PIXE in the studies of stable cesium sorption from water solutions

Levenets, V.V.; Lonin, A.Yu.; Omelnik, O.P.; Shchur, A.O.

doi:10.1002/xrs.2626

Cited by 14 publications

(6 citation statements)

References 7 publications

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“…The Si-pin detector was equipped with a collimator Ø2.5 mm and a polyvinylchloride absorber 150 μm thick. The relative error of the measurements was 5 % [5,6].…”

Section: Quantitative Determination Of Cesiummentioning

confidence: 97%

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Use of mathematical modeling for comparative evaluation of sorption capacity of natural and synthetic zeolites in relation to cesium

Lonin¹,

Levenets²,

Omelnik³

et al. 2018

Nucl. Phys. At. Energy

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The comparison of sorption capacity of clinoptilolite and synthetic zeolites (zeolite NaX and zeolite NaA) in relation to the cesium in dynamic conditions was conducted. Dynamic conditions include multiple circulation of cesium containing solution through the sorbent layer. The mathematical modeling of sorption isotherms using the Langmuir equation, the Chebyshev criterion, and the least-squares method was conducted. Correlation of actual and model results indicates that the considered models adequately reflect sorption processes occurring in zeolites. The results of the study make it possible to use the considered models for predicting the behavior of zeolites in relation to cesium.

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“…The Si-pin detector was equipped with a collimator Ø2.5 mm and a polyvinylchloride absorber 150 μm thick. The relative error of the measurements was 5 % [5,6].…”

Section: Quantitative Determination Of Cesiummentioning

confidence: 97%

“…The sorption of cesium by zeolites (naturalclinoptilolite and synthetic -zeolite NaX and zeolite NaA) under dynamic conditions has been described in the works published earlier by us [5,6]. Dynamic conditions include multiple circulation of cesium containing solution through the sorbent layer.…”

Section: Introductionmentioning

confidence: 99%

Use of mathematical modeling for comparative evaluation of sorption capacity of natural and synthetic zeolites in relation to cesium

Lonin¹,

Levenets²,

Omelnik³

et al. 2018

Nucl. Phys. At. Energy

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“…The targets prepared in this way were preserved after the initial use and could be subjected to further studies under the conditions given below [20][21][22].…”

Section: Targets Preparationmentioning

confidence: 99%

“…The analytical part of the work was performed on the analytical nuclear-physical complex "Sokol" [20][21][22]. The energy range of the electrostatic accelerator is 200-2000 keV.…”

Section: Analytical Part Of the Experimentsmentioning

confidence: 99%

Effect of Competing Ions on Multisorption (Cs+, Sr2+) by Composite Sorbents Based on Natural and Synthetic Zeolites

Lonin,

Levenets,

Omelnyk

et al. 2023

East Eur. J. Phys.

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In the course of the research, the effect of competing ions (Na+) on multisorption (Cs+, Sr2+) by composite sorbents based on natural and synthetic zeolites under static conditions was studied. It was found that the maximum concentration of competing ions (0.4 g of NaCl per 100 ml of solution) leads to a decrease in cesium sorption by 20%, and strontium sorption decreases by 10%. At the same time, high rates of sorption of cesium and strontium are preserved. Thus, for a composite sorbent (clinoptilolite -30%: zeolite NaX -70%), the sorption of cesium was 67.9%, and the sorption of strontium was 87.6%. The analytical technique was developed on the basis of the PIXE (Proton Induced X-ray Emission) method and made it possible to qualitatively and quantitatively determine the content of isotopes. The work was performed at the analytical nuclear-physical complex "Sokil". The energy range of the electrostatic accelerator is 200-2000 keV. The complex made it possible to carry out all the main methods of analysis using ion beams. The targets were placed in the exit, at the Chamber for PIXE. To carry out measurements, a vacuum with a pressure of 10-4 Pa was created in the chamber. To excite the atoms of cesium, strontium, a proton beam with an energy of Ер≈1400 keV was used. The characteristic X-ray radiation of the L-series of cesium atoms and K-series of strontium atoms was recorded by two detectors: XR-100CR Si-PIN X-Ray and Ge(HP). The sorption coefficient (Sorption, %) was used as a quantitative characteristic of the interaction of sorbents with cesium, strontium.

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“…42,135 Synthetic zeolites can be made with a wide range of pore structures and they have shown a higher potential for trapping various contaminants from air and water, 122,136 but also for separation of oil-water mixtures, 137 control of N 2 O emissions and radioactive sorption from water and wastewater. 81,[138][139][140] Synthetic zeolites such as ZSM-5 141 and MFI 142 have shown a high efficiency in the remediation of pollutants such as radon (Rn), cesium (Cs) and strontium (Sr) radionuclides from wastewater, and a significant adsorption capacity for all ions and toxic metal ions (Cr 3+ , Ni 2+ , Zn 2+ , Cu 2+ and Cd 2+ ). 141,143,144 Moreover, synthesized zeolites from fly ash demonstrated a high capacity as adsorbents in removing heavy metals from aqueous solutions and wastewater.…”

Section: Fundamentals Of Zeolitesmentioning

confidence: 99%

A review of zeolite materials used in membranes for water purification: history, applications, challenges and future trends

Far

Bruggen

Verliefde

et al. 2021

J of Chemical Tech & Biotech

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This review provides a fundamental assessment of the potential of zeolite particles incorporated into polymeric membranes in view of improving the performance of these membranes. Zeolites are of interest as having extensive potential in separation processes due to their unique frameworks and properties. Significant investigations have been carried out to improve conventional membrane properties by the inclusion of zeolites. Zeolite membranes can be classified into three categories: (i) selfsupported zeolite membranes, (ii) inorganic-supported zeolite membranes and (iii) zeolites mixed into a polymeric membrane matrix or top layer. The focus of this review is on nanosized zeolite particles incorporated into the polymeric structure of membranes, with specific attention to a polyamide layer used in pressure-driven membrane processes such as reverse osmosis. The incorporation of inorganic zeolite particles in the polymer matrix enhances the permeability without decreasing the selectivity, and increases the mechanical strength in a harsh environment and fouling and chlorine resistance of the membranes. Agglomeration of nanosized zeolites and defect formation are highlighted as the main obstacles to the fabrication of large-scale highperformance zeolite membranes in order to identify strategies to solve these issues. Among the different strategies, adding a crosslinking agent to the interfacial polymerization process might be a promising method for fabricating homogeneous zeolite-polymer composite membranes with excellent performance. This paper provides a better understanding of the knowledge acquired in the development of polymer-based zeolite nanocomposite membranes and gives perspectives for future research.

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PIXE in the studies of stable cesium sorption from water solutions

Cited by 14 publications

References 7 publications

Use of mathematical modeling for comparative evaluation of sorption capacity of natural and synthetic zeolites in relation to cesium

Use of mathematical modeling for comparative evaluation of sorption capacity of natural and synthetic zeolites in relation to cesium

Effect of Competing Ions on Multisorption (Cs+, Sr2+) by Composite Sorbents Based on Natural and Synthetic Zeolites

A review of zeolite materials used in membranes for water purification: history, applications, challenges and future trends

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