Adsorption of Cd(II), Hg(II) and Zn(II) from aqueous solution using mesoporous activated carbon produced from Bambusa vulgaris striata

González, P.G.; Pliego-Cuervo, Y.B.

doi:10.1016/j.cherd.2014.02.013

Cited by 91 publications

(40 citation statements)

References 48 publications

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“…An RL value greater than 1 indicates unfavorable adsorption; RL equal to 1 reflects linear adsorption. An RL between 0 and 1 specifies favorable adsorption, and RL less than 0 indicates irreversible adsorption (Gonzalez and Pliego-Cuervo 2014). In the current study, the calculated RL values for the adsorption of Cd(II) and Hg(II) at 25 °C ranged from 0.101 to 0.018 and 0.046 to 0.008, respectively, for the initial metal ion concentration of 50 to 300 mg/g.…”

Section: Fig 8 Adsorption Isotherms Of Mrbmentioning

confidence: 85%

“…Adsorption is one of the most studied methods due to its high efficiency, easy handling, low cost of the materials, and reversibility. Various materials have been developed for the adsorption of Hg(II) and Cd(II), including activated carbon (Gonzalez and Pliego-Cuervo 2014), clay minerals (Li 2 h. The product was thoroughly washed with distilled water and dried. Next, 4 g of this product was mixed with 100 mL of sodium chloroacetate (25%) and 50 mL of sodium hydroxide (30%) at 60 °C for 2 h and then heated continuously in a boiling water bath for 4 h. The mixture was filtered and washed with distilled water until the filtrate was colorless and the pH of the filtrate was near neutral range.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Adsorption of Mercury(II) and Cadmium(II) from Aqueous Solution onto Rice Bran Modified with Chelating Ligands

Zhang

Luo

2016

BioResources

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aTo enhance the removal of mercury (Hg(II)) and cadmium (Cd(II)) from aqueous solutions, rice bran (RB) was reacted with epichlorohydrin and then modified with ethylenediamine and sodium chloroacetate to bear iminodiacetate functional groups. The modified rice bran (MRB) was characterized by Fourier transform-infrared spectroscopy (FT-IR), thermogravimetric analysis (TG), energy dispersive spectroscopy (EDS), back titration, and X-ray photoelectron spectroscopy (XPS). The adsorption properties of MRB for Hg(II)/Cd(II) ions were also evaluated in batch experiments. The sorption kinetic experimental data were best described by the pseudo-second-order model. The maximum adsorption capacity (163.9 mg/g for Hg(II) at pH 5.0 and 106.4 mg/g for Cd(II) at pH 6.0) was observed at 298 K, and the isotherm adsorption equilibrium of MRB was followed by Langmuir isotherm equation. The major adsorption mechanisms should be predominantly controlled by the formation of complexes between the functional groups of MRB and Hg(II)/Cd(II) ions as well as ion-exchange. The regeneration experiments showed that the MRB could be successfully reused for six cycles when 0.1 M HCl eluent was used.

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Section: Fig 8 Adsorption Isotherms Of Mrbmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorption of Mercury(II) and Cadmium(II) from Aqueous Solution onto Rice Bran Modified with Chelating Ligands

Zhang

Luo

2016

BioResources

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“…At pH higher than 5.0, only slight decrease in Hg (II) biosorption was observed. We consider that at pH 5, there is no competition between the hydrogen and Hg (II) for the available sorption sites on the RAS and AAS achieving a relative maximum biosorption capacity (Gonza´lez and Pliego-Cuervo, 2014). Therefore, in the subsequent work, experiments were carried out at fixed optimum pH of 5.0.…”

Section: Effect Of Initial Ph On Biosorptionmentioning

confidence: 99%

“…We selected the data in Figure 9 and analyzed them with the last three models using the following equations respectively (Gonza´lez and Pliego-Cuervo, 2014;Wang et al, 2013)…”

Section: Adsorption Isotherm Studymentioning

confidence: 99%

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Comparative biosorption study of Hg (II) using raw and chemically activated almond shell

Taha

Moustafa

Abdel-Rahman

et al. 2017

Adsorption Science & Technology

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This work presents a comparison between the biosorption of Hg (II) by raw almond shell and activated almond shell. Almond shell based activated carbon has been obtained by physicochemical activation. Batch biosorption results confirmed that, activating condition has a strong influence on the final biosorption process. The biosorbent was characterized using scanning electron microscopy and Fourier transform infrared spectroscopy. To optimize the biosorption conditions pH, adsorbent dose, initial concentration, contact time, stirring speed, and temperature on Hg (II) removal were studied. The optimum conditions for maximum Hg (II) was achieved at 20 and 10 min for raw almond shell and activated almond shell, respectively. The equilibrium data were described well by Langmuir, Freundlich, Dubinin-Radushkevich isotherm models and appling a test of model fitness. Best fit of Langmuir and Freundlich models were found for experimental data, which reveal the homogenous surface of raw almond shell and the heterogeneity of activated almond shell surface. The kinetic data had been divided into either pseudo first order or second order on the basis of the best fit obtained from calculations, confirmed by a test of kinetic validity. An industrial application was examined to improve high biosorption capacity of raw and activated almond shells toward Hg (II).

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Development of Full Zinc‐Ion Batteries

2024

Aqueous Zinc Ion Batteries

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Adsorption of Cd(II), Hg(II) and Zn(II) from aqueous solution using mesoporous activated carbon produced from Bambusa vulgaris striata

Cited by 91 publications

References 48 publications

Enhanced Adsorption of Mercury(II) and Cadmium(II) from Aqueous Solution onto Rice Bran Modified with Chelating Ligands

Enhanced Adsorption of Mercury(II) and Cadmium(II) from Aqueous Solution onto Rice Bran Modified with Chelating Ligands

Comparative biosorption study of Hg (II) using raw and chemically activated almond shell

Development of Full Zinc‐Ion Batteries

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