Selective adsorption of uranium from aqueous solutions using activated carbon prepared from charcoal by chemical activation

Kütahyalı, Ceren; Eral, Meral

doi:10.1016/j.seppur.2004.01.011

Cited by 164 publications

(48 citation statements)

References 11 publications

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“…From this point of view, adsorbed Fe 3+ on PA-MPC has role in the adsorption process. These results is in agree Kütahyalı and Eral [29], where they found that Fe 3+ has a positive effect on the uranium adsorption by using chemical modified activated carbon.…”

Section: Adsorption Kineticssupporting

confidence: 90%

Preparation of Poly-Aniline-Magnetic Porous Carbon Composite for Using as Uranium Adsorbent

Gado¹

2017

AJMSP

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Abstract:Rice husk as one of the agricultural by-products has been used as a starting material for the production of porous carbon (PC), the obtained porous carbon has been modified by poly aniline and magnetized to form poly aniline magnetic porous carbon composite (PA-MPC). The prepared PA-MPC has been characterized and examined for uranium adsorption from its pregnant solutions. The effect of the controlling parameters (pH; Contact time, temperature, initial uranium concentration, and adsorbent dosage) have been optimized. The obtained results indicate that the adsorption is pH dependant. The equilibrium data were well described by langmuir isotherm with theoretical capacity 94.3 mg/l at room temperature. These results demonstrate the potential use of this adsorbent for uranium ions removal from its pregnant solutions.

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Section: Adsorption Kineticssupporting

confidence: 90%

Preparation of Poly-Aniline-Magnetic Porous Carbon Composite for Using as Uranium Adsorbent

Gado¹

2017

AJMSP

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“…Many methods have been tried to solve this problem, such as coprecipitation, membrane filtration, and ion exchange etc. [3][4][5]. Sorption is preferred because of its low cost, simplicity of design and operation, especially application for effluents with moderate and low concentrations [6,7].…”

Section: Introductionmentioning

confidence: 99%

Preparation of montmorillonite@carbon composite and its application for U(VI) removal from aqueous solution

Zhang

Chen

et al. 2015

Applied Surface Science

144

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“…The adsorption isotherms of UO 2 2+ exhibit Langmuir behavior which indicates a monolayer adsorption. The maximum sorption capacity (Q o ) and monomo- 6 Langmuir adsorption isotherm of sorption U(VI) onto composite adsorbent lecular capacity (b) are found to be 1.68×10 −3 mmol/g and 23.05 L/g for UO 2 2+ at 30°C. The correlation coefficient values of Langmuir, Freundlich, and D-R models given in Table 1 indicated that Langmuir was the most suitable (R 2 =0.9978).…”

Section: A Linear Form Of This Equation Ismentioning

confidence: 97%

“…Contribution in this regard has been made by many researchers, who have utilized a number of materials, such as activated charcoal [6], kaolinite [7], bentonite [8,9], smectites [10], goethite [11], coir pith [12], biomass [13], activated carbon [14], and polymeric materials [15]. Activated carbon is the most popular adsorbent and has been used with great success.…”

Section: Introductionmentioning

confidence: 99%

Adsorption and thermodynamics studies of U(VI) by composite adsorbent in a batch system

Donat

2010

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The adsorption of U(VI) from aqueous solutions onto composite adsorbent (algistar) has been studied using a batch adsorber. The parameters that affect the U(VI) sorption, such as contact time, solution pH, initial U(VI) concentration, and temperature, have been investigated and optimized conditions determined. Equilibrium isotherm studies were used to evaluate the maximum sorption capacity of composite adsorbent, and experimental results showed this to be 43.10 mg/g. The adsorption patterns of metal ions on composite adsorbent followed the Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. The Freundlich, Langmuir, and D-R models have been applied, and the data correlate well with Langmuir model, and that the sorption is physical in nature (the sorption energy E ads =12.90 kJ/mol). Thermodynamic parameters (ΔH ads o =−41.08 kJ/mol, ΔS ads o =−68.00 J/molK, ΔG ads (298.15 K)=−20.81 kJ/mol) showed the exothermic heat of adsorption and the feasibility of the process. The results suggested that the composite adsorbent is suitable as a sorbent material for recovery and biosorption/adsorption of uranium ions from aqueous solutions.

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Selective adsorption of uranium from aqueous solutions using activated carbon prepared from charcoal by chemical activation

Cited by 164 publications

References 11 publications

Preparation of Poly-Aniline-Magnetic Porous Carbon Composite for Using as Uranium Adsorbent

Preparation of Poly-Aniline-Magnetic Porous Carbon Composite for Using as Uranium Adsorbent

Preparation of montmorillonite@carbon composite and its application for U(VI) removal from aqueous solution

Adsorption and thermodynamics studies of U(VI) by composite adsorbent in a batch system

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