Core–nanoshell magnetic composite material for adsorption of Pb(II) in wastewater

He, Xiaona; Che, Ruxin; Wang, Yilin; Li, Yue; Wan, Lipeng; Xiang, Xin

doi:10.1016/j.jece.2015.06.013

Cited by 20 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are many possible methods to remove lead from water . Recent studies revealed that spinel ferrites and their composites possess excellent Pb(II) adsorption . The Pb(II) adsorption capacity of Co 0.6 Fe 2.4 O 4 was 80.3 mg/g at 45 °C and that of carbon nanotubes–CoFe 2 O 4 –NH 2 was 66.3 mg/g at 30 °C; however, it increased to 140.4 mg/g by functionalizing with chitosan .…”

Section: Introductionmentioning

confidence: 99%

“…16 Recent studies revealed that spinel ferrites and their composites possess excellent Pb(II) adsorption. 17 23 Therefore, it is very interesting to think of an efficient way to improve the Pb(II) adsorption of CuFe 2 O 4 in order to extend its potential application. One of the most popular methods to improve its adsorption is to tailor functional groups such as the amino group or graphene oxide on ferrite particles.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effective Removal of Pb(II) from Aqueous Media by a New Design of Cu–Mg Binary Ferrite

Tran¹,

Quang

Thi³

et al. 2020

ACS Omega

View full text Add to dashboard Cite

Metal oxides and their composites have been extensively studied as effective adsorbents for the removal of heavy metals from aqueous solutions in environmental remediation. In this work, Cu 0.5 Mg 0.5 Fe 2 O 4 was synthesized by a co-precipitation method followed by calcination (900 °C) and investigated for Pb(II) adsorption. The resultant samples were characterized by various analytical techniques including X-ray diffraction, N 2 adsorption−desorption, scanning electron microscopy, thermogravimetric analysis, and Fourier transform infrared spectroscopy. The results revealed that single-phase cubic spinel was obtained by the calcination of assynthesized samples at a temperature of 900 °C. Cu 0.5 Mg 0.5 Fe 2 O 4 ferrite is a mesoporous material with a surface area, a total pore volume, and an average pore size of 41.3 m 2 /g, 0.2 cm 3 /g, and 15.1 nm, respectively. Pb(II) adsorption on Cu 0.5 Mg 0.5 Fe 2 O 4 fitted well to the Langmuir model, indicating monolayer adsorption with a maximum capacity of 57.7 mg/g. The pseudo-second-order kinetic model can exactly describe Pb(II) adsorption with the normalized standard deviation (Δq) of 1.24%. The obtained results confirmed that the Cu 0.5 Mg 0.5 Fe 2 O 4 ternary oxides exhibit a high adsorption capacity toward Pb(II), thanks to the increase in active adsorptive sites of ferrite.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effective Removal of Pb(II) from Aqueous Media by a New Design of Cu–Mg Binary Ferrite

Tran¹,

Quang

Thi³

et al. 2020

ACS Omega

View full text Add to dashboard Cite

show abstract

“…Magnetic separation had an exceptional advantage, allowing the adsorbent to be easily separated from the aqueous solution when in the presence of an external magnetic field. In recent years, Fe 3 O 4 nanoparticles were used as an adsorbent by several researchers [15][16] , since Fe 3 O 4 nanoparticles could easily be prepared and cover a high specific surface area. However, Fe 3 O 4 magnetic particles have several drawbacks, such as low stability in strong acidic environments and low selectivity, as it contains hydroxyl, a functional group on the surface of particles.…”

Section: Numerous Technologies and Methods For The Removal Of Zn(ⅱ) Andmentioning

confidence: 99%

Preparation of L-arginine modified magnetic adsorbent by one-step method for removal of Zn(Ⅱ) and Cd(Ⅱ) from aqueous solution

Guo

Jiao

Zhou

et al. 2017

Chemical Engineering Journal

View full text Add to dashboard Cite

A new type of magnetic adsorbent was prepared using a simple one-step synthesis for the removal of Zn(Ⅱ) and Cd(Ⅱ) from aqueous solution. Structure characterization demonstrated that the surface of the magnetic nanoparticles (MNPs) had been modified by L-arginine. Factors that affect the adsorption of Zn(Ⅱ) and Cd(Ⅱ) onto the MNPs modified with L-arginine (MNPs-L), such as pH, ionic strength, initial concentration, contact time, temperature, and compete adsorption, were investigated. The adsorption kinetic data followed the pseudo-second-order model (PSOE) and the intra particle diffusion model (IPD). Isotherm data demonstrate that the Langmuir absorption model was the best-suited model for this research, and the calculated maximum adsorption capacities of Zn(Ⅱ) and Cd(Ⅱ) were 150.4 mg/g and 120.2 mg/g, respectively. Thermodynamic parameters indicated a spontaneous and endothermic adsorption process. In addition, regeneration studies suggested that MNPs-L were stable. Thus, MNPs-L could be a promising material for removing Zn(Ⅱ) and Cd(Ⅱ) from wastewater.

show abstract

“…The wavelengths between 874 cm À1 and 722 cm À1 show the presence of CO, suggesting carbonates in CT H 3 PO 4 þ CO 2 . It is a very positive aspect, since this group can act on retention of metal ions (He et al 2015;Chen et al 2017).…”

Section: Characterization Of Ct H 3 Po 4 þ Co 2 and T In Naturamentioning

confidence: 99%

Triple activation (thermal-chemical-physical) in the development of an activated carbon from tobacco: characterizations and optimal conditions for Cd2+ and Pb2+ removal from waters

Manfrin

Gonçalves

Schwantes

et al. 2020

Water Practice and Technology

View full text Add to dashboard Cite

This research aimed to transform tobacco originating from smuggled cigarettes into activated carbons, and their application in the remediation of contaminated water by cadmium and lead. For this, a triple activation was performed (thermal – chemical H3PO4 – physical CO2), resulting in the studied activated carbon (CT H3PO4 + CO2). The carbon was characterized by its chemical composition, pHPZC, SEM, FT-IR, BET, and BJH. The influence of the pH of Cd2+ and Pb2+ solutions, and the influence of the adsorbent dose were studied. Isotherms were constructed by linear and nonlinear models of Langmuir, Freundlich, Sips, Dubinin-Radushkevich, and Temkin. CT H3PO4 + CO2 activated carbon has on its surface carbonates, hydroxyls, carboxylic, and carbonic acids. The triple activation caused changes on pHPZC (from 5.40 to 9.59). The SEM reveal a carbon surface full of irregular and heterogeneous structures, spongy aspect, with an estimated SSA increase of 395x and pore volume of 37x. The produced activated carbon has applicability over a wide pH range (3.00–7.00), with an ideal dose of the activated carbon estimated at 4 g L−1 for greater efficiency in removing Cd2+ and Pb2+. The linear and nonlinear models reveal that metal adsorption is predominantly physical and multi-layered, with a possible reuse in new sorption cycles.

show abstract

Core–nanoshell magnetic composite material for adsorption of Pb(II) in wastewater

Cited by 20 publications

References 15 publications

Effective Removal of Pb(II) from Aqueous Media by a New Design of Cu–Mg Binary Ferrite

Effective Removal of Pb(II) from Aqueous Media by a New Design of Cu–Mg Binary Ferrite

Preparation of L-arginine modified magnetic adsorbent by one-step method for removal of Zn(Ⅱ) and Cd(Ⅱ) from aqueous solution

Triple activation (thermal-chemical-physical) in the development of an activated carbon from tobacco: characterizations and optimal conditions for Cd2+ and Pb2+ removal from waters

Contact Info

Product

Resources

About