defined by mixing of Sr originated from limestones and dolomites with Sr derived from siliciclastic rocks (Palmer and Edmond 1992). In this case, it most probably substitutes for calcium in calcite (Cal) in the fine-grained fraction but also can be adsorbed on clay minerals and other phyllosilicates (Nemes et al 2006). This interplay is indicated by negative loading of Cal to T 2 T 3 and J carbonate complex associating it indirectly with MPl via Phyl (MINERAL model) whereas in the TRACE model Sr is directly related to MPl.…”

Section: Lithology/minor-and Trace-element Modelmentioning

confidence: 97%

Canonical correlation analysis as a tool in the provenance study of overbank sediments from the small mountainous watersheds

2011

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Canonical correlation analysis (CCA) is used in this study in order to trace the lineage of overbank sediment from the initial erosion of the parent rocks down to deposition of detrital material in alluvium of the small mountainous watersheds of the Ž umberak area, Croatia. It helps to elucidate relations between the hierarchically structured systems (rocks, minerals, elements) represented by the ensembles of lithological, mineralogical and geochemical variables. Taking their place in the vertical order of hierarchical complexity, geochemistry and mineralogy of the recent material are considered dependent variable regarding the related watershed lithology, with geochemical variables (major and trace elements) last in the chain. Three canonical models are built and cross-compared in order to unravel the between-level relationships and infer the basic patterns of mineral and geochemical flux from the source rocks to basin. From these, the two hierarchical (provenance) chains epitomized in recombination of the first two canonical functions have been derived highlighting complementary provenances, weathering styles, and dispersion avenues in alluvial sedimentation of the study area. The first clearly separates carbonate from siliciclastic sedimentary source while the second illuminates the origin of phyllosilicate and ferric oxyhydroxide phases with associated suite of elements in absence of clear carbonate signal.

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Sorption and retardation of strontium in fine-particle media from a VLLW disposal site

Zuo

Teng

Wang

2009

J Radioanal Nucl Chem

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The effect of mineral composition on the interaction of strontium ions with geological formations

Cited by 17 publications

References 19 publications

One-Pot Preparation of NaA Zeolite Microspheres for Highly Selective and Continuous Removal of Sr(II) from Aqueous Solution

One-Pot Preparation of NaA Zeolite Microspheres for Highly Selective and Continuous Removal of Sr(II) from Aqueous Solution

Canonical correlation analysis as a tool in the provenance study of overbank sediments from the small mountainous watersheds

Sorption and retardation of strontium in fine-particle media from a VLLW disposal site

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