Removal of aqueous uranyl ions by magnetic functionalized carboxymethylcellulose and adsorption property investigation

Gao, Yonghui; Yuan, Yali; Ma, Dandan; Li, Le; Li, Yuhui; Xu, Wenhui; Tao, Wen Hong

doi:10.1016/j.jnucmat.2014.06.028

Cited by 35 publications

(9 citation statements)

References 33 publications

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“…Uranium is one of the most hazardous radionuclides because of its high toxicity and radioactivity to human [4], making it necessary to be removed from wastewater [5]. Under ordinary environmental conditions, uranium (VI) exists in its aqueous hexavalent form as UO 2 2þ , which provides clues for the entrapment of the U(VI) ions onto solid materials for effective separation and enrichment [6].…”

Section: Introductionmentioning

confidence: 99%

High performance of phosphate-functionalized graphene oxide for the selective adsorption of U(VI) from acidic solution

Liu

Wang

et al. 2015

Journal of Nuclear Materials

167

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Section: Introductionmentioning

confidence: 99%

High performance of phosphate-functionalized graphene oxide for the selective adsorption of U(VI) from acidic solution

Liu

Wang

et al. 2015

Journal of Nuclear Materials

167

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“… Adsorption capacity (mg/g) Sorbents (ref.) Adsorption capacity (mg/g) activated carbon 41 10.47 PA-SMM 29 76.9 multiwalled carbon nanotubes 42 24.9 Phosphoric acid modified MS material 43 66.7 activated charcoal 44 28.8 Sal-APS-FMNPs 45 49.0 Fe 3 O 4 @SiO 2 46 52.4 PTFG-4 47 140.68 GO 48 97.5 Ni0.6Fe 2 .4O 4 particles 49 189.04 chitosan grafted MWCNT’s 50 39.2 PFG MSs (Present study) 207.595 NH 3 -GO 51 80.13 …”

Section: Resultsmentioning

confidence: 99%

Synthesis of enhanced phosphonic functional groups mesoporous silica for uranium selective adsorption from aqueous solutions

Sarafraz

Minuchehr

Alahyarizadeh

et al. 2017

Sci Rep

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Enhanced phosphonic functional group (PFG)-based mesoporous silicas (MSs) were synthesized by hydrothermal method for uranium [U(VI)] selective adsorption from aqueous solutions. Considering that PFGs are directly related to U(VI) adsorption, the main idea of this research was to synthesize enhanced PFG-MSs and consequently enhance U(VI) adsorption. We synthesized two kinds of MSs based on acetic and phosphoric acids at weakly acidic pH, which allows high-loading phosphonic functionality. The main sodium and phosphonic functionality sources were sodium metasilicate and diethylphosphatoethyltriethoxysilane (DPTS). Adsorption experiment results exhibit enhanced U(VI) adsorption capacity from 55.75 mg/g to 207.6 mg/g for acetic and phosphoric acids, respectively. This finding was due to the enhancement of PFGs by phosphoric acids. The highest adsorption selectivity was 79.82% for U(VI) among the six different elements, including Pb, As, Cu, Mo, Ni, and K. Structural characterization of the samples was performed by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Brunauer–Emmett–Teller analysis methods. Element concentrations were measured by inductively coupled plasma optical emission spectrometry. Several parameters affecting adsorption capacity, including pH, contact time, initial U(VI) concentration and solution volume, and adsorbent concentration, were also investigated.

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“…Then, the suspension was centrifuged and 0.5 mL supernatant was removed for uranyl ions determination. The quantitative determination of uranyl ions was performed by visible spectrophotometer using Arsenazo III as a chromogenic agent at a wavelength of 652 nm [31]. All the experiments were performed in triplicate.…”

Section: Characterizationmentioning

confidence: 99%

Study on adsorption characteristics of uranyl ions from aqueous solutions using zirconium hydroxide

Liu

Wang

Jiang

et al. 2015

J Radioanal Nucl Chem

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The removal of uranyl ions from aqueous solutions using Zr(OH) 4 Á3.35H 2 O (ZH) as adsorbent was investigated using a batch adsorption technique. The maximum removal rate was found as 451.7 mg UO 2 2? Ág -1 ZH. The adsorption capacity and adsorption rate of the calcinated products gradually decreases with increasing calcination temperature. The hydroxyl groups in the zirconium hydroxide play an important role for the adsorption uranyl ions, which agree well with the thermogravimetric analysis of zirconium hydroxide for completely dehydration at 700°C. The observed data shows that the adsorption process is dependent on surface complexation mechanism.

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Removal of aqueous uranyl ions by magnetic functionalized carboxymethylcellulose and adsorption property investigation

Cited by 35 publications

References 33 publications

High performance of phosphate-functionalized graphene oxide for the selective adsorption of U(VI) from acidic solution

High performance of phosphate-functionalized graphene oxide for the selective adsorption of U(VI) from acidic solution

Synthesis of enhanced phosphonic functional groups mesoporous silica for uranium selective adsorption from aqueous solutions

Study on adsorption characteristics of uranyl ions from aqueous solutions using zirconium hydroxide

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