Comparative adsorption study of Th4+ from aqueous solution by hydrothermally synthesized iron and aluminum oxide nanoparticles

Broujeni, B. Rouhi; Nilchi, A.; Hassani, Amir Hessam; Saberi, R.

doi:10.1007/s13762-018-1824-6

Cited by 17 publications

(6 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This sorption kinetics is significantly faster than those of the recently reported UiO-66-(COOH) 2 and UiO-66-COOH materials, which require up to 1 and 2 h of contact time to reach a sorption equilibrium . The uptake of Th 4+ by iron and aluminum oxide nanoparticles also needs 60 and 70 min, respectively, to reach an equilibrium . Such fast kinetics are necessary for conducting separation or remediation under the conditions with large dosages of radiation to avoid potential sorbent degradation.…”

Section: Resultsmentioning

confidence: 80%

See 1 more Smart Citation

Selective Capture Mechanism of Radioactive Thorium from Highly Acidic Solution by a Layered Metal Sulfide

Bao

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Thorium as a potential nuclear fuel for the next-generation thorium-based molten salt reactors holds significant environmental and economic promise over the current uranium-based nuclear reactors. However, because thorium (Th 4+ ) usually coexists with other rare earth elements, alkali or alkaline earth metals in minerals, or highly acidic radioactive waste, seeking acidresistant sorbents with excellent selectivity, high capacity, and fast removal rate for Th 4+ is still a challenging task. In this work, we investigated a robust layered metal sulfide (KInSn 2 S 6 , KMS-5) for Th 4+ removal from strong acidic solutions. We report that KMS-5 could capture Th 4+ from a 0.1 M HNO 3 solution with extremely high efficiency (∼99.9%), fast sorption kinetics (equilibrium time < 10 min), and large distribution coefficient (up to 1.5 × 10 6 mL/g). Furthermore, KMS-5 exhibited excellent sorption selectivity towards Th 4+ in the presence of large amounts of competitive metal ions like Eu 3+ , Na + , and Ca 2+ . This extraordinary capture property for Th 4+ is attributed to the facile ion exchange of Th 4+ with K + in the interlayers and subsequent formation of a stable coordination complex via Th−S bonds. These results indicate that KMS-5 is a promising functional sorbent for the effective capture of Th 4+ from highly acidic solutions.

show abstract

Section: Resultsmentioning

confidence: 80%

“…17 The uptake of Th 4+ by iron and aluminum oxide nanoparticles also needs 60 and 70 min, respectively, to reach an equilibrium. 38 Such fast kinetics are necessary for conducting separation or remediation under the conditions with large dosages of radiation to avoid potential sorbent degradation.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Selective Capture Mechanism of Radioactive Thorium from Highly Acidic Solution by a Layered Metal Sulfide

Bao

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The thermodynamic parameters of the adsorption of U(VI) on Duolite ES‐467 as Gibbs free energy (ΔG, kJ/mol), enthalpy change (ΔH, kJ/mol), and entropy change (ΔS, kJ/(mol.K)) were studied. These parameters were calculated using the following equations: [41,42]

true Δ G = - 2.303 R T . l o g K_{d}

true Δ G = Δ H - T Δ S

true l o g K_{d} = \frac{Δ S}{2.303 R} - \frac{Δ H}{2.303 R T}

…”

Section: Resultsmentioning

confidence: 99%

Recovery of uranium from ferruginous Shale mineralization from Um Bogma formation, Egypt, via Duolite ES‐467 chelating resin

Radwan

Gado

El–Wahab

et al. 2021

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

The ferruginous shale iron content (27.5 %) is a serious problem that prevents the separation of uranium. Chemical dissolution of the ferruginous shale from Um Bogma Formation, Egypt, has been studied for the recovery of uranium using the acidic leaching method. Um Bogma representative sample assays 700 ppm of uranium as the element of interest. The effective dissolution parameters such as acid concentrations, solid/liquid addition ratio, leaching time, and leaching temperature were planned to investigate. It was found that The dissolution rate was greatly influenced by the studied dissolution factors. Analysis of the kinetic data showed that the dissolution mechanism is fitted well to shrinking core model within chemical reaction as a rate determining step. It was found that the recorded activation energy (Ea) of uranium dissolution is 205 kJ/mol. The uranium dissolution efficiency of 95.2 % has been achieved with optimized conditions of 250 g/L H2SO4; 1 : 7 (S/L) phase ratio; 250 °C for 7 hours. Finally, the best‐controlling factors were applied for uranium separation from Um Bogma leach liquor to produce a uranium concentrate with 69.985 % uranium purity.

show abstract

“…Lagergren equation Eq. ( 6) was a mathematical description for Pseudo-first-order model (Lagergren 1898; Broujeni et al 2019;Hagag 2020). ( 6) log(q e -q t ) = logq e − k 1 2.303 t where, q t is the mass of uranium adsorbed on KT composite at time mg/g −1 , K 1 pseudo first order constant min −1 .…”

Section: Kinetic Models Of Adsorptionmentioning

confidence: 99%

“…Pseudo-second-order model was described mathematically by Eq. ( 7) (Kumar and Sivanesan 2006;Broujeni et al 2019;Hagag 2020): where: K 2 Pseudo-second-order rate constant (g mg −1 min −1 ), plotting t/qt against t was shown in Fig. (18).…”

Section: Kinetic Models Of Adsorptionmentioning

confidence: 99%

Thermal activation of kaolinite titanium hydroxide composite for uranium adsorption from aqueous solutions

Hagag

Esmaeel

Salem

et al. 2022

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

In the present study, thermally treated kaolinite at 600 ºC was incorporated with titanium hydroxide produced from ilmenite to prepare a novel, low-cost and a promising adsorbent (KT). Different analytical techniques such as FTIR, EDS, SEM were used to determine its structural analysis. Its applicability for uranium uptaking and desorption from its aqueous solutions was investigated by varying controlling conditions including pH, shaking time, initial concentrations, temperature and KT dose weight. Untreated kaolinite showed zero loading capacity and adsorption efficiency towards uranium ions, on the contrary thermal activation and incorporation with Ti(OH)4 improved its performance. Batch results for adsorption experiments showed that loading capacity of (KT) reached 160mgg−1; at pH 5, after only 20 min shaking time. Uranium adsorption process was much closer to a traditional Langmuir adsorption isotherm with a theoretical saturation capacity of 161.3mgg−1. From thermodynamics data, the adsorption process is endothermic in nature which emphasized by elevating temperature has an enhancement effect on uranium adsorption with uptake of 205 mgg−1 at 60 ℃. Uranium adsorption was kinetically fitted with the pseudo-second-order model. KT composite has a high applicability and reusability due to its high resistance to extreme acidity levels.

show abstract

Comparative adsorption study of Th4+ from aqueous solution by hydrothermally synthesized iron and aluminum oxide nanoparticles

Cited by 17 publications

References 47 publications

Selective Capture Mechanism of Radioactive Thorium from Highly Acidic Solution by a Layered Metal Sulfide

Selective Capture Mechanism of Radioactive Thorium from Highly Acidic Solution by a Layered Metal Sulfide

Recovery of uranium from ferruginous Shale mineralization from Um Bogma formation, Egypt, via Duolite ES‐467 chelating resin

Thermal activation of kaolinite titanium hydroxide composite for uranium adsorption from aqueous solutions

Contact Info

Product

Resources

About