Synthesis and characterization of magnetite nanoparticles using waste iron ore tailings for adsorptive removal of dyes from aqueous solution

Giri, S.K.; Das, Nigamananda; Pradhan, Guru C.

doi:10.1016/j.colsurfa.2011.08.052

Cited by 160 publications

(44 citation statements)

References 36 publications

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“…Iron oxides nanoparticles with a particle average size of 20-100 nm have attracted the researcher's attention due to their excellent magnetic properties, high surface area, high adsorption capacity, nanoparticle size and easy magnetic separation of solids after adsorption [43].The behaviour of magnetic nanoparticles strongly depends on size, surface chemistry, state of aggregation and preparation methods. Co-precipitation, mechanical attrition and hydrothermal methods are used in the preparation metal oxides.…”

Section: Metal Oxides Nanoparticlesmentioning

confidence: 99%

Review on Dye Removal from Its Aqueous Solution into Alternative Cost Effective and Non-Conventional Adsorbents

Dawood¹,

Sen

2013

Journal of Chemical and Process Engineering

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Dyes are complex organic compounds which are used by various industries to colour their products. These dyes are purged from various industrial sources such as textile, cosmetic, paper, leather, rubber and printing industries. Wastewater effluents contain dyes which may cause potential hazards to the environment. Some of these dyes are toxic, carcinogenic and can cause skin and eye irritation. Therefore, many researchers have been studied the effectiveness of dyes removal from aqueous solution by different separation methods. Different separation techniques have been used for the treatment of dye-bearing wastewater such as adsorption, coagulation/flocculation, advanced oxidation technologies, ozonation, and membrane-filtration, aerobic and anaerobic degradation. All dye separation techniques have their own limitation in terms of design, operation efficiency and total cost. This review paper provides extensive literature information about dyes, its classification and toxicity together with various treatment methods into dye adsorption characteristics of several non-conventional cost effective sustainable adsorbents. The mechanism and the effects of various physio-chemical process parameters on dye adsorption are presented here.

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Section: Metal Oxides Nanoparticlesmentioning

confidence: 99%

Review on Dye Removal from Its Aqueous Solution into Alternative Cost Effective and Non-Conventional Adsorbents

Dawood¹,

Sen

2013

Journal of Chemical and Process Engineering

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“…Therefore, the second weight loss of 7.01% and the exothermic peak at 305°C is corresponding to these HMT molecules (calculated loss value is 7.04%). The third weight loss of 11.66% and the exothermic peak at 541°C is related to the decomposition of three MB molecules attracted to 5 International Journal of Photoenergy the HMT-STA hybrid, the oxidation of the carbon [28], and the decomposition of silicotungstate to WO 3 and SiO 2 at about 550°C [41] (calculated loss value is 11.68%). The whole weight loss of 23.86% is compatible with the calculated value (24.00%).…”

Section: Resultsmentioning

confidence: 99%

“…Consequently, treatment of dye-contaminated wastewaters with decontamination processes is necessary before their discharge. Adsorption of dyes on inexpensive and efficient solid supports especially on activated carbon (AC) and AC composites is one of the simplest and most economical methods for removing dyes from wastewater [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]; however, the disposal of residues is still a problem. Advanced oxidation processes (AOPs) are widely accepted as an efficient method for dye-contaminated wastewater due to complete degradation of organics into carbon dioxide and water.…”

Section: Introductionmentioning

confidence: 99%

Selective Adsorption and Photocatalytic Degradation of Dyes Using Polyoxometalate Hybrid Supported on Magnetic Activated Carbon Nanoparticles under Sunlight, Visible, and UV Irradiation

Taghdiri

2017

International Journal of Photoenergy

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In this study, magnetic activated carbon (MAC) nanoparticles were coated with an organic hybrid of silicotungstic acid that makes MAC suitable for adsorption and photocatalytic degradation of dyes. The prepared composite was characterized by Fourier transform infrared spectroscopy, powder X-ray diffraction, thermal analyses, scanning electron microscopy, vibrating sample magnetometer, and N 2 adsorption-desorption isotherms. Dye adsorption and photocatalytic properties of composite were examined by studying the decolorization of model dyes methylene blue (MB), methyl orange (MO), rhodamine B (RhB), and their mixture solutions. The results show that the composite can selectively adsorb MB molecules from binary mixtures of MB/MO or MB/RhB, and its adsorption capacity is enhanced as compared with the MAC. The composite is also, unlike MAC, a good photocatalyst in the degradation of dyes under sunlight, visible, and UV irradiation and can be separated by magnet, recovered and reused. Removal is via combination of adsorption and then photocatalytic degradation through direct oxidation by composite or indirect oxidation by• OH radicals. While the sunlight is not able to degrade alone MO and RhB solution in the presence of composite, it degrades the MO and RhB mixed with MB solution.

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“…Many researchers utilize this waste for its possible applications. Some researchers have synthesized magnetite nanoparticles by various methods using Fecontaining solution extracted from the iron ore tailing [1][2][3][4][5]. Yu et al [6] have successfully synthesized highly ordered mesoporous materials by hydrothermal method using sodium silicate extracted from iron ore tailing as silica source.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Iron Ore Tailing for the Preparation of ?-Fe2O3 nanoparticles

Xu¹,

Deng²

2018

Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)

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Abstract-The objective of this study was to recover the iron from the iron ore tailing and convert it into a value-added products like α-Fe 2 O 3 nanoparticles with photocatalytic properties. Iron was extracted from the iron ore tailing by using acid leaching method and the leaching parameters were discussed. When the amount and concentration of HCl, leaching reaction temperature and time were fixed at 21.4ml, 30%, 100°C and 1.5h, respectively, the iron recovery reached 99.63%. Mesoporous α-Fe 2 O 3 nanoparticles were successfully prepared by a facile precipitation method using the acid leaching solution as the iron source. The α-Fe 2 O 3 samples were characterized by XRD, SEM, N 2 adsorption and UV-Vis spectroscopy. The crystallite size of α-Fe 2 O 3 was about 36nm and the specific surface area was 46.03m 2 /g. The mesoporous α-Fe 2 O 3 prepared from iron ore tailing displayed better photocatalytic activity for the degradation of methylene blue, which was similar to that of α-Fe 2 O 3 prepared from pure agent.

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Synthesis and characterization of magnetite nanoparticles using waste iron ore tailings for adsorptive removal of dyes from aqueous solution

Cited by 160 publications

References 36 publications

Review on Dye Removal from Its Aqueous Solution into Alternative Cost Effective and Non-Conventional Adsorbents

Review on Dye Removal from Its Aqueous Solution into Alternative Cost Effective and Non-Conventional Adsorbents

Selective Adsorption and Photocatalytic Degradation of Dyes Using Polyoxometalate Hybrid Supported on Magnetic Activated Carbon Nanoparticles under Sunlight, Visible, and UV Irradiation

Utilization of Iron Ore Tailing for the Preparation of ?-Fe2O3 nanoparticles

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