Application of Iron Oxide Nanomaterials for the Removal of Heavy Metals

Dave, Pragnesh N.; Chopda, Lakhan V.

doi:10.1155/2014/398569

Cited by 233 publications

(83 citation statements)

References 125 publications

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“…Zerovalent iron particles (ZVI) or nano particles (nZVI) have been used for detoxification of halogenated persistent organic pollutants, including trichloroethylene, chlorobenzenes, chlorophenols, PCBs and PBDEs [29][30][31] and range of heavy metals [32][33][34] . ZVI is a powerful and effective reducing agent and has been used for reductive dehalogenation of a number of recalcitrant halogenated pollutants 30,35 .…”

Section: Use Of Zerovalent Metallic Particlesmentioning

confidence: 99%

Sustainable Options for Mitigation of Major Toxicants Originating from Electronic Waste

Bhattacharya

Khare

2016

Current Science

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Electronic waste (e-waste) is an emerging source of toxic contaminants in the environment. It is considered to be hazardous as it is known to contain toxic metals, viz. Cr, Ni, Zn, Pb and Hg in huge amounts and organic pollutants, viz. polychlorinated biphenyls, polybrominated diphenyl ethers and tetrabromobisphenol-A. Rapid development and changes in lifestyle have resulted in a huge pile-up of e-waste and its continuous production further makes the situation troublesome. E-waste is usually processed informally for recovery of precious metals. During this process, a large amount of toxic metals, organic compounds and secondary organic pollutants such as polyaromatic hydrocarbons and dioxin enters into the environment. Disposal of raw or processed e-waste in landfills also results in contamination of soil and groundwater through leachate. Considering the present environmental condition along with toxic and persistence nature of pollutants originating from e-waste, their remediation using sustainable methods is highly desirable. This article provides an overview of different bioremediation options used and available for remediation of e-waste-related pollutants. Advantages and limitations of these methods along with their applicability in restoration of contaminated system are also highlighted.

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Section: Use Of Zerovalent Metallic Particlesmentioning

confidence: 99%

Sustainable Options for Mitigation of Major Toxicants Originating from Electronic Waste

Bhattacharya

Khare

2016

Current Science

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“…The most common ones include hematite α-Fe 2 O 3, maghemite γ-Fe 2 O 3 and magnetite Fe 3 O 4 (Teja et al 2009). Synthesis of iron oxide nanoparticles are currently widely studied not only because of purely academic interest in their properties but also because of their practical application possibilities (Dave et al 2014). Many works and articles describe various methods of the synthesis, modifi cations as well as physical and chemical properties characterization of magnetite and maghemite nanoparticles (Salado et al 2008, Urquijo et al 2011, Petcharoen et al 2012, Mascol et al 2013.…”

Section: Introductionmentioning

confidence: 99%

“…Among them adsorption on iron oxide nanoparticles seems to be very attractive. Nanoparticles, as adsorbents, have many specifi c and useful features, such as small size, magnetic properties or high surface area (Dave et al 2014). The adsorption mechanism between iron oxides and heavy metal ions is quite simple.…”

Section: Introductionmentioning

confidence: 99%

The effect of magnetite nanoparticles synthesis conditions on their ability to separate heavy metal ions

Bobik¹,

Korus²,

Dudek³

2017

Archives of Environmental Protection

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Abstract:Magnetite nanoparticles have become a promising material for scientifi c research. Among numerous technologies of their synthesis, co-precipitation seems to be the most convenient, less time-consuming and cheap method which produces fi ne and pure iron oxide particles applicable to environmental issues. The aim of the work was to investigate how the co-precipitation synthesis parameters, such as temperature and base volume, infl uence the magnetite nanoparticles ability to separate heavy metal ions. The synthesis were conducted at nine combinations of different ammonia volumes -8 cm 3 , 10 cm 3 , 15 cm 3 and temperatures -30°C, 60°C, 90°C for each ammonia volume. Iron oxides synthesized at each combination were examined as an adsorbent of seven heavy metals: Cr(VI), Pb(II), Cr(III), Cu(II), Zn(II), Ni(II) and Cd(II). The representative sample of magnetite was characterized using XRD, SEM and BET methods. It was observed that more effective sorbent for majority of ions was produced at 30°C using 10 cm 3 of ammonia. The characterization of the sample produced at these reaction conditions indicate that pure magnetite with an average crystallite size of 23.2 nm was obtained (XRD), the nanosized crystallites in the sample were agglomerated (SEM) and the specifi c surface area of the aggregates was estimated to be 55.64 m 2 ·g -1 (BET). The general conclusion of the work is the evidence that magnetite nanoparticles have the ability to adsorb heavy metal ions from the aqueous solutions. The effectiveness of the process depends on many factors such as kind of heavy metal ion or the synthesis parameters of the sorbent.

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“…In particular, recent developments in nanomaterial science and environmental nanotechnology have provided new sorbents for water trace pollutants via magnetic separation [19][20][21][22]. The upgrade of such sorbents for simultaneous use in water purification and contaminant detection is a challenging task but of great practical interest for sensing applications, thus following current interest in developing multifunctional nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

SERS Detection of Penicillin G Using Magnetite Decorated with Gold Nanoparticles

2017

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Sensitive and reliable procedures for detecting vestigial antibiotics are of great relevance for water quality monitoring due to the occurrence of such emergent pollutants in the aquatic environment. As such, we describe here research concerning the use of multifunctional nanomaterials combining magnetic and plasmonic components. These nanomaterials have been prepared by decorating magnetite nanoparticles (MNP) with colloidal gold nanoparticles (Au NPs) of distinct particle size distributions. Several analytical conditions were investigated in order to optimize the surface enhanced Raman scattering (SERS) detection of penicillin G (PG) dissolved in water. In particular, the dependence of the SERS signal by using distinct sized Au NPs adsorbed at the MNP was investigated. Additionally, microscopic methods, including Raman confocal microscopy, were employed to characterize the SERS substrates and then to qualitatively detect penicillin G using such substrates. For example, magnetic-plasmonic nanocomposites can be employed for magnetically concentrate analyte molecules and their removal from solution. As a proof of concept, we applied magneto-plasmonic nanosorbents in the removal of aqueous penicillin G and demonstrate the possibility of SERS sensing this antibiotic.

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Application of Iron Oxide Nanomaterials for the Removal of Heavy Metals

Cited by 233 publications

References 125 publications

Sustainable Options for Mitigation of Major Toxicants Originating from Electronic Waste

Sustainable Options for Mitigation of Major Toxicants Originating from Electronic Waste

The effect of magnetite nanoparticles synthesis conditions on their ability to separate heavy metal ions

SERS Detection of Penicillin G Using Magnetite Decorated with Gold Nanoparticles

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