cesium removal study
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cesium removal study

Removal of Cesium from Aqueous Solution by Using Newly ...

to separate and remove cesium (Cs) from waste solutions. In this study, walnut shell (WS, biosorbent), akadama clay (AC, clay material) and ammonium . molybdophosphate – polyacrylonitrile (AMP-PAN) beads (synthetic material) were used as adsorption materials for cesium removal from aqueous solution. The comprehensive comparison was

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Study on Removal of Cesium in Water Treatment System

As the turbidity was adjusted by 74 NTU and 103 NTU using the surrounding solids near G-water intake and yellow soils, removal rate of cesium was about 56% and 51%, respectively. In case of a

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[PDF] A study on removal of cesium and strontium from ...

Cesium and strontium concentrations were determined by atomic absorption spectroscopy (AAS). The removal efficiency of strontium by Na-birnessite was around 95 % which was much higher than that of cesium (~ 32 %). The results imply that strontium has a higher affinity for Na-birnessite than cesium because strontium, divalent cation leads to larger electrostatic attraction than monovalent cesium.】

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Evaluation of Removal Behavior of Cesium in Contaminated ...

The removal efficiency of Cs from contaminated soil depends on its chemical species bound with the soil components. Therefore, in this study, we observed the elution behavior of Cs based on speciation analysis in a Cs removal experiment conducted on contaminated soils. The treatment method was optimized using simulated contaminated soil and applied to

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Removal of Cesium in Water Using Novel Composites ...

07/07/2020  Prussian Blue (PB) has been used as an adsorbent to effectively remove cesium, however it has the problem of being difficult to separate in water. In this study, carbonyl iron (CI) which is known as ferromagnetic synthesized with precursor of PB (FeCl 3 and potassium ferricyanide) to solve the problem of PB particles. Adsorption isotherm experiments were also conducted to evaluate the cesium removal

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Evaluation of cesium removal from radioactive waste water ...

15/02/2015  In another study Nilchi et al. reported that 64% removal of cesium was possible from the solution when the sorption was applied in presence of copper hexa cyanoferrate–PAN composite. According to Joseph et al. [9] it was found that 36 mol% of Cs 2 O can be loaded successfully without crystallization when iron phosphate was used to immobilize the inactive cesium onto the iron

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Laboratory-scale studies on the removal of cesium with a ...

Download Citation Laboratory-scale studies on the removal of cesium with a submerged membrane adsorption reactor This study developed a submerged membrane adsorption reactor system and ...

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Study on the illite modification for removal of ...

It has been known well that illite adsorb selectively and strongly the cesium due to frayed edge sites. The quantity of the FES in the illite could be controlled by weathering processes. Therefore, this study was modified illite samples through artificial weathering in the laboratory to increase sorption efficiency for cesium. Abundant interlayer cations(i.e., K, Ca) were eluted within 1 day, while Si and Al were

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Cesium separation from radioactive waste by extraction

01/02/2020  So far, various methods have been developed and applied for practical use for cesium removal from aqueous solutions, such as precipitation , , solvent extraction , membrane separation , , , , and adsorption , , , , , , , , . Generally, radionuclides can only reduce their radioactivity through decay. The treatment of radioactive wastewater by a variety of physicochemical methods is essentially to

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Cesium and Strontium Separation Technologies Literature Review

Cesium removal from acidic solutions utilizing transition metal cyanoferrate sorbents has been widely demonstrated [7,8,9,10]. Historically, cyanoferrates were used to precipitate cesium from solution because their small particle size and low permeability made application in fixed-bed columns impractical [7, 11]. Efforts to prepare cyanoferrates as engineered forms proved successful and at least one form of

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Removal of Cesium in Water Using Novel Composites ...

Prussian Blue (PB) has been used as an adsorbent to effectively remove cesium, however it has the problem of being difficult to separate in water. In this study, carbonyl iron (CI) which is known as ferromagnetic synthesized with precursor of PB (FeCl₃ and potassium ferricyanide) to solve the problem of PB particles. Adsorption isotherm experiments were also conducted to evaluate the cesium removal ability of the manufactured novel composites. The results obtained in the present study ...

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Conceptual Study of In-Tank Cesium Removal Using an ...

SUMMARY This conceptual study investigates a generic in-tank cesium removal flowsheet using two inorganic ion exchange materials: titanates (CST) and IE-96 zeolites. The mathematical model derived for the study assumed a batch process where the ion exchange material and waste are brought into contact in a storage tank with optimal'mixing.

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Evaluation of Removal Behavior of Cesium in Contaminated ...

The removal efficiency of Cs from contaminated soil depends on its chemical species bound with the soil components. Therefore, in this study, we observed the elution behavior of Cs based on speciation analysis in a Cs removal experiment conducted on contaminated soils. The treatment method was optimized using simulated contaminated soil and applied to

Get PriceEmail contact

Removal of Cesium in Water Using Novel Composites ...

07/07/2020  Prussian Blue (PB) has been used as an adsorbent to effectively remove cesium, however it has the problem of being difficult to separate in water. In this study, carbonyl iron (CI) which is known as ferromagnetic synthesized with precursor of PB (FeCl 3 and potassium ferricyanide) to solve the problem of PB particles. Adsorption isotherm experiments were also conducted to evaluate the cesium removal

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Evaluation of cesium removal from radioactive waste

15/02/2015  In another study Nilchi et al. reported that 64% removal of cesium was possible from the solution when the sorption was applied in presence of copper hexa cyanoferrate–PAN composite. According to Joseph et al. [9] it was found that 36 mol% of Cs 2 O can be loaded successfully without crystallization when iron phosphate was used to immobilize the inactive cesium onto the iron

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Adsorptive removal of cesium from aqueous solution

01/06/2018  In this study, air oxidized-BC was studied for the removal of Cs from aqueous solution. Batch adsorption experiments were carried out under different experimental conditions such as contact time, solution pH, initial cesium concentrations, temperature as well as the presence of competitive ions. The experimental results revealed that the alkali condition was suitable for Cs adsorption compared ...

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Statistical techniques for the optimization of cesium ...

The study also suggested that maximum cesium removal occurred at pH, initial concentration, and contact time of 6, 200 mg/L, and 30 min, respectively. Moreover, the statistically significant interaction effect was observed between contact time and initial concentration. The experimental data were also fitted with Tόth, Langmuir, Dubinin-Astakhov (D-A), Freundlich, and Hill models and found ...

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Selective Cesium Adsorptive Removal on Using

To remove the radioactive cesium from the polluted environment, tea leaves were chosen as cheap, and abundantly available environment-friendly bio-adsorbents to investigate the alkali metals adsorption. Fresh and used tea leaves (FT and UT) were found to have high efficiency and selectivity for cesium adsorption, after the crosslinking with concentrated sulfuric acid. Calculation of the proton ...

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Cesium separation from radioactive waste by

01/02/2020  This review systematically summarized and analyzed the recent advances in the crown ethers and calixarenes derivatives for cesium separation, especially focusing on the adsorbents based on extractants for cesium removal from aqueous solution, such as the grafting coordinating groups (e.g. crown ether and calixarenes) and coordinating polymers (e.g. MOFs) due to their unique coordination

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Study on adsorption behavior of cesium using ammonium ...

17/07/2012  Study on adsorption behavior of cesium using ammonium tungstophosphate (AWP)-calcium alginate microcapsules. Yan Wu 1, Hitoshi Mimura 2, Yuichi Niibori 2, Takashi Ohnishi 3, Shinichi Koyama 3 YueZhou Wei 1 Science China Chemistry volume 55, pages 1719 – 1725 (2012)Cite this article. 221 Accesses. 15 Citations. Metrics details. Abstract. A functional microcapsule

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Removal of Cesium in Water Using Novel Composites ...

Prussian Blue (PB) has been used as an adsorbent to effectively remove cesium, however it has the problem of being difficult to separate in water. In this study, carbonyl iron (CI) which is known as ferromagnetic synthesized with precursor of PB (FeCl₃ and potassium ferricyanide) to solve the problem of PB particles. Adsorption isotherm experiments were also conducted to evaluate the cesium removal

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Conceptual Study of In-Tank Cesium Removal Using an ...

SUMMARY This conceptual study investigates a generic in-tank cesium removal flowsheet using two inorganic ion exchange materials: titanates (CST) and IE-96 zeolites. The mathematical model derived for the study assumed a batch process where the ion exchange material and waste are brought into contact in a storage tank with optimal'mixing.

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Statistical techniques for the optimization of cesium ...

The optimum region of cesium removal was identified by constructing a contour plot. The study revealed that initial concentration was the most significant factor followed by contact time. The study also suggested that maximum cesium removal occurred at pH, initial concentration, and contact time of 6, 200 mg/L, and 30 min, respectively. Moreover, the statistically significant interaction effect was

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Adsorptive removal of cesium from aqueous solution

01/06/2018  In this study, air oxidized-BC was studied for the removal of Cs from aqueous solution. Batch adsorption experiments were carried out under different experimental conditions such as contact time, solution pH, initial cesium concentrations, temperature as well as the presence of competitive ions. The experimental results revealed that the alkali condition was suitable for Cs adsorption compared to

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Evaluation of cesium removal from radioactive waste

15/02/2015  In another study Nilchi et al. reported that 64% removal of cesium was possible from the solution when the sorption was applied in presence of copper hexa cyanoferrate–PAN composite. According to Joseph et al. [9] it was found that 36 mol% of Cs 2 O can be loaded successfully without crystallization when iron phosphate was used to immobilize the inactive cesium onto the iron

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Nano-Fe/Cu particles for the remediation of cesium ...

Cesium removal was investigated using batch technique with respect to initial cesium concentration, contact time, temperature, pH, competing cations and dosage of nanoparticles. The results showed that nano-Fe/Cu particles demonstrated effective performance for removal of cesium. The removal efficiency exceeded 99% at initial cesium concentration of 1 mg/L and 1 g/L dose. The removal of cesium ...

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Effective removal of radioactive cesium from

01/12/2020  A composite adsorbent for the removal of radioactive cesium (137 Cs) was synthesized by immobilizing potassium cobalt ferrocyanide in the micro pores of the zeolite chabazite.The synthetically optimized composite adsorbent demonstrates a rapid cesium adsorption rate under both salt-free and high-salt conditions with a high distribution coefficient of cesium (≥10 5 mL/g).

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Removal of Cesium Ions from Aqueous Solution by ...

The parametric study reveals that the increase of adsorbate concentration (10 −8 to 10 −3 mol dm −3) and temperature (303 to 333 K) enhances the removal of the ions and from thermal and kinetic data it is inferred that the adsorption of cesium ions follows first order rate law, obeys Freundlich isotherm and is endothermic in nature.

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Selective Cesium Adsorptive Removal on Using

To remove the radioactive cesium from the polluted environment, tea leaves were chosen as cheap, and abundantly available environment-friendly bio-adsorbents to investigate the alkali metals adsorption. Fresh and used tea leaves (FT and UT) were found to have high efficiency and selectivity for cesium adsorption, after the crosslinking with concentrated sulfuric acid.

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Study on adsorption behavior of cesium using ammonium ...

17/07/2012  Wu, Y., Mimura, H., Niibori, Y. et al. Study on adsorption behavior of cesium using ammonium tungstophosphate (AWP)-calcium alginate microcapsules. Sci. China Chem. 55, 1719–1725 (2012). https://doi/10.1007/s11426-012-4696-5. Download citation. Received: 14 April 2012. Accepted: 06 June 2012. Published: 17 July 2012. Issue Date: September 2012

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