Rapid removal of heavy metal cations and anions from aqueous solutions by an amino-functionalized magnetic nano-adsorbent

Huang, Shih‐Han; Chen, Dong-Hwang

doi:10.1016/j.jhazmat.2008.06.075

Cited by 582 publications

(153 citation statements)

References 30 publications

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“…The discharged dyes degrade the water quality and are the chief threat to human health due to toxic, mutagenic and carcinogenic nature (Gupta et al 2012;Huang and Chen 2009). Therefore, colored wastewater cannot be discharged without proper treatment.…”

Section: Introductionmentioning

confidence: 99%

Pectin–cerium (IV) tungstate nanocomposite and its adsorptional activity for removal of methylene blue dye

Gupta

Pathania

Singh

2013

Int. J. Environ. Sci. Technol.

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Pectin-cerium (IV) tungstate composite (Pc/ CT) has been prepared by sol gel method at room temperature. The composite ion exchanger has been characterized using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and Fourier infrared spectroscopy. The ion exchange capacity, pH titrations, thermal stability and distribution coefficient of composite ion exchanger were investigated. The Na ? ions exchange capacity of the Pc/CT has been observed higher (1.4 meq g -1 ) as compared to its inorganic counterpart (0.8 meq g -1 ). Pc/CT composite ion exchanger was thermally stable and retained about 60 % of its ion exchange capacity up to 400°C. The distribution study has inferred more selective the Pc/CT for Zn 2? as compared to other metal ions. The adsorption efficiency of Pc/CT was tested for methylene blue removal dye from aqueous phase. The removal of dye followed pseudo-second-order kinetics.

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Section: Introductionmentioning

confidence: 99%

Pectin–cerium (IV) tungstate nanocomposite and its adsorptional activity for removal of methylene blue dye

Gupta

Pathania

Singh

2013

Int. J. Environ. Sci. Technol.

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“…At pH (5-7) the adsorbent surface is deprotonated and negatively charge, making the sites available to the metal ions, which increasingly bind to adsorbent surface through a mechanism similar to that of exchange interactions [19]. The observed decrease of biosorption at higher pH probably due to chemical precipitation of metal ions as M(OH) 2 [20].…”

Section: Effect Of Phmentioning

confidence: 99%

“…The effect of contact time on removal of metal ions was studied for varying contact times (10,20,30,40, 50, 60, 90 and 120 min.). Experiments were carried out on a number of solutions each of them was composed of 50 ml of metal ion solution of 5 mg/L concentration at pH adjusted to the optimal pH then, 0.4 g of nano-sawdust was added to each solution.…”

Section: Effect Of Contact Timementioning

confidence: 99%

Removal of Lead and Copper Ions from Polluted Aqueous Solutions using Nano-Sawdust Particles

A¹,

A²,

H³

2017

Int J Waste Resour

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“…Functionalization of MNP-NH 2 with 4-{[(E)-phenylmethylidene]amino}benzoic acid (Maph-COOH) to afford imine functionalized MNPs (MNP-Maph), a novel nanomaterial was achieved by covalent bonding of the carboxylic acid group of Maph-COOH with the amino group of MNP-NH 2 [27,28]. Maph-COOH (100 mg) previously dissolved in anhydrous DMF was stirred with DCC (100 mg) for 24 h at 20 • C. Solution of MNP-NH 2 (200 mg) in anhydrous DMF and DMAP (70 mg) was added dropwise into the mixture.…”

Section: Synthesis Of Imine Functionalized Mnps (Mnp-maph)mentioning

confidence: 99%

Uptake of Zn2+ and As3+ from Wastewater by Adsorption onto Imine Functionalized Magnetic Nanoparticles

Ojemaye

Okoh

2018

Water

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Abstract:In this paper, imine functionalized magnetic nanoparticles (MNP-Maph) were employed to aqueous solutions for the uptake of Zn(II) and As(III). Characterization of the material showed the successful synthesis of this material. Factors affecting the uptake of metal ions in aqueous solution such as change in pH, time, adsorbent dose, adsorbate concentration, and temperature were investigated and optimized to determine the best experimental conditions for the effective adsorption of Zn(II) and As(III) from wastewater samples. The adsorption capacity of MNP-Maph followed similar patterns as that of amine functionalized magnetic nanoparticles (MNP-NH 2 ) for the uptake of both metal ions from aqueous solution when solution pH was varied. Higher pH values favored the uptake of Zn(II) and As(III) by using both adsorbents. Also, increasing the contact time and temperature yielded a higher uptake of Zn(II) and As(III). Both processes can best be described with a pseudo-second order kinetic model, while the Langmuir maximum adsorption capacity (q m ) for Zn(II) increased from 35.83 to 54.53 mg g −1 , and for As(III) from 50.08 to 57.60 mg g −1 .Of note is that the q m of As(III) was higher than that of Zn(II) because of the lower concentration of As(III) in solution compared to that of Zn(II), and thermodynamic parameters indicated that the adsorption processes were heat absorbing and rapid in nature. Experiments to evaluate if the adsorbent could be recycled showed excellent recyclability capacity of MNP-Maph after seven runs. Lastly, application of MNP-Maph for the uptake of Zn(II) and As(III) from municipal wastewater samples showed remarkable sorption performance confirming the potential of imine functionalized magnetic nanoparticles as an excellent adsorbent for the uptake of metal ions from aqueous solutions.

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Rapid removal of heavy metal cations and anions from aqueous solutions by an amino-functionalized magnetic nano-adsorbent

Cited by 582 publications

References 30 publications

Pectin–cerium (IV) tungstate nanocomposite and its adsorptional activity for removal of methylene blue dye

Pectin–cerium (IV) tungstate nanocomposite and its adsorptional activity for removal of methylene blue dye

Removal of Lead and Copper Ions from Polluted Aqueous Solutions using Nano-Sawdust Particles

Uptake of Zn2+ and As3+ from Wastewater by Adsorption onto Imine Functionalized Magnetic Nanoparticles

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