Cellulose and chitosan derivatives for enhanced sorption of erbium(III)

El‐Magied, Mahmoud O. Abd; Galhoum, Ahmed A.; Atia, Asem A.; Tolba, Ahmad A.; Maize, Mai; Vincent, Thierry; Guibal, Eric

doi:10.1016/j.colsurfa.2017.05.031

Cited by 64 publications

(32 citation statements)

References 89 publications

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“…The shapes of OH and CH bonds in the bands at 3390 and 2900 cm –1 were slightly enhanced; this might have been due to the stretching vibrations of amine (NH). It was obvious that a new band appearing around 1430 cm –1 could be assigned to the primary and secondary amine groups, as reported elsewhere . All of the previously mentioned results indicated that TEPA was successfully grafted onto the cellulose backbone after amination.…”

Section: Resultssupporting

confidence: 81%

Preparation and characterization of amphoteric cellulose–montmorillonite composite beads with a controllable porous structure

Xie

Pan

Xiao

et al. 2019

J of Applied Polymer Sci

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Conventional amphoteric and porous materials are often synthetic and polymer based; this tends to raise environmental concerns because of their poor biodegradability. To address this issue, novel natural-polymer-or amphoteric-modified cellulose and MOt (ACeOMt) composite beads with a typical mesoporous structure were developed in this study. These green-based porous beads, consisting of regenerated bagasse cellulose and oxalic acid modified montmorillonite (OMt), were successfully prepared by a facile coagulation method with fine calcium carbonate as a pore-forming agent. The beads with the best sphericity were obtained at a 1:1 weight ratio of cellulose to OMt. Scanning electron microscopy observation showed that ACeOMt possessed a smooth surface with abundant macropores. X-ray diffraction and thermogravimetric analysis characterizations demonstrated the success of the modification of montmorillonite and cellulose. The results of Brunauer-Emmett-Teller analysis indicate the presence of a typical mesoporous structure in the composite with a relatively high specific surface area. The resulting ACeOMt are expected to be biodegradable, nonhazardous, and applicable for various uses, including adsorption, chromatography, and soil remediation.

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Section: Resultssupporting

confidence: 81%

Preparation and characterization of amphoteric cellulose–montmorillonite composite beads with a controllable porous structure

Xie

Pan

Xiao

et al. 2019

J of Applied Polymer Sci

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“…The researchers have announced some chemical and physical methods to remove dye such as coagulation, flocculation, adsorption, photodecomposition and filtration [2][3]. Due to the low cost and high efficiency in removing the various dyes, the adsorption method is so appropriate [4].…”

Section: -Introductionmentioning

confidence: 99%

“…Carmine dye is categorized in organic dyes. They are observed as common pollutants of water which can damage the health of human and ecosystems [2][3]. Due to the structure of the CNW, the high adsorption capacity of the CNW was evaluated by carmine dye removal experiments.…”

Section: -Introductionmentioning

confidence: 99%

Investigation of Carmine Dye Removal by Green Chitin Nanowhiskers Adsorbent

2019

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A green adsorbent was evaluated to remove the carmine dye. Chitin nanowhiskers were synthesized via acid hydrolyzed method. The diameter of the synthesized chitin whiskers was about 20 nm and had 200 to 400 nm length. The morphology and chemical structure of the synthesized adsorbent were investigated by Field Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM), Fourier Transform Infrared (FT-IR), X- Ray Diffraction (XRD). The adsorption process parameters of the carmine dye removal were optimized as follow: adsorption time (3 h), initial carmine dye solution concentration (100 ppm), mass loaded of the chitin whiskers suspension 1% weight of chitin nanowhiskers, as an adsorbent (1.4 g). The removal efficiency of the carmine dye adsorption was about 85% which is modified 15% better than the previous researches. The results indicated that carmine dye molecules were absorbed by hydrogen bonding mechanism due to the N-H bond in the chitin nanowhiskers structure.

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“…This implies that the adsorption process proceeds according to the pseudo-second-order kinetics and depends upon the metal ion and active site concentrations. In order to show the effect of the intraparticle diffusion (IPD) on the rate of the adsorption process, the plots between the amount of Zr(IV) and Hf(IV) adsorbed at different time intervals (q t ) and the square root of time (t 0.5 ) were carried out according to IPD model [22][23][24][25].…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…The contents of the flask were shaken on a Vibromatic-384 shaker (Selecta, Barcelona, Spain) at 300 rpm and at room temperature. The residual concentrations of Zr(IV) or Hf(IV) ions were determined spectrophotometrically [21] and were used to calculate the uptake using Equation (1) [22].…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Fabrication of Silica Microspheres (HB/A@SI-MNS) for Hafnium and Zirconium Recovery from Zirconyl Leach Liquor

El‐Magied

Salem

Daher

et al. 2018

Colloids and Interfaces

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This work describes the synthesis of silica microspheres using sodium silicate obtained as a byproduct in the production of Egyptian Rosetta zircon concentrate. The obtained mesoporous silica microspheres were further modified with aminopropyltriethoxy silane and 2,4-Dihydroxybenzaldehyde to produce Schiff's base silica sorbent (HB/A@Si-MNS). HB/A@Si-MNS was used for the selective extraction of hafnium from zircon mineral leach liqueur. The fabrication process and surface properties of HB/A@Si-MNS were confirmed by the means of X-ray Fluorescence (XRF), scanning electron microscop (SEM), energy depressive X-ray (EDX), Fourier-transform infrared spectroscopy (FT-IR), and elemental analysis. The uptake behavior of HB/A@Si-MNS towards Zr(IV) and Hf(IV) ions were studied under different experimental conditions. Adsorption curves indicate that the uptake of Zr(IV) and Hf(IV) on HB/A@Si-MNS is a spontaneous, endothermic monolayer system controlled by intraparticle diffusion. Elution efficiencies were found to be 94% and 98% for Zr(IV) and Hf(IV), respectively. The regenerated HB/A@SI-MNS showed uptake capacity comparable to that of fresh ones over 3 cycles. The results of the extraction of Hf(IV) than Zr(IV) from Rosetta zircon concentrate show that HB/A@SI-MNS has a preferential selectivity towards Hf(IV) than Zr(IV). Therefore, the studied material may be promising for the selective separation of Hf(IV) from Zr(IV).

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Cellulose and chitosan derivatives for enhanced sorption of erbium(III)

Cited by 64 publications

References 89 publications

Preparation and characterization of amphoteric cellulose–montmorillonite composite beads with a controllable porous structure

Preparation and characterization of amphoteric cellulose–montmorillonite composite beads with a controllable porous structure

Investigation of Carmine Dye Removal by Green Chitin Nanowhiskers Adsorbent

Fabrication of Silica Microspheres (HB/A@SI-MNS) for Hafnium and Zirconium Recovery from Zirconyl Leach Liquor

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