Removal of cesium ions from A-type zeolites using sodium tetrakis(4-fluorophenyl)borate and sodium tetraphenylborate

Saito, Yuko; Shimizu, Shota; Kumagai, Shogo; Kameda, Tomohito; Yoshioka, Toshiaki

doi:10.1007/s10967-020-07514-w

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…However, that leads to a large amount of radioactive industrial waste, which is hard to handle [1,2]. In addition to industrial production, the discharge of radioactive pollutants may also be caused by force majeure disasters, such as the leakage of Fukushima nuclear power plant in 2011 caused by the tsunami [3,4]. In the most circumstances, radionuclides are in a cationic state with water as the medium.…”

Section: Introductionmentioning

confidence: 99%

Insight into Adsorption of Cesium Ion in Aqueous Solution Based on Inorganic Modified Bentonite

Chen¹,

Chen²,

Zhou³

et al. 2023

Pol. J. Environ. Stud.

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Bentonite, with excellent osmotic swelling performance and low hydraulic conductivity, represents as an ideal material for the final disposal of radioactive wastes. This paper investigates bentonite and three inorganic modified bentonites (Na-Bentonite, K-Bentonite and Mg-Bentonite) in adsorption of Cs + , one of the major hazardous metals in radioactive waste. The effects of solution pH value, sorbent dosage and initial concentration on the adsorption performance of Cs + were investigated, as well as the effects of temperature and reaction time on the adsorption capacity and removal rate of heavy metal Cs + . The internal structure and chemical composition of bentonite before and after adsorption were also discussed. The results indicate that the maximum adsorption rate is 95.30%, and the estimated best adsorption capacity is almost 28.2 mg/g. 1.1 g bentonite dosage and 1.0 mol/L solution concentration in alkaline environment is the most suitable conditions for cesium adsorption reaction, which can be witnessed in Na-Bentonite.

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Section: Introductionmentioning

confidence: 99%

Insight into Adsorption of Cesium Ion in Aqueous Solution Based on Inorganic Modified Bentonite

Chen¹,

Chen²,

Zhou³

et al. 2023

Pol. J. Environ. Stud.

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“…18,19 Such ions do not contain any prospective coordination sites for the counterions, whereas any electron-de cient and electron-rich atoms are sterically hidden. Tetrabutylammonium, 20 tetrabutylphosphonium, 21 tetraoctylammonium, 19 tetrakis(penta uorophenyl)borate, 22 tetrakis(4-uorophenyl)borate 23 are a few noteworthy examples whose structures were reliably characterized and successful synthetic procedures were proven. Weakly coordinating ions give rise to organic salts with low melting temperatures and unprecedented conformational exibilities.…”

Section: Introductionmentioning

confidence: 99%

Elimination of Interionic Hydrogen Bonding in The Imidazolium-Based Ionic Liquids

Chaban¹

2021

Preprint

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Hydrogen bonding is a phenomenon of paramount importance in room-temperature ionic liquids. The presence or absence of the hydrogen bond drastically alternates self-diffusion, shear viscosity, phase transition points, and other key properties of a pure substance. For certain applications, the presence of cation-anion hydrogen bonding is undesirable. In the present paper, we investigate perspectives of removing the hydrogen...fluorine interionic attraction in the imidazolium borates, the strongest non-covalent interaction in this type of system. Chemical modification of the tetrafluoroborate anion not only eliminates hydrogen bonding but also changes the most thermodynamically preferable orientation of the cation in the vicinity of the anion. Although the most acidic hydrogen atom of the imidazole ring remains the paramount electrophilic center of the cation, it does not engender a strong electrostatically driven coordination pattern with the properly modified anions. The reported new physical insights help compose more robust ionic liquids and tune solvation properties of the imidazolium-based RTILs.

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Desorption of Cs+ from contaminated biotite with a low molecular mass organic acid

Akemoto

Iwamura

Takahashi

et al. 2021

Journal of Environmental Chemical Engineering

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Removal of cesium ions from A-type zeolites using sodium tetrakis(4-fluorophenyl)borate and sodium tetraphenylborate

Cited by 6 publications

References 32 publications

Insight into Adsorption of Cesium Ion in Aqueous Solution Based on Inorganic Modified Bentonite

Insight into Adsorption of Cesium Ion in Aqueous Solution Based on Inorganic Modified Bentonite

Elimination of Interionic Hydrogen Bonding in The Imidazolium-Based Ionic Liquids

Desorption of Cs+ from contaminated biotite with a low molecular mass organic acid

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