Removal of the heavy metal ion nickel (II) via an adsorption method using flower globular magnesium hydroxide

Jiang, Demin; Yang, Yuhan; Huang, Chentao; Huang, Meiying; Chen, Jianjun; Rao, Tongde; Ran, Xiao-Yan

doi:10.1016/j.jhazmat.2019.01.096

Cited by 150 publications

(44 citation statements)

References 58 publications

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“…As a result adsorption slowed down. By close observation of Figure 7a, it is clear that point of equilibrium was reached within 60-90 min for adsorbent materials [73]. Moreover, adsorption capacity of hybrid materials was higher than pure Fe3O4 and PANI.…”

Section: Effect Of Time and Temperature On Adsorptionsupporting

confidence: 58%

Effective Adsorption of Hexavalent Chromium and Divalent Nickel Ions from Water through Polyaniline, Iron Oxide, and Their Composites

2020

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Water pollution caused by industrial wastes containing heavy metals and dyes is a major environmental problem. This study reports on the synthesis, characterization, and utilizations of Polyaniline (PANI) and its composites with Fe3O4 for the removal of hexavalent chromium Cr(VI) and divalent nickel Ni(II) ions from water. The adsorption data were fitted in Freudlich, Langmuir, Tempkin, Dubbanin–Ruddishkawich (D–R), and Elovich adsorption isotherms. The Freundlich isotherm fits more closely to the adsorption data with R2 values of 0.9472, 0.9890, and 0.9684 for adsorption of Cr(VI) on Fe3O4, PANI, and PANI/Fe3O4 composites, respectively, while for adsorption of Ni(II) these values were 0.9366, 0.9232, and 0.9307 respectively. The effects of solution pH, initial concentration, contact time, ionic strength, and adsorbent dosage on adsorption behavior were investigated. The adsorption ability of composites was compared with pristine PANI and Fe3O4 particles. Activation energy and other thermodynamic properties such as changes in enthalpy, entropy, and Gibbs free energy indicated spontaneous and exothermic adsorption.

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Section: Effect Of Time and Temperature On Adsorptionsupporting

confidence: 58%

Effective Adsorption of Hexavalent Chromium and Divalent Nickel Ions from Water through Polyaniline, Iron Oxide, and Their Composites

2020

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“…The concentration of cadmium ions was determined by ICP after removal of CB-MNP by magnet and filtered through 0.22 μm filter membrane. The influences of pH conditions (pH=3, 4,5,6,7,8,9,10) and cation ions (NaCl, NaSO 4 , Na 2 CO 3 and Na 3 PO 4 ) on the absorption performance were also evaluated by similar procedures. The absorption capacity was calculated by the following equation:…”

Section: Absorption Of Cadmium Ionsmentioning

confidence: 99%

“…Adsorption technique is considered the most attractive technique because it is easy to operate and recycle [5]. The key to remove heavy metal ions from water by adsorption is the preparation and optimization of adsorption materials.…”

Section: Introducationmentioning

confidence: 99%

“…Effective removal of heave metal ions in waste water has attracted rising attention because these have caused serious environmental problems [2]. Many approaches such as chemical precipitation, adsorption, oxidation-reduction, evaporation, ionic exchange, electrochemical treatment, and membrane separation techniques have been developed for the removal of heavy metals from wastewaters [3][4][5][6].Adsorption technique is considered the most attractive technique because it is easy to operate and recycle [5]. The key to remove heavy metal ions from water by adsorption is the preparation and optimization of adsorption materials.…”

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confidence: 99%

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Facile fabrication of nanocomposites by modified carbon black loading with magnetite nanoparticles for fast removal of cadmium ions

Xiao

et al. 2020

Nano Ex.

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Magnetic nanomaterials have unique advantages in heavy metal ions absorption because of their large specific surface area and easy magnetic manipulation. Carbon nanotube or graphene loaded with magnetite nanoparticles (MNPs) have been utilized to fabricate absorbents with both high absorption capacity and fast magnetic capture. Herein, cheap commercial carbon black was used as a substitute for expensive carbon nanotube or graphene to fabricate nanocomposites (CB-MNP) by modified carbon black loaded with superparamagnetic MNPs. The fabrication process is accomplished by two steps. Carbon blacks (CB) were modified by nitric acid to produce a large number of carboxyl groups on the surface and make stable aqueous dispersion. Subsequently, CB-MNPs with high water stability and fast magnetic response were facilely prepared by iron precursors (the ratio of ferrous to ferric is 1:2) added into the above CB dispersion and tuned pH=10, finally added polyacrylic acid solution under sonication. Modified CB and CB-MNPs were characterized by transmission electron microscope (TEM), dynamic laser scattering (DLS), thermogravimetric analysis and so on. Water stability and magnetic response can be controlled by changing the proportion of CB and iron precursor. As a proof-of-concept, CB-MNPs were used for absorption removal of cadmium ions. Excellent performance was demonstrated with the removal efficiency of 71.41% and removal capacity of 39.99 mg·g −1 at the initial concentration of Cd 2+ as 5×10 −5 mol·l −1 . The effects of initial concentration of Cd 2+ , pH value and interfering anion ions were also investigated and the results indicate the potential application of CB-MNP in fast removal of heavy metal ions. IntroducationHeavy metal ions have strong toxicity to human beings and other organisms, some of which do harm to human health even in a very small concentration [1]. Effective removal of heave metal ions in waste water has attracted rising attention because these have caused serious environmental problems [2]. Many approaches such as chemical precipitation, adsorption, oxidation-reduction, evaporation, ionic exchange, electrochemical treatment, and membrane separation techniques have been developed for the removal of heavy metals from wastewaters [3][4][5][6].Adsorption technique is considered the most attractive technique because it is easy to operate and recycle [5]. The key to remove heavy metal ions from water by adsorption is the preparation and optimization of adsorption materials. Traditional adsorption materials such as clay, oxide, molecular sieve and activated carbon have been used to remove heavy metal ions [7-9]. However, many materials are limited in application due to their low adsorption efficiency, poor chemical stability and difficulty in recycling. Nano materials as adsorbents have unique advantages because their specific surface area increases rapidly with the decrease of particle size [10][11][12]. Several kinds of nano materials such as nano zero valent iron, iron oxide, titanium dioxide have b...

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“…Among these materials, organic-inorganic hybrid nanoflowers (HNFs) is newly developed functional material and has received considerable attention due to its distinctive physiochemical characteristics. By binding inorganic nanoparticles to organic components, HNFs show properties of simple product synthesis and high biomolecule efficiency comparing with the pure organic nanoflowers [29] and inorganic nanoflowers [30]. Since Ge et al [31] first reported the preparation of BSA-incorporated Cu 3 (PO 4 ) 2 nanoflowers, biomaterials-based HNFs have attracted increasing interest and many researches have focused on their biochemical applications of biosensing [32][33][34], biocatalysis [35][36][37], and drug delivery [38].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Adsorption-Interaction Mechanism of Pb(II) at Surface of Silk Fibroin Protein-Derived Hybrid Nanoflower Adsorbent

Xiong

Duan

et al. 2020

Materials

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For further the understanding of the adsorption mechanism of heavy metal ions on the surface of protein-inorganic hybrid nanoflowers, a novel protein-derived hybrid nanoflower was prepared to investigate the adsorption behavior and reveal the function of organic and inorganic parts on the surface of nanoflowers in the adsorption process in this study. Silk fibroin (SF)-derived and copper-based protein-inorganic hybrid nanoflowers of SF@Cu-NFs were prepared through self-assembly. The product was characterized and applied to adsorption of heavy metal ion of Pb(II). With Chinese peony flower-like morphology, the prepared SF@Cu-NFs showed ordered three-dimensional structure and exhibited excellent efficiency for Pb(II) removal. On one hand, the adsorption performance of SF@Cu-HNFs for Pb(II) removal was evaluated through systematical thermodynamic and adsorption kinetics investigation. The good fittings of Langmuir and pseudo-second-order models indicated the monolayer adsorption and high capacity of about 2000 mg g−1 of Pb(II) on SF@Cu-NFs. Meanwhile, the negative values of Δ r G m ( T ) θ and Δ r H m θ proved the spontaneous and exothermic process of Pb(II) adsorption. On the other hand, the adsorption mechanism of SF@Cu-HNFs for Pb(II) removal was revealed with respect to its individual organic and inorganic component. Organic SF protein was designated as responsible ‘stamen’ adsorption site for fast adsorption of Pb(II), which was originated from multiple coordinative interaction by numerous amide groups; inorganic Cu3(PO4)2 crystal was designated as responsible ‘petal’ adsorption site for slow adsorption of Pb(II), which was restricted from weak coordinative interaction by strong ion bond of Cu(II). With only about 10% weight content, SF protein was proven to play a key factor for SF@Cu-HNFs formation and have a significant effect on Pb(II) treatment. By fabricating SF@Cu-HNFs hybrid nanoflowers derived from SF protein, this work not only successfully provides insights on its adsorption performance and interaction mechanism for Pb(II) removal, but also provides a new idea for the preparation of adsorption materials for heavy metal ions in environmental sewage in the future.

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Removal of the heavy metal ion nickel (II) via an adsorption method using flower globular magnesium hydroxide

Cited by 150 publications

References 58 publications

Effective Adsorption of Hexavalent Chromium and Divalent Nickel Ions from Water through Polyaniline, Iron Oxide, and Their Composites

Effective Adsorption of Hexavalent Chromium and Divalent Nickel Ions from Water through Polyaniline, Iron Oxide, and Their Composites

Facile fabrication of nanocomposites by modified carbon black loading with magnetite nanoparticles for fast removal of cadmium ions

Investigation on the Adsorption-Interaction Mechanism of Pb(II) at Surface of Silk Fibroin Protein-Derived Hybrid Nanoflower Adsorbent

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