Carbon based adsorbents for the removal of U(VI) from aqueous medium: A state of the art review

Fahad, Shah Abdul; Nawab, Md Sadique; Shaida, Mohd Azfar; Verma, Swati; Khan, Mohd Umar; Siddiqui, Vasiuddin; Naushad, Mu.; Saleem, Laiba; Farooqi, Izharul Haq

doi:10.1016/j.jwpe.2022.103458

Cited by 23 publications

(3 citation statements)

References 251 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carbon-based compounds are also commonly used for U extraction from aqueous solutions owing to their exceptional performance in chemical stability, ease of modification, and large surface areas. [27][28][29] Another important issue that needs to be considered is the extraction element ratio of U/V, which is significantly influenced by the type of adsorption materials used. [25][26][27] Further enhancements in materials' adsorption capacity, selectivity, durability, kinetics, and thermodynamics need to be considered for uranium recovery from natural seawater.…”

Section: Nailiang Yangmentioning

confidence: 99%

Enhanced uranium extraction from seawater: from the viewpoint of kinetics and thermodynamics

Shabbir,

Yang,

Wang

2024

Nanoscale

View full text Add to dashboard Cite

show abstract

Section: Nailiang Yangmentioning

confidence: 99%

Enhanced uranium extraction from seawater: from the viewpoint of kinetics and thermodynamics

Shabbir,

Yang,

Wang

2024

Nanoscale

View full text Add to dashboard Cite

show abstract

“…Among these, the adsorption method is preferred due to its efficiency, simplicity, scalability, and ability to reduce health risks . Natural and synthetic adsorbents in use encompass activated alumina, hybrid nanomaterials, transition metal oxides, and ceramic adsorbents. − …”

Section: Introductionmentioning

confidence: 99%

Novel Method for the Arsenic Removal Experiment and Mechanism Analysis

Zhu,

Lin,

Fan

2023

ACS Omega

View full text Add to dashboard Cite

This study focuses on the hydrothermal synthesis of magnetically activated carbon and its efficacy in As(III) adsorption. The successful incorporation of magnetite nanoparticles within the porous carbon structure was confirmed, enriching the adsorbent's properties. Comprehensive characterization was performed to analyze the pore size distribution, zeta potential at varying pH levels, and thermostability using thermogravimetric analysis. These adsorbents exhibited high As(III) removal efficiency with a uniform pore distribution. The zeta potentials were observed to decrease with an increase in pH, suggesting a relationship between adsorbent charge and pH. Adsorption dynamics were rigorously modeled using pseudo-first-order, pseudo-secondorder, Elovich, and intraparticle diffusion models for different adsorbents labeled as a, b, c, and d. Each adsorbent displayed unique fitted parameters, revealing varied adsorption capabilities. The study further explored the adsorption kinetics and found that the pseudo-second-order kinetics model and the Langmuir model were most appropriate for describing the adsorption process. Adsorption thermodynamics was also fitted to elucidate the underlying adsorption mechanisms. For the a, b, c, and d adsorbents, the pseudo-first-order model, the q e (cal) values for the four adsorbents were 434.2, 418.4, 283.5, and 279.5 μg/g, respectively. Take adsorbent a as an example; the q m values for 298, 303, 308, and 313 K were 702, 673, 605, and 589 μg/g, respectively, and K L values of these temperatures were 0.021, 0.031, 0.018, and 0.009 L/μg, respectively. For the Langmuir model, the R 2 values at the four temperatures were 0.999, 0.978, 0.985, and 0.993, respectively, which indicated that the Langmuir model showed higher fitness. For the Freundlich model, the K L values (L/μg) at the parameters of these temperatures are 432, 409, 328, and 294, respectively. For the Freundlich model, the 1/n values at temperatures of 298, 303, 308, and 313 K are 0.049, 0.045, 0.052, and 0.035, respectively. For the Freundlich model, the R 2 values at parameters of 298, 303, 308, and 313 K are 0.986, 0.989, 0.982, and 0.872, respectively. For the Temkin model, the B values (in J/mol) are 30.93, 0.894, 0.824, and 0.782 at these temperatures, respectively. The K T values (in L/μg) are 1.02 × 10 6 , 0.07 × 10 6 , 0.003 × 10 6 , and 0.002 × 10 6 , respectively. The R 2 values are 0.973, 0.958, 0.972, and 0.894, respectively. In the end, the ΔH, ΔS, and ΔG values for different adsorbents were calculated. Collectively, these findings contribute significant insights into the design and application of magnetically activated carbon adsorbents for effective As(III) removal.

show abstract

“…Among various extraction methodologies developed for uranium capture, the adsorption technique has garnered significant attention due to its cost-effectiveness, straightforward implementation, and impressive efficiency. , To harness the power of this method, the strategic design and fabrication of adsorbents exhibiting stability, rapid kinetics, selectivity, and substantial adsorption capacity serve as fundamental prerequisites . A gamut of adsorption materials, including clays, oxide materials, hydroxyapatite, polymers, graphene oxide, mesoporous silica, carbon materials, and covalent organic frameworks have been explored for uranium separation, − while their applications are often hindered by laborious procedures, sluggish removal rates, and high costs. Metal–organic frameworks (MOFs), as a novel type of porous crystalline materials, have attracted extensive attention due to their expansive surface area, facile tunability, profuse active sites, and ordered pore structure. , These attributes render them exceptional solid-phase adsorbents for radionuclide sequestration, which also facilitates the exploration of structure–function relationships. − So far, numerous strategies have been devised to enhance MOF adsorption performance.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Uranium Removal with a Titanium-Incorporated Zirconium-Based Metal–Organic Framework

Wang,

Xiao,

et al. 2023

Langmuir

View full text Add to dashboard Cite

The urgent need to efficiently and rapidly decontaminate uranium contamination in aquatic environments underscores its significance for ecological preservation and environmental restoration. Herein, a series of titanium-doped zirconium-based metal–organic frameworks were meticulously synthesized through a stepwise process. The resultant hybrid bimetallic materials, denoted as NU-Zr-n%Ti, exhibited remarkable efficiency in eliminating uranium (U (VI)) from aqueous solution. Batch experiments were executed to comprehensively assess the adsorption capabilities of NU-Zr-n%Ti. Notably, the hybrid materials exhibited a substantial increase in adsorption capacity for U (VI) compared to the parent NU-1000 framework. Remarkably, the optimized NU-Zr-15%Ti displayed a noteworthy adsorption capacity (∼118 mg g-1) along with exceptionally rapid kinetics at pH 4.0, surpassing that of pristine NU-1000 by a factor of 10. This heightened selectivity for U (VI) persisted even when diverse ions exist. The dominant mechanisms driving this high adsorption capacity were identified as the robust electrostatic attraction between the negatively charged surface of NU-Zr-15%Ti and positively charged U (VI) species as well as surface complexation. Consequently, NU-Zr-15%Ti emerges as a promising contender for addressing uranium-laden wastewater treatment and disposal due to its favorable sequestration performance.

show abstract

Carbon based adsorbents for the removal of U(VI) from aqueous medium: A state of the art review

Cited by 23 publications

References 251 publications

Enhanced uranium extraction from seawater: from the viewpoint of kinetics and thermodynamics

Enhanced uranium extraction from seawater: from the viewpoint of kinetics and thermodynamics

Novel Method for the Arsenic Removal Experiment and Mechanism Analysis

Enhancing Uranium Removal with a Titanium-Incorporated Zirconium-Based Metal–Organic Framework

Contact Info

Product

Resources

About