Magnesium ferrite nanoparticles as a magnetic sorbent for the removal of Mn2+, Co2+, Ni2+ and Cu2+ from aqueous solution

Иванец, А. И.; Srivastava, Varsha; Roshchina, Marina; Sillanpää, Mika; Prozorovich, Vladimir; Pankov, Vladimir

doi:10.1016/j.ceramint.2018.02.117

Cited by 97 publications

(28 citation statements)

References 26 publications

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“…When the particle diameter (d) is smaller, the specific surface area is higher, which promotes the diffusion of particles in the solution, therefore, it is preferred to use a small size adsorbent [24]. The preparation of iron-based materials (such as CoFe 2 O 4 ) in particular is simple and inexpensive, and it is not necessary to carry out the reaction process under nitrogen environment compared to the preparation process of MnFe 2 O 4 [25,26,27] and F 3 O 4 [28]. The number of hydroxyl groups (M–OH) on the surface of CoFe 2 O 4 (38.1%) was higher than that of Fe 3 O 4 (25.4%).…”

Section: Introductionmentioning

confidence: 99%

Removal of Mercury (II) by EDTA-Functionalized Magnetic CoFe2O4@SiO2 Nanomaterial with Core-Shell Structure

et al. 2019

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In order to reduce the difficulty and risk of operation, decrease the preparation time and improve the adsorption performance of magnetic nano-silicon adsorbent with core-shell structure, a carboxylated CoFe2O4@SiO2 was prepared by EDTA-functionalized method using a safe, mild and simple hydrothermal method. The results show that the prepared material of CoFe2O4@SiO2-EDTA has a maximum adsorption capacity of 103.3 mg/g for mercury ions (Hg(II)) at pH = 7. The adsorption process of Hg(II) is a chemical reaction involving chelation and single-layer adsorption, and follows the pseudo-second-order kinetic and Langmuir adsorption isotherm models. Moreover, the removal of Hg(II) is a spontaneous and exothermic reaction. The material characterization, before and after adsorption, shows that CoFe2O4@SiO2-EDTA has excellent recyclability, hydrothermal stability and fully biodegradable properties. To summarize, it is a potential adsorption material for removing heavy metals from aqueous solutions in practical applications.

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Section: Introductionmentioning

confidence: 99%

Removal of Mercury (II) by EDTA-Functionalized Magnetic CoFe2O4@SiO2 Nanomaterial with Core-Shell Structure

et al. 2019

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“…In the SBAC 100 MgFe pattern, sharp diffraction bands at two (theta) 30.27°, 35.73°, 38.04°, 43.33°, 57.22°, and 62.68° are attributed to (009), (012), (015), (018), (110), and (113) indexed planes, which are very similar to the MgFe/LDH nanoparticles reported by Durrani et al [ 32 ]. The size of the crystallites of SBAC 100 MgFe calculated using the Scherrer formula is 30 nm, which is bigger than that of MgFe nanoparticles [ 33 ]. Besides this, the diffraction band which appeared at 22.84° in the XRD pattern of the SBAC 500 MgFe composite was attributed to the plane (002) of graphitic carbon [ 8 ].…”

Section: Resultsmentioning

confidence: 99%

Magnetic Mg-Fe/LDH Intercalated Activated Carbon Composites for Nitrate and Phosphate Removal from Wastewater: Insight into Behavior and Mechanisms

et al. 2020

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This experimental work focused on the synthesis, characterization, and testing of a unique, magnetically separable, and eco-friendly adsorbent composite material for the advanced treatment and efficient removal of nitrate and phosphate pollutants from wastewater. The MgAl-augmented double-layered hydroxide (Mg-Fe/LDH) intercalated with sludge-based activated carbon (SBAC-MgFe) composites were characterized by FT-IR, XRD, BET, VSM, SEM, and TEM techniques, revealing homogeneous and efficient dispersion of MgFe/LDH within the activated carbon (AC) matrix, a highly mesoporous structure, and superparamagnetic characteristics. The initial solution pH, adsorbent dose, contact time, and temperature parameters were optimized in order to reach the best removal performance for both pollutants. The maximum adsorption capacities of phosphate and nitrate were found to be 110 and 54.5 mg/g, respectively. The competition between phosphate and coexisting ions (Cl−, CO32−, and SO42−) was studied and found to be remarkably lower in comparison with the nitrate adsorption. The adsorption mechanisms were elucidated by kinetic, isotherm, thermodynamic modeling, and post-adsorption characterizations of the composite. Modeling and mechanistic studies demonstrated that physisorption processes such as electrostatic attraction and ion exchange mainly governed the nitrate and phosphate adsorption. The composite indicated an outstanding regeneration performance even after five sequences of adsorption/desorption cycles. The fabricated composite with magnetically separable characteristics can be used as a promising adsorbent for the removal of phosphate and nitrate pollutants from wastewater.

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“…Also, this adsorbent can be quickly separated from the suspension by a magnet due to its magnetic property. [13,14] There are various types of adsorbents, nano-adsorbents, and bio-adsorbents in the literature, which are applied to remove Cr (VI) from wastewater including magnetic Goethite, [4] clay, clay@ MnFe 2 O 4 , [6] Fe 3 O 4 nanoparticles, [9] MgO/Fe 3 O 4 , [15] activated carbon prepared by lotus leaf , [16] magnetite nanospheres, [17] activated carbon/CoFe 2 O 4 , [18] etc.…”

Section: Introductionmentioning

confidence: 99%

Clay/MgFe₂O₄ as a Novel Composite for Removal of Cr (VI) From Aqueous Media

Esmaeili

Hashemi

2020

ChemistrySelect

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In this research, clay was modified by MgFe 2 O 4 nanoparticles and was then used to remove Cr (VI) from aqueous media. The properties of the composite were characterized by several analyses such as Scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), and Energy dispersive Xray (EDX). According to the BET analysis, specific surface area and mean pores size for the clay/MgFe 2 O 4 composite were obtained 71.23 m 2 /g and 96.14°A, respectively, which illustrates that the aforementioned composite had a mesoporous structure. Also, the XRD analysis indicated that the clay/ MgFe 2 O 4 composite had a highly crystalline structure. Moreover, the sorption results indicated that the highest removal efficiency of Cr (VI) ion was obtained 96.05% after 15 min and pH value of 4.5. Furthermore, the maximum sorption capacity by the Langmuir model was determined 217.39 mg/g, which was a significant sorption capacity. Moreover, the reusability of the composite was studied after 8 cycles and the results showed that the composite could remove Cr (VI) with a removal efficiency of 94.55% after 4 times reusing the composite, which indicated a significant property of the adsorbent. Furthermore, the Langmuir isotherm was better fitted with the experimental data. Besides, the thermodynamic study indicated that the sorption of Cr (VI) using the clay/ MgFe 2 O 4 was feasible, spontaneous and endothermic.

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Magnesium ferrite nanoparticles as a magnetic sorbent for the removal of Mn2+, Co2+, Ni2+ and Cu2+ from aqueous solution

Cited by 97 publications

References 26 publications

Removal of Mercury (II) by EDTA-Functionalized Magnetic CoFe2O4@SiO2 Nanomaterial with Core-Shell Structure

Removal of Mercury (II) by EDTA-Functionalized Magnetic CoFe2O4@SiO2 Nanomaterial with Core-Shell Structure

Magnetic Mg-Fe/LDH Intercalated Activated Carbon Composites for Nitrate and Phosphate Removal from Wastewater: Insight into Behavior and Mechanisms

Clay/MgFe₂O₄ as a Novel Composite for Removal of Cr (VI) From Aqueous Media

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Magnesium ferrite nanoparticles as a magnetic sorbent for the removal of Mn2+, Co2+, Ni2+ and Cu2+ from aqueous solution

Cited by 97 publications

References 26 publications

Removal of Mercury (II) by EDTA-Functionalized Magnetic CoFe2O4@SiO2 Nanomaterial with Core-Shell Structure

Removal of Mercury (II) by EDTA-Functionalized Magnetic CoFe2O4@SiO2 Nanomaterial with Core-Shell Structure

Magnetic Mg-Fe/LDH Intercalated Activated Carbon Composites for Nitrate and Phosphate Removal from Wastewater: Insight into Behavior and Mechanisms

Clay/MgFe2O4 as a Novel Composite for Removal of Cr (VI) From Aqueous Media

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Clay/MgFe₂O₄ as a Novel Composite for Removal of Cr (VI) From Aqueous Media