Magnetic dithiocarbamate functionalized reduced graphene oxide for the removal of Cu(II), Cd(II), Pb(II), and Hg(II) ions from aqueous solution: Synthesis, adsorption, and regeneration

Fu, Weng; Huang, Zhiqiang

doi:10.1016/j.chemosphere.2018.06.087

Cited by 196 publications

(29 citation statements)

References 45 publications

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“…The potential for the regeneration of the lead loaded adsorbents has also attracted much attention and several studies have investigated the reusability of the sorbents after regeneration. These include: CoFe 2 O 4 -G, NiFe 2 O 4 -G, Fe 3 O 4 -GS, EDTA-mGO, EDTA-MCS/GO, DTPA/MGO, GOMCS-IL, and IT-PRGO, Mg−Al LDH / pRGO [67][68][69][70][71][72][73][74][75]. Most of these nanocomposites were reusable with Fe 3 O 4 -GS and EDTA-mGO maintained more than 80% of their original adsorption capacity [76,77].…”

Section: Lead Removalmentioning

confidence: 99%

“…Cadmium is another highly toxic heavy metal, where the kinetics of its adsorption with various conventional adsorbents including Amberlite IR-120 synthetic resin-101 mg/g [110], modified sugarcane bagasse pith-188 mg/g [111], hydroxyapatite-181 mg/g [112], modified magnetic chitosan-202 mg/g [113], magnetic dithiocarbamate-83.21 mg/g [68], and e-waste derived alumino-silicate ion exchange resin-235 mg/g [114] are represented by the pseudo-second order model. In comparison, GO-based adsorbents had better results overall with capacities ranging from 3.6 mg/g to 426 mg/g.…”

Section: Cadmium Removalmentioning

confidence: 99%

“…The three most common were solvothermal, hydrothermal and dispersion methods. In some cases, a combination of the methods was used to synthesize different components of the adsorbents [68,70]. The most common additive to graphene was organic, showing the most promise with regards to maximum capacities.…”

Section: Copper Removalmentioning

confidence: 99%

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Recent Advances in Applications of Hybrid Graphene Materials for Metals Removal from Wastewater

2020

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The presence of traces of heavy metals in wastewater causes adverse health effects on humans and the ecosystem. Adsorption is a low cost and eco-friendly method for the removal of low concentrations of heavy metals from wastewater streams. Over the past several years, graphene-based materials have been researched as exceptional adsorbents. In this review, the applications of graphene oxide (GO), reduce graphene oxide (rGO), and graphene-based nanocomposites (GNCs) for the removal of various metals are analyzed. Firstly, the common synthesis routes for GO, rGO, and GNCs are discussed. Secondly, the available literature on the adsorption of heavy metals including arsenic, lead, cadmium, nickel, mercury, chromium and copper using graphene-based materials are reviewed and analyzed. The adsorption isotherms, kinetics, capacity, and removal efficiency for each metal on different graphene materials, as well as the effects of the synthesis method and the adsorption process conditions on the recyclability of the graphene materials, are discussed. Finally, future perspectives and trends in the field are also highlighted.

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Section: Lead Removalmentioning

confidence: 99%

Section: Cadmium Removalmentioning

confidence: 99%

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Recent Advances in Applications of Hybrid Graphene Materials for Metals Removal from Wastewater

2020

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“…Numerous sorbents such as carbon‐based materials (e.g., activated carbon, carbon nanotubes, and graphene oxides), low‐cost adsorbents (e.g., agricultural wastes, industrial wastes, sea materials like chitosan, and natural materials such as zeolite), and bio‐sorbents have been used for the treatment of wastewater containing heavy metals. Recently, various adsorbents such as biochars, cellulosic adsorbent, magnetic graphene oxide, ferromanganese biochar composites, and chitosan bead have been specifically employed to decontaminate Cu 2+ and Cd 2+ ions from aqueous solutions …”

Section: Introductionmentioning

confidence: 99%

Novel Fe₃O₄/hydroxyapatite/β‐cyclodextrin nanocomposite adsorbent: Synthesis and application in heavy metal removal from aqueous solution

Ansari

Vahedi

Tavakoli

et al. 2018

Applied Organom Chemis

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The increased global concern on environmental protection has made researchers focus their attention on new and more efficient methods of pollutant removal. In this research, novel nanocomposite adsorbents,i.e., magnetic hydroxyapatite (Fe 3 O 4 @HA) and magnetic hydroxyapatite β-cyclodextrin (Fe 3 O 4 @HA-CD) were synthesized and used for heavy metal removal. The adsorbents were characterized by FTIR, XRD, TGA, VSM, and SEM. In order to investigate the effect of β-cyclodextrin (β-CD) removal efficiency, adsorption results of nine metal ions were compared for both adsorbents. β-CD showed the most increasing effect for Cd 2+ and Cu 2+ removal, so these two ions were selected for further studies. The effect of diverse parameters including pH, contact time, initial metal ion concentration and adsorbent dosage on the adsorption process was discussed. The optimum pH was 6 and adsorption equilibrium was achieved after 1 hr. Adsorption kinetic data were well fitted by pseudo-second-order model proposing that metal ions were adsorbed via chemical reaction. Adsorption isotherm was best described by the Langmuir model, and maximum adsorption capacity for Cd 2+ and Cu 2+ was 100.00 and 66.66 (mg/g), respectively. Desorption experiment was also done, and the most efficient eluent used for desorption of metal ions was EDTA (0.001 M) with 91% and 88% of Cd 2+ and Cu 2+ release, respectively. Recyclability studies also showed a 19% decrease in the adsorption capacity of the adsorbent after five cycles of regeneration. Therefore, the synthesized adsorbents were recognized as potential candidates for heavy metal adsorption applications.

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“…The analysis showed a significant increase in the number of functional groups, and the adsorption capacity of Pb(II) increased from 328

39 mg/g to 479

46 mg/g. Fu et al [ 23 ] synthesized dithiocarbamate(DTC) modified magnetic reduce graphene oxide (RGO-PDTC/Fe3O4). The results indicated that it is an excellent adsorbent for heavy metal ions removal, which exhibits large adsorption capacities, fast kinetics and solid–liquid separation.…”

Section: Introductionmentioning

confidence: 99%

Preparation of RGO and Anionic Polyacrylamide Composites for Removal of Pb(II) in Aqueous Solution

Sun

et al. 2020

Polymers

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Graphene oxide (GO) have been reported as adsorbent materials, because its surface contains a large number of oxygen-containing groups, which provide masses of active sites. Nevertheless, it is difficult to separate GO from aqueous solution by conventional means after the end of the adsorption process. Therefore, ethylene diamine-reduced graphene oxide/anionic polyacrylamide (E-RGO/APAM), with a large quantity of adsorption sites and strong flocculation was prepared in this study. The composite E-RGO/APAM was characterized by Fourier transform infrared (FTIR), laser Raman spectrometer (IR), scanning electron microscope (SEM). The obtained results indicated that amino groups were successfully introduced into GO. Particle size test showed that the particle size of E-RGO/APAM is up to three micrometers, which can be separated from the water by conventional means, such as filtration and centrifugation, to avoid secondary pollution. The efficiency of E-RGO/APAM for removing Pb(II) was tested. The results showed that the process of adsorption of Pb(II) by E-RGO/APAM can be fitted by pseudo second order kinetic equation, indicating that the adsorption rate of the adsorbent depends on the chemisorption process, and the theoretical maximum adsorption amount of E-RGO/APAM is 400.8 mg/g. Based on these results, it can be stated that E-RGO/APAM is effective in the removal of Pb(II) from aqueous solutions, and provides a new method for the removal of heavy metal ions from industrial wastewater.

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Magnetic dithiocarbamate functionalized reduced graphene oxide for the removal of Cu(II), Cd(II), Pb(II), and Hg(II) ions from aqueous solution: Synthesis, adsorption, and regeneration

Cited by 196 publications

References 45 publications

Recent Advances in Applications of Hybrid Graphene Materials for Metals Removal from Wastewater

Recent Advances in Applications of Hybrid Graphene Materials for Metals Removal from Wastewater

Novel Fe₃O₄/hydroxyapatite/β‐cyclodextrin nanocomposite adsorbent: Synthesis and application in heavy metal removal from aqueous solution

Preparation of RGO and Anionic Polyacrylamide Composites for Removal of Pb(II) in Aqueous Solution

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Magnetic dithiocarbamate functionalized reduced graphene oxide for the removal of Cu(II), Cd(II), Pb(II), and Hg(II) ions from aqueous solution: Synthesis, adsorption, and regeneration

Cited by 196 publications

References 45 publications

Recent Advances in Applications of Hybrid Graphene Materials for Metals Removal from Wastewater

Recent Advances in Applications of Hybrid Graphene Materials for Metals Removal from Wastewater

Novel Fe3O4/hydroxyapatite/β‐cyclodextrin nanocomposite adsorbent: Synthesis and application in heavy metal removal from aqueous solution

Preparation of RGO and Anionic Polyacrylamide Composites for Removal of Pb(II) in Aqueous Solution

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Novel Fe₃O₄/hydroxyapatite/β‐cyclodextrin nanocomposite adsorbent: Synthesis and application in heavy metal removal from aqueous solution