Efficient Removal of Cobalt(II) and Strontium(II) Metals from Water using Ethylene Diamine Tetra‐acetic Acid Functionalized Graphene Oxide

Amer, H.A.; Moustafa, Wafaa M.; Farghali, Ahmed A.; Rouby, Waleed M. A. El; Khalil, Waleed F.

doi:10.1002/zaac.201700318

Cited by 31 publications

(10 citation statements)

References 39 publications

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“…Jang et al (2018) synthesized a three-dimensional barium-sulfate-impregnated reduced GO (rGO) aerogel using a self-assembling hydrothermal method to remove strontium ions from aqueous solutions and achieved an adsorption capacity of 233 mg/g [12]. Khalil et al (2017) used EDTA functionalized GO to remove cobalt and strontium from an aqueous solution with a capacity reaching 197 and 158 mg/g for cobalt and strontium, respectively [13]. Xing et al (2019) studied the adsorptive removal of strontium ions from an aqueous solution by GO, and the maximum adsorption capacity was 138 mg/g.…”

Section: Introductionmentioning

confidence: 99%

Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide

2021

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In this study, graphene oxide (GO) was synthesized using Hummers method. The synthesized GO was characterized using field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Fourier transformed infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) nitrogen adsorption. The analyses confirmed the presence of oxygen functional groups (C=O and C-O-C) on the GO surface. These oxygen functional groups act as active sites in the adsorption Sr (II). The BET analysis revealed the surface area of GO of 232 m2/g with a pore volume of 0.40 cm3/g. The synthesized GO was used as an adsorbent for removing Sr (II) from aqueous solutions. The adsorption equilibrium and kinetic results were consistent with the Langmuir isotherm model and the pseudo-second-order kinetic model. A maximum strontium adsorption capacity of 131.4 mg/g was achieved. The results show that the GO has an excellent adsorption capability for removing Sr (II) from aqueous solutions and potential use in wastewater treatment applications.

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Section: Introductionmentioning

confidence: 99%

Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide

2021

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“…This problem has made scientists think of reusing water again after treatment. Therefore, many methods of treatment have been used such as filtration [32], biodegradation [33], adsorption [34], and photocatalytic degradation [35] of contaminant especially the organic molecules. Among these methods, adsorption is the simplest, cheapest, and most versatile technique for treating water pollutants [30,36].…”

Section: Selective Adsorption and Degradation Over Decorated Titanatementioning

confidence: 99%

Selective Photodegradation Using Titanate Nanostructures

Zaki¹,

Rouby²

2019

Photocatalysts - Applications and Attributes

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Adsorption and photocatalytic degradation are considered as the most important ways of treating water from organic compounds. It would be very useful if the adsorption and photocatalytic properties are combined in the same catalyst used in the treatment. Titania is one of the best well-known photocatalysts. However, due to its poor selectivity, it is unfavorable for photocatalytic removal of highly toxic low-level organic pollutants in wastewater in the presence of other less toxic high-level pollutants. Recent trials to introduce selectivity for titania have been achieved via controlling the catalyst morphology or by modifying the catalyst surface. This chapter summarizes the control of selectivity of titanate nanostructures toward adsorption and/or photocatalytic degradation of toxic organic dyes. In the first part, the effect of morphologies of titanites on selective photocatalytic degradation of three food dyes (color yellow sunset, red allura, and red carmoisine) was discussed. In changing the morphology of titanite, each dye is being preferably adsorbed by one morphology and decomposing more rapidly. In the second part, the selective adsorption and/or photocatalytic degradation of methylene blue dye from mixed dye solution using sodium titanate (NaTNT), cobalt-doped titanate nanotubes (co-doped TNT), and the decorated one with gold nanoparticles has been discussed.

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“…In order to improve CS's adsorption capacity, GO and EDTA, added to CS with primary amino groups, are easily functionalized. [20][21][22] In recent years, nanocellulose has emerged as an attractive carbon material due to its low cost and biodegradable nature. 23 Tetramethyl-1,piperidinyloxy (TEMPO) oxidation is one of the most effective methods of generating cellulose nanofibers, which can disperse at nanoscale in a pure aqueous medium.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the number of surface functional groups may increase, affecting heavy metal adsorption. In order to improve CS's adsorption capacity, GO and EDTA, added to CS with primary amino groups, are easily functionalized 20–22 . In recent years, nanocellulose has emerged as an attractive carbon material due to its low cost and biodegradable nature 23 .…”

Section: Introductionmentioning

confidence: 99%

Effective adsorption of cationic methylene blue dye on cellulose nanofiber/graphene oxide/silica nanocomposite: Kinetics and equilibrium

Abou-Zeid

Owda

Dacrory

2022

J of Applied Polymer Sci

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Development of new adsorbent based on anionic silica precursor, cellulose nanofiber (CNF), and graphene oxide (GO) has prepared via ionic reaction followed by a sol-gel process. Different instruments were used for the characterization of the nanocomposite: Fourier transform infrared spectrometer (FTIR), X-ray diffraction (XRD), scanning electronic microscope (SEM), Thermal gravimetric analysis (TGA), and transmission electron microscope (TEM). Methylene blue (MB) adsorption on CNF/GO and CNF/GO/silica nanocomposites achieved during 60 min. A pseudo-second-order kinetic model was fitted to the adsorption process, with a maximum adsorption capacity of 588.23 and 625 mg/g in a slightly alkaline solution, respectively. It was found that the adsorption capacity of CNF/GO and CNF/GO/silica could regenerate the MB up to four cycles with slight decrease from 98 to 93%. This study showed that CNF/GO and CNF/GO/silica nanocomposites are effective adsorbents for organic pollutants in wastewater.

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Efficient Removal of Cobalt(II) and Strontium(II) Metals from Water using Ethylene Diamine Tetra‐acetic Acid Functionalized Graphene Oxide

Cited by 31 publications

References 39 publications

Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide

Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide

Selective Photodegradation Using Titanate Nanostructures

Effective adsorption of cationic methylene blue dye on cellulose nanofiber/graphene oxide/silica nanocomposite: Kinetics and equilibrium

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