Sorption behaviour of Np(IV) on illite, shale and MX-80 in high ionic strength solutions

Nagasaki, Shinya; Riddoch, Justin; Saito, Takumi; Goguen, Jared; Walker, Andrew; Yang, Tammy Tianxiao

doi:10.1007/s10967-017-5290-2

Cited by 15 publications

(1 citation statement)

References 31 publications

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“…We followed the sorption experimental procedure we conducted in Np(V) and Np(IV) sorption previously [14][15][16]. In the GB, MX-80 was added into a polycarbonate reaction vessel and Na-Ca-ClO 4 or Na-Ca-Cl-ClO 4 solution was added into the reaction vessel.…”

Section: Methodsmentioning

confidence: 99%

Contribution of Ternary Reaction to Pd Sorption on MX-80 in Na-Ca-Cl Solution at High Ionic Strength

Nagasaki

Riddoch

Racette

2019

Science and Technology of Nuclear Installations

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In this study, we first examined the sorption of Pd on MX-80 in Na-Ca-ClO4 solution as a function of pHc (3–9) and ionic strength (0.1 M–4 M) and confirmed that the experimentally derived Kd values could be fitted by a 2-site protolysis nonelectrostatic surface complexation and cation exchange (2SPNE SC/CE) model using three binary surface complexation constants previously estimated. Then, we investigated the sorption of Pd on MX-80 in Na-Ca-Cl-ClO4 solution as a function of pHc (3–9) and Cl-/ClO4- molar concentration ratio (0–∞) at the ionic strength = 4 M. We found that the sorption of Pd on MX-80 in Na-Ca-Cl-ClO4 solution could be simulated only by the three binary and one ternary surface complexations (S-OH+Pd2++4Cl-↔S-OPdCl43-+H+). This suggests that the contribution of other ternary surface complexations such as ≡S-OH + Pd2++xCl-↔ ≡S-OPdClxx-1-+H+ (x = 1, 2 and 3) to Pd sorption in Na-Ca-Cl-ClO4 solution with ionic strength = 4 M was negligibly small.

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Section: Methodsmentioning

confidence: 99%

Contribution of Ternary Reaction to Pd Sorption on MX-80 in Na-Ca-Cl Solution at High Ionic Strength

Nagasaki

Riddoch

Racette

2019

Science and Technology of Nuclear Installations

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A study on the adequacy of some actinides adsorption on a modified guanidine Schiff base from laboratory effluents

El‐Gamasy,

Mubark,

Razek

et al. 2024

Can J Chem Eng

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Besides the distinctive features and medicinal benefits of guanidine Schiff bases, the possibility of their use as a sorbent for radioactive contents of effluents was developed in the current study. A series of adsorption experiments were performed with 2,2‐benzene‐1,4‐dildiguanidine di‐salicylate synthesized sorbent from sulphate feed solutions containing UO22+ and ThSO42+ species each separately. Infrared studies demonstrated that the sorbent links to both actinides via the azomethine nitrogen atom and the hydroxyl groups on the sorbent. Thermal analyses were also performed. Using the greatest adsorption results, UO22+ and ThSO42+ were able to bind to modified guanidine Schiff base (MGSB) sorbent with uptake capacities of 98 and 54 mg/g respectively. The maximal uptake was achieved at pH 5.5 and 3.5 and 90 min contact time for UO22+ and ThSO42+, respectively. The equilibrium adsorption results for UO22+ and ThSO42+ were in good agreement with Langmuir isotherm and the pseudo‐second‐order reaction model and demonstrated the endothermic nature and kinetic improvement by increasing temperatures. All kinetic and isotherm results demonstrated the chemical adsorption of both UO22+ and ThSO42+ at the MGSB active sites. Positive ∆H (40.54 and 40.16 kJ/mol for UO22+ and ThSO42+, respectively) proved the endothermic nature of the adsorption process.

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Effective adsorption of U(VI) from aqueous solution using magnetic chitosan nanoparticles grafted with maleic anhydride: equilibrium, kinetic and thermodynamic studies

Shehzad

Zhou

Zhao

et al. 2017

J Radioanal Nucl Chem

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Sorption behaviour of Np(IV) on illite, shale and MX-80 in high ionic strength solutions

Cited by 15 publications

References 31 publications

Contribution of Ternary Reaction to Pd Sorption on MX-80 in Na-Ca-Cl Solution at High Ionic Strength

Contribution of Ternary Reaction to Pd Sorption on MX-80 in Na-Ca-Cl Solution at High Ionic Strength

A study on the adequacy of some actinides adsorption on a modified guanidine Schiff base from laboratory effluents

Effective adsorption of U(VI) from aqueous solution using magnetic chitosan nanoparticles grafted with maleic anhydride: equilibrium, kinetic and thermodynamic studies

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