Preparation and characterization of nano-magnetic cellulose with fast kinetic properties towards the adsorption of some metal ions

Donia, Ahmed M.; Atia, Asem A.; Abouzayed, Fatma I.

doi:10.1016/j.cej.2011.08.034

Cited by 156 publications

(53 citation statements)

References 46 publications

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“…The amine content in the sorbent was estimated using a volumetric method as follows [21]: 30 mL of 0.05 M HCl solution was added to 0.1 g of material and conditioned for 15 h on a reciprocal shaker. The residual concentration of HCl was estimated through titration against 0.05 M NaOH solution and phenolphthalein as indicator.…”

Section: Preparation Of Sorbentmentioning

confidence: 99%

“…Being an effective separation technique, solid-phase extraction (SPE) has risen to the forefront among the processes that have been extensively carried out in the field of separation and analysis [19,20]. In addition, SPE provides alternative opportunities not only for the removal of heavy metals from wastewater [1][2][3][4] but also for the recovery of precious or strategic metals [8,21], including uranium [14,19]. SPE has a number of advantages over other processes: minimal solvent use, flexibility, high concentration factor that made the technique especially attractive for separation and removal of metal ions over the last decade [9,22].…”

Section: Introductionmentioning

confidence: 99%

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Dy(III) recovery from dilute solutions using magnetic-chitosan nano-based particles grafted with amino acids

et al. 2015

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Magnetic-chitosan nano-based particles were successfully prepared by a simple one-pot co-precipitation method before being functionalized with three different amino acid groups (i.e., alanine, serine, and cysteine) using epichlorohydrin as the linking agent. The structural and functional characteristics of the nanosorbents were investigated by elemental analysis, Fourier transform infrared spectrometer, X-ray diffraction, TEM, and vibrating sample magnetometry. The sorption properties of these materials were tested for Dy(III) recovery from aqueous solution: pH effect, uptake kinetics, and sorption isotherms were investigated. Sorbent particles are super-paramagnetic and their size is in the range of 15-40 nm. Kinetic profiles are successfully modeled with the pseudo secondorder rate equation. The Langmuir and the Dubinin-Radushkevich equations fit well-sorption isotherms. The maximum sorption capacities at pH 5 (optimum pH, and at T: 27 ± 1°C) are close to 14.8, 8.9, and 17.6 mg Dy g -1 for alanine, serine, and cysteine type, respectively. Cationic species RE(III) in aqueous solution appear to be sorbed by combined chelation and anion-exchange mechanisms. The sorption process begins at low-metal concentration by a physical monolayer sorption at low ion concentration before metal ions can be sorbed at higher metal concentration by coordination. The values of the thermodynamic parameters DG°and DH°indicate the spontaneous and endothermic nature of the mechanism, while the positive values of DS°show that during the sorption process the randomness increases. Finally, the sorbent can be efficiently regenerated using acidified thiourea: the amount of Dy(III) sorbed is hardly reduced, at least during the first four sorption/desorption cycles.

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Section: Preparation Of Sorbentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dy(III) recovery from dilute solutions using magnetic-chitosan nano-based particles grafted with amino acids

et al. 2015

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“…An excellent adsorbent should generally possess high surface area and short adsorption equilibrium time, so that it can be used to remove high amount of pollutant in shorter time (Nassar 2010). Up to now, numerous adsorbents have been developed including activated carbon (Liu et al 2009), chitosan and chitosan modified (Yuwei and Jianlong 2011;Li et al 2011;Monier et al 2012), lignocelluloses (Donia et al 2011), functionalized polymers (Xiao et al 2012;Huang et al 2013), and so on. However, most of these adsorbents are limited by the difficulties of separation and regeneration.…”

Section: Introductionmentioning

confidence: 99%

Removal of bisphenol A and some heavy metal ions by polydivinylbenzene magnetic latex particles

Marzougui

Chaabouni

Elleuch

et al. 2015

Environ Sci Pollut Res

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In this study, magnetic polydivinylbenzene latex particles MPDVB with a core-shell structure were tested for the removal of bisphenol A (BPA), copper Cu(II), lead Pb(II), and zinc Zn(II) from aqueous solutions by a batch-adsorption technique. The effect of different parameters, such as initial concentration of pollutant, contact time, adsorbent dose, and initial pH solution on the adsorption of the different adsorbates considered was investigated. The adsorption of BPA, Cu(II), Pb(II), and Zn(II) was found to be fast, and the equilibrium was achieved within 30 min. The pH 5-5.5 was found to be the most suitable pH for metal removal. The presence of electrolytes and their increasing concentration reduced the metal adsorption capacity of the adsorbent. Whereas, the optimal pH for BPA adsorption was found 7, both hydrogen bonds and π-π interaction were thought responsible for the adsorption of BPA on MPDVB. The adsorption kinetics of BPA, Cu(II), Pb(II), and Zn(II) were found to follow a pseudo-second-order kinetic model. Equilibrium data for BPA, Cu(II), Pb(II), and Zn(II) adsorption were fitted well by the Langmuir isotherm model. Furthermore, the desorption and regeneration studies have proven that MPDVB can be employed repeatedly without impacting its adsorption capacity.

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“…Subsequently, the obtained PANI-NCC was washed with ethanol (99 %, Fischer scientific), then sonicated, and finally dried at ambient temperature. The quantitative estimation of amine functionalities was attained by volumetric method according to the procedure presented previously (Donia et al 2012). …”

Section: Fabrication Of Polyaniline Impregnated Nanocellulose Composimentioning

confidence: 99%

Site-specific functionalization for chemical speciation of Cr(III) and Cr(VI) using polyaniline impregnated nanocellulose composite: equilibrium, kinetic, and thermodynamic modeling

2015

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Site-specific functionalizations are the emergent attention for the enhancement of sorption latent of heavy metals. Limited chemistry has been applied for the fabrication of diafunctionalized materials having potential to tether both environmentally stable oxidation states of chromium (Cr(III) and Cr(VI). Polyaniline impregnated nanocellulose composite (PANI-NCC) has been fabricated using click chemistry and explored for the removal of Cr(III) and Cr(VI) from hydrological environment. The structure, stability, morphology, particle size, surface area, hydrophilicity, and porosity of fabricated PANI-NCC were characterized comprehensively using analytical techniques and mathematical tools. The maximum sorption performance of PANI-NCC was procured for (Cr(III): 47.06 mg g -1 ; 94.12 %) and (Cr(VI): 48.92 mg g -1 ; 97.84 %) by equilibrating 0.5 g sorbent dose with 1000 mL of 25 mg L -1 chromium conc. at pH 6.5 and 2.5 for Cr(III) and Cr(VI), respectively. The sorption data showed a best fit to the Langmuir isotherm and pseudosecond-order kinetic model. The negative value of DG°(-8.59 and -11.16 kJ mol -1 ) and DH°(66.46 9 10 -1 and 17.84 9 10 -1 kJ mol -1 ), and positive value of DS°(26.66 and 31.46 J mol -1 K -1 ) for Cr(III) and Cr(VI), respectively, reflect the spontaneous, feasibility, and exothermic nature of the sorption process. The application of fabricated PANI-NCC for removing both the forms of chromium in the presence of other heavy metals was also tested at laboratory and industrial waste water regime. These findings open up new avenues in the row of high performance, scalable, and economic nanobiomaterial for the remediation of both forms of chromium from water streams.

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Preparation and characterization of nano-magnetic cellulose with fast kinetic properties towards the adsorption of some metal ions

Cited by 156 publications

References 46 publications

Dy(III) recovery from dilute solutions using magnetic-chitosan nano-based particles grafted with amino acids

Dy(III) recovery from dilute solutions using magnetic-chitosan nano-based particles grafted with amino acids

Removal of bisphenol A and some heavy metal ions by polydivinylbenzene magnetic latex particles

Site-specific functionalization for chemical speciation of Cr(III) and Cr(VI) using polyaniline impregnated nanocellulose composite: equilibrium, kinetic, and thermodynamic modeling

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