Activated carbon/Fe3O4 nanoparticle composite: Fabrication, methyl orange removal and regeneration by hydrogen peroxide

Huy, Manh; Phan, Ngoc Hoa; Nguyen, T. D.; Pham, Thi Thu Suong; Nguyen, Van Khoa; Vu, Thi Thuy Trang

doi:10.1016/j.chemosphere.2011.07.023

Cited by 241 publications

(68 citation statements)

References 47 publications

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“…Therefore, it is hypothesized that the MG-AC synthesized will present better characteristics for the greater adsorption of contaminants relative to the non-magnetic activated carbon due to its strong magnetism and colloidal property which enables it to be well dispersed in a solution [28]. The objectives of the study are: (a) to synthesize a high surface area AC using palm kernel shells, (b) to prepare MG-AC for the removal of heavy metals from water and (c) to characterize the physical and chemical properties of the prepared AC and MG-AC.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of magnetic activated carbon developed from palm kernel shells

Anyika

Asri

Majid

et al. 2017

Nanotechnol. Environ. Eng.

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Magnetic activated carbon (MG-AC), a solid product made by dispersing magnetic substrates on AC, is gaining attention for the removal of heavy metals from wastewater due to its favorable physico-chemical properties such as enhanced surface area and magnetic properties, respectively. However, the effects of two contrasting substrates, i.e., metal solution and metal particles, for the synthesis of MG-AC to obtain enhanced magnetic property have not been considered. The MG-AC was prepared by incorporating Fe 3 O 4 into the AC from two different sources of iron: Fe 3 O 4 extracted from electric arc furnace slag and from a ferric chloride/ferrous sulfate solution, to produce magnetic palm kernel shell from slag (MG-PKSS) and magnetic palm kernel shell from iron suspension (MG-PKSF), respectively. The adsorbent samples were characterized using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis, X-ray diffraction, electron microscopy, i.e., SEM and FESEM, energy-dispersive X-ray, nitrogen adsorption, vibrating sample magnetometer. The results showed that the MG-PKSF had a greater BET surface area of 257 m 2 g -1 , a pore volume of 0.1124 cc g -1 and higher magnetic properties with a magnetic saturation of 49.55 emu g -1 relative to the MG-PKSS. The FTIR spectrum of the MG-PKSF illustrated the intense OH bending at 1629 cm -1 which can be attributed to the presence of oxygen in the samples. The absorption bands at 1093 and 579 cm -1 indicated the presence of C-O stretching and metal-oxygen (M-O) bands due to the interaction of iron and oxygen. Therefore, the MG-PKSF presented better characteristics for heavy metal removal from wastewater relative to the MG-PKSS, thereby suggesting that the raw material (metal solution) for impregnation played a crucial role in enhancing the quality of the MG-AC.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of magnetic activated carbon developed from palm kernel shells

Anyika

Asri

Majid

et al. 2017

Nanotechnol. Environ. Eng.

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“…These adsorbents could be regenerated using hydrogen peroxide and re-used several times. Iron leaching was very low at pH over 3 [106].…”

Section: Applications In Azo and Antraquinonic Dyes Removalmentioning

confidence: 97%

Nanosized magnetite in low cost materials for remediation of water polluted with toxic metals, azo- and antraquinonic dyes

Horst

Lassalle

Ferreira

2015

Front. Environ. Sci. Eng.

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Nanosized magnetite has emerged as an adsorbent of pollutants in water remediation. Nanoadsorbents include magnetic iron oxide and its modifiers/ stabilizers, such as carbon, silica, clay, organic moieties (polymers, aminoacids, and fatty acids) and other inorganic oxides. This review is focused on the recent developments on the synthesis and use of magnetic nanoparticles and nanocomposites in the treatment of contaminated water. The emphasis is on the influence of the iron oxide modifiers on some properties of interest such as size, BET area, and magnetization. The characteristics of these nanomaterials are related to their ability to eliminate heavy metal ions and dyes from wastewater. Comparative analysis of the actual literature was performed aiming to present the magnetic material, its preparation methodology and performance in the elimination of the selected pollutants. Vast information has been properly summarized according to the materials, their properties and preferential affinity for selected contaminants. The mechanisms governing nanomaterial's formation as well as the interactions with heavy metals and dyes have been carefully analyzed and associated to their efficiency.

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“…This might be due to the presence of Fe 3 O 4 nanoparticles which blocked and occupied the pores structure of carbon. Previous studies have reported that the oxidation action of ferric salt played a role as an activating agent for carbon materials (Castro et al 2010;Do et al 2011;Oliveria et al 2009). However, the activation is not sufficient to cover the lost part of the porosity attributed to the present of Fe 3 O 4 nanoparticles.…”

Section: Surface Area and Pore Propertiesmentioning

confidence: 99%

Synthesis of Fe3O4-loaded porous carbons developed from rice husk for removal of arsenate from aqueous solution

Luo

Shen

Wang

et al. 2016

Int. J. Environ. Sci. Technol.

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A simple one-step synthetic approach using rice husk has been developed to prepare magnetic Fe 3 O 4 -loaded porous carbons composite (MRH) for removal of arsenate (As(V)). The characteristics of adsorbent were evaluated by transmission electron microscope, scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller analysis, and thermogravimetric analysis. On account of the combined advantages of rice husk carbons and Fe 3 O 4 nanoparticles, the synthesized MRH composites showed excellent adsorption efficiency for aqueous As(V). The removal of As(V) by the MRH was studied as a function of contact time, initial concentration of As(V), and media pH. The adsorption kinetics of As(V) exhibited a rapid sorption dynamics by a pseudo-second-order kinetic model, implying the mechanism of chemisorption. The adsorption data of As(V) were fitted well to the Langmuir isotherm model, and the maximum uptake amount (q m ) was calculated as 4.33 mg g -1 . The successive regeneration and reuse studies showed that the MRH kept the sorption efficiencies over five cycles. The obtained results demonstrate that the MRH can be utilized as an efficient and lowcost adsorbent for removal of As(V) from aqueous solutions.

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Activated carbon/Fe3O4 nanoparticle composite: Fabrication, methyl orange removal and regeneration by hydrogen peroxide

Cited by 241 publications

References 47 publications

Synthesis and characterization of magnetic activated carbon developed from palm kernel shells

Synthesis and characterization of magnetic activated carbon developed from palm kernel shells

Nanosized magnetite in low cost materials for remediation of water polluted with toxic metals, azo- and antraquinonic dyes

Synthesis of Fe3O4-loaded porous carbons developed from rice husk for removal of arsenate from aqueous solution

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