Removal of cesium from aqueous solutions and radioactive waste simulants by coprecipitate flotation. Sep. Purif. Technol. (2007) ... (KATS-2) was synthesized using a hydrothermal method and utilized for the first time for cesium removal from water. KATS-2 showed a high maximum ion exchange capacity (358 mg g −1) ...

The occurrence state of cesium indicates that most cesium can be effectively enriched by froth flotation, and cesium's maximum possible recovery is 80.26%. ... pretreatment should be carried out before the pollucite floatation to remove any impurities and slime on the mineral surface to create favorable conditions for the subsequent froth ...

Key words: ion flotation, cesium(I), strontium(II), barium(II), proton-ionizable crown ether INTRODUCTION The ion flotation process is a simple and an effective method for removal and separation of metals ions from dilute aqueous solutions (c < 1.0 ⋅ 10-4 M). In this

Among them, iron-based nanoparticle-zeolite composites such as nZVI-Z and nFe/Cu-Z are very promising due to their high removal efficiency of cesium (Eljamal et …

Metal potassium ferrocyanide (KMFC) has been widely used for the removal of cesium from wastewater. Coprecipitation flotation is an efficient treatment method, but the related research is insufficient. In this study, the removal rates of Cs+ by KMFC with Ni2+, Cu2+, Co2+, and Cd2+ are investigated.

One of the most practical methods of cesium removal is that of its incorporation into hexacyanoferrates of divalent transition. Hexacyanoferrates are preferred over other …

To evaluate the cesium removal performance in a membrane process, 150 mL of 1 mg L −1 CsCl solution was permeated through the prepared composite at a pressure of 2 bar, and the removal efficiencies were determined at 20 mL intervals (Fig. 5 (b)). As a result, HCF-SA0 was able to remove cesium in the early stages, but the removal …

In this study, we investigated the removal of Cs from aqueous solutions using geomaterials. Adsorption was chosen as an effective method to develop for the removal of Cs from radioactive waste liquids. Geomaterials, including fly ash and slag as raw materials, were prepared as adsorbents using an alkali activator. The materials were …

Flotation using cationic surfactants has been investigated as a rapid separation technique to dewater clinoptilolite ion exchange resins, ... as separation and removal devices. In this study, we developed ligand immobilized conjugate adsorbent for selective cesium (Cs) removal from wastewater. The adsorbent was synthesized by …

One of the most practical methods of cesium removal is that of its incorporation into hexacyanoferrates (HCFs) of divalent transition or of heavy …

such as in cesium removal (Rashad et al., 2019; Shakir et al., 2007). Unfortunately, solid-liquid dewatering rates of these types of sludges is slow, resulting in voluminous secondary wastes that ...

The coprecipitation flotation factors affect removal of Cs+ through different mechanisms. Under the optimal treatment conditions, 97.8% Cs+ is removed after 8 h …

Demonstration of flotation to separate cesium (Cs) contaminated clays. ... Fast and efficient cesium removal from simulated radioactive liquid waste by an isotope dilution-precipitate flotation process. Chem. Eng. J., 275 (2015), pp. 342-350. View PDF View article View in Scopus Google Scholar [30]

In the case of selective cesium ion removal, the sieving effect from the structural specificity of crystals and organic molecules has been exploited. For ... Selective separation of cesium contaminated clays from pristine clays by flotation. Chem. Eng. J., 355 (2019), pp. 797-804, 10.1016/j.cej.2018.07.135. View PDF View article View in …

The mechanism of flotation is proposed and cesium removal is suggested to proceed via flotation of iron oxide coated CsTPB. Flotation technique is compared to other conventional solid–liquid separation processes (decantation, centrifugation and filtration) for separation of the iron oxide coated CsTPB particles. ...

Highlights Synthesis of resorcinol–formaldehyde spherical resin beads. Use of bio-compatible calcium alginate beads as template. Characterization of the synthesized beads using TGA, UTM SEM and BET surface area analysis techniques. Application of the synthesized beads in removal of cesium ions from aqueous waste. Sorption and kinetic …

Metal potassium ferrocyanide (KMFC) has been widely used for the removal of cesium from wastewater. Coprecipitation flotation is an efficient treatment method, but the related research is ...

The coprecipitation flotation factors affect removal of Cs+ through different mechanisms. Under the optimal treatment conditions, 97.8% Cs+ is removed after 8 h operation with the apparatus.

This review focused on cesium removal using various separation technologies, including chemical precipitation, solvent extraction, membrane …

Flotation using cationic surfactants has been investigated as a rapid separation technique to dewater clinoptilolite ion exchange resins, for the decontamination of radioactive cesium ions (Cs +) from nuclear waste effluent.Initial kinetic and equilibrium adsorption studies of cesium, suggested the large surface area to volume ratio of the …

Statistical optimization of performance determining factors is essential for the development of a cesium removal system from aqueous solutions. Therefore, factorial experimental design and multiple regression techniques were employed to assess the primary and interaction effects of the pH, initial concentration, and contact time in the …

The mechanism of flotation is proposed and cesium removal is suggested to proceed via flotation of iron oxide coated CsTPB. Flotation technique is compared to …

Calix[4]arene-crown-6 compounds are promising ligands in the removal of cesium. With this aim, a macrocyclic compound, calix[4]arene-crown-6, was chemically immobilized onto inorganic ordered mesoporous carbon material. Several adsorption parameters such as nitric acid concentration, contact time, initial cesium content, …

realized by use of coprecipitate flotation technique. This technique has shown much promise for the removal of cesium(9), as well as many other pollutants, from aqueous solutions and wastes(10-12). In co-precipitate flotation the ionic species to be removed, cesium is first occluded with a suitable hydrophobic precipitate formed in situ.

In present paper, a porous carbon composite electrode, doped with nickel hexacyanoferrate, was prepared for electrochemical removal of cesium ions from aqueous solutions. Based upon the applied voltage of −3 V, a 100% adsorption was achieved in 3 h for the initial Cs+ concentration of 10 ppm in solution. The maximum capacity was 155.2 …

After cesium removal, the amount of cesium appearing in both XRD and SEM-EDS was analyzed. The removal efficiency of ¹³³Cs was 60.21% and 51.86% for nickel nitrate and iron sulfate, respectively.

The present study aims at the removal of Eu(III) from aqueous solutions by sorptive flotation process. This process involves adsorption of Eu(III) onto bentonite and kaolinite clays followed by floatation using sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB) collectors. The effect of adsorption parameters …

Though, no publications are reported on the removal of cesium radionuclides from aqueous solutions by precipitate flotation process, suggested in the present work, using the NaTPB precipitating ...

As a typical effective cesium ion removal method, this research presents a facile method of preparing potassium copper hexacyanoferrate on the surface of sludge created from refinery wastewater treatment (KCuHCFS). The IR, SEM–EDX, BET, and TGA were used to characterize the functionalized sludge KCuHCFS. On the adsorption …

In this work, a novel non-toxic and effective adsorbent, Prussian blue functionalized microcapsules (PB-MCs) was first developed for the highly efficient removal of cesium ions by flotation separation …