Removal of Pb (II) and Cu (II) from aqueous solutions by NaA zeolite coated magnetic nanoparticles and optimization of method using experimental design

Khodadadi, Mohammad; Malekpour, Akbar; Ansaritabar, Masoomeh

doi:10.1016/j.micromeso.2017.04.032

Cited by 44 publications

(14 citation statements)

References 28 publications

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“…In the next step, magnetic zeolite P was separated by an external magnet and residual solutions were analyzed by ICP spectrometer. To compare the adsorption efficiency of the adsorbent in different conditions, the removal percentage Q and adsorbed amounts per mass of adsorbent q (mg·g −1 ) were calculated as follows: [13,19]…”

Section: Adsorption Experimentsmentioning

confidence: 99%

“…However, zeolite is not easy to be separated from the adsorbed heavy metal ions, there is a problem about the reuse of zeolite after adsorbing heavy metal waste water. Such difficulty could be resolved through preparation the magnetically modified zeolite which would not only preserving the all useful properties of zeolite but also the adsorbent can be separated conveniently from the solutions merely using an external magnet [13,15]. Uthain et al [16] first put forward the magnetic carrier technology when researching the waste-water treatment in 1940s.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the technologies for removing heavy metals from waste water mainly include chemical precipitation [8], filtration [9], ion exchange [10], membrane separation [11][12][13][14], electrochemical precipitation [11], etc. However, these technologies have some native defect such as extravagant price but low efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Hydrothermal synthesis of magnetic zeolite P from fly ash and its properties

Wang

Sun

Zhang

et al. 2020

Mater. Res. Express

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Magnetic zeolite P with the spherical form was successfully synthesized from low-grade fly ash via hydrothermal synthesis method. These samples were characterized by XRD, XRF, FTIR, BET, VSM, SEM and TEM. The textural properties of magnetic zeolite P were further studied by N 2 adsorptiondesorption technique. In addition, the vibrating sample magnetometer study confirmed that the saturation magnetization is 11.99 emu·g −1 , indicating that magnetic zeolite P has sufficiently magnetic property to be attracted by a permanent magnet. Moreover, this facile approach to study saturation adsorption capacity and percentage removal of the magnetic zeolite P for Pb (II) and Cu (II) ions might expand the application of magnetic zeolite P in the adsorption of heavy metal ions, and it may be further extended to other magnetic zeolite materials.

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Section: Adsorption Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrothermal synthesis of magnetic zeolite P from fly ash and its properties

Wang

Sun

Zhang

et al. 2020

Mater. Res. Express

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“…Over the past few decades, contamination from lead has caused major public health issues due to the widespread usage of this element in many important industries, such as battery manufacturing, electroplating, pigments, and finishing [1,2]. Given the non-biodegradability and cumulative toxicity of lead, this contaminant slowly accumulates in human bodies through water intake or the food chain, ultimately resulting in serious diseases or even death [3,4].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cellulose Nanocrystal-g-Poly(Acrylic Acid-Co-Acrylamide) Aerogels for Efficient Pb(II) Removal

Chen

et al. 2020

Polymers

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In this work, cellulose nanocrystals (CNCs) obtained by the acid hydrolysis of waste bamboo powder were used to synthesize cellulose nanocrystal-g-poly(acrylic acid-co-acrylamide) (CNC-g-P(AA/AM)) aerogels via graft copolymerization followed by freeze-drying. The structure and morphology of the resulting aerogels were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), and the CNC-g-P(AA/AM) aerogels exhibited excellent absorbent properties and adsorption capacities. Subsequent Pb(II) adsorption studies showed that the kinetic data followed the pseudo-second-order equation, while the adsorption isotherms were best described using the Langmuir model. The maximum Pb(II) adsorption capacity calculated by the Langmuir model reached up to 366.3 mg/g, which is a capacity that outperformed that of the pure CNC aerogel. The CNC-g-P (AA/AM) aerogels become structurally stable through chemical cross-linking, which enabled them to be easily regenerated in HCl solution and retain the adsorption capacity after repeated use. The aerogels were found to maintain 81.3% removal efficiency after five consecutive adsorption–desorption cycles. Therefore, this study demonstrated an effective method for the fabrication of an aerogel adsorbent with an excellent reusability in the effective removal of Pb(II) from aqueous solutions.

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“…These include: external mass transfer, intraparticle diffusion, protonation, and adsorption of molecules of sorbate (Uddin 2017;Shen et al 2017Shen et al , 2018. The fast process of intraparticle diffusion and slow process of outer-sphere complexation are components of the reaction mechanism involved in Lead uptake in aqueous solution (Bonnet et al 2017;Dhal et al 2013;Khodadadi et al 2017). In addition, Lead removal from the aquatic environment is controlled by solution concentration and exchange of ions (Egirani and Wessey 2015a;Wang et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of kaolinite coated with copper oxide and its effect on the removal of aqueous Lead(II) ions

et al. 2019

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The removal of Lead (Pb 2+) ions from waste water in the aquatic environment by copper oxide-kaolinite composite forms an important step involved in the reduction of Lead ions in the environment. The study investigated the synthesis, characterization, and application of copper oxide-kaolinite composite in the removal of Lead ions from aqueous systems. The synthesis of the composite involved a trimetric process to produce the copper oxide (CuO)-kaolinite composite. The characterization involved the determination of cation exchange capacity, specific surface area, and spectral analysis by sodium saturation method, nitrogen gas adsorption techniques, and scanning electron spectroscopy, respectively. The determination of parameters affecting the reaction mechanism and reaction kinetics involved the use of batch mode techniques. The findings indicated a reaction mechanism that was less than one proton coefficient, higher mass transfer rates when compared with uncoated kaolinite. Here, the intraparticle diffusion was higher than the value for the uncoated kaolinite. The reactions based on Pb 2+ initial concentration indicated that the coated kaolinite gradually became saturated as the concentration was increased. The reactions based on solid concentration (Cp) demonstrated a complex change in the capacity of adsorption over different Pb 2+ concentrations (10-40 mgL −1) and solid concentrations (2-10 gL −1). Here, the reduction in specific surface area, particle size increase, mineral aggregation, and concentration gradient effect controlled the complex changes in adsorption. In conclusion, the copper oxide-kaolinite composite significantly enhanced the adsorption of Pb 2+ ions.

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Removal of Pb (II) and Cu (II) from aqueous solutions by NaA zeolite coated magnetic nanoparticles and optimization of method using experimental design

Cited by 44 publications

References 28 publications

Hydrothermal synthesis of magnetic zeolite P from fly ash and its properties

Hydrothermal synthesis of magnetic zeolite P from fly ash and its properties

Fabrication of Cellulose Nanocrystal-g-Poly(Acrylic Acid-Co-Acrylamide) Aerogels for Efficient Pb(II) Removal

Synthesis and characterization of kaolinite coated with copper oxide and its effect on the removal of aqueous Lead(II) ions

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