A new, low-cost adsorbent: Preparation, characterization, and adsorption behavior of Pb(II) and Cu(II)

Huang, Gailing; Wang, Dong; Ma, Shulan; Chen, Junli; Jiang, Ling; Wang, Peiyuan

doi:10.1016/j.jcis.2014.12.099

Cited by 128 publications

(37 citation statements)

References 63 publications

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“…This result indicated that the adsorption of Cd(II) was based on the chemisorption process, which could be a rate-limiting step [32]. Similar results have been reported for the adsorption of Cu(II) by chromotropic acid-intercalated Zn-Al-LDH [33] and Pb(II) or Cu(II) by sulfonated lignin-intercalated Mg 2 Al-LS-LDH [34]. As seen in Table 1, the k 2 values of Cd(II) adsorption on Mg-Al-CO 3 -LDH (0.0591 g/(mg min)) were significantly greater than on magnetic Fe 3 O 4 /Mg-Al-CO 3 -LDH (0.00177 g/(mg min)).…”

Section: Adsorption Kineticssupporting

confidence: 81%

Adsorption of Cd(II) by Mg–Al–CO3- and magnetic Fe3O4/Mg–Al–CO3-layered double hydroxides: Kinetic, isothermal, thermodynamic and mechanistic studies

Shan

Yan

Yang

et al. 2015

Journal of Hazardous Materials

259

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Section: Adsorption Kineticssupporting

confidence: 81%

Adsorption of Cd(II) by Mg–Al–CO3- and magnetic Fe3O4/Mg–Al–CO3-layered double hydroxides: Kinetic, isothermal, thermodynamic and mechanistic studies

Shan

Yan

Yang

et al. 2015

Journal of Hazardous Materials

259

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“…Adsorption of pollutants using commercial activated carbon has gotten wide acceptance due to its simplicity of operation viz-a-viz ability to remove very low concentration of pollutants (El Haddad et al 2013;Huang et al 2015). Precursors employed in the preparation of commercial activated carbon renders it very expensive.…”

Section: Introductionmentioning

confidence: 99%

Liquid phase adsorptions of Rhodamine B dye onto raw and chitosan supported mesoporous adsorbents: isotherms and kinetics studies

2016

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Irvingia gabonensis endocarp waste was charred (DNc) and subsequently coated with chitosan (CCDNc). Physicochemical characteristics of the two adsorbents were established, while Fourier transform infrared (FTIR), Scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) surface area methods were further employed for characterization. Efficiencies of the prepared adsorbents in the uptake of Rhodamine B (RhB) from aqueous effluent were investigated and adsorption data were tested using four isotherms and four kinetics models. The BET surface areas of the prepared adsorbent were 0.0092 and 4.99 m 2 /g for DNc and CCDNc, respectively, and maximum adsorption was recorded at pH between 3 and 4, respectively. While monolayer adsorption dominates the uptake of RhB onto DNc, uptake of RhB onto CCDNc was onto heterogeneous surface. The maximum monolayer adsorption capacities (q max) obtained from the Langmuir equation are 52.90 and 217.39 mg/g for DNc and CCDNc, respectively. Pseudo second order and Elovich kinetic models well described the kinetics of the two adsorption processes. The mean sorption energy (E) calculated from the D-R model and desorption efficiencies suggests that while the uptake of RhB onto DNc was physical in nature, for RhB-CCDNc system chemisorption dominates.

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“…The comparison of maximum adsorption capacity of these LDHs for Cu(II) in a present study with that of another adsorbents in previous literatures [39] are presented in Table 5. Moreover, Table 6 shows the comparison of adsorption capacity of Pb(II) by other adsorbents reported in the literature.…”

Section: Comparison Of the Adsorption Capacities Of The Materials Witmentioning

confidence: 78%

Adsorption of Heavy Metals on Layered Double Hydroxides (LDHs) Intercalated with Chelating Agents

Kano¹,

Zhang²

2019

Advanced Sorption Process Applications

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Layered double hydroxides (LDHs) are lamellar ionic compounds containing a positively charged layer and exchangeable anions in the interlayer. In this study, LDHs intercalated with chelating agents were synthesized by anion exchange reaction. The materials synthesized in this work were characterized by chemical analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and powder X-ray diffraction (XRD) to confirm their properties. Adsorption experiments from aqueous solutions containing known amounts of some heavy metallic ions onto the adsorbent were explored in a batch system. The amount of metallic ions adsorbed by LDHs intercalated with EDTA and precursor LDHs were determined by inductively coupled plasma-atomic emission spectrometry (ICP-AES) and atomic absorption spectrometry (AAS). In order to examine the adsorption capacity of LDHs intercalated with chelating agents, the adsorption experiment was investigated under the optimum condition. The data were applied to Langmuir and Freundlich isotherm models. The pseudo-second-order kinetic model was more adequate to describe the kinetic in this case. LDHs intercalated with chelating agents synthesized in this work can be promising adsorbents for heavy metals. It is very significant information from the viewpoint of environmental protection.

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A new, low-cost adsorbent: Preparation, characterization, and adsorption behavior of Pb(II) and Cu(II)

Cited by 128 publications

References 63 publications

Adsorption of Cd(II) by Mg–Al–CO3- and magnetic Fe3O4/Mg–Al–CO3-layered double hydroxides: Kinetic, isothermal, thermodynamic and mechanistic studies

Adsorption of Cd(II) by Mg–Al–CO3- and magnetic Fe3O4/Mg–Al–CO3-layered double hydroxides: Kinetic, isothermal, thermodynamic and mechanistic studies

Liquid phase adsorptions of Rhodamine B dye onto raw and chitosan supported mesoporous adsorbents: isotherms and kinetics studies

Adsorption of Heavy Metals on Layered Double Hydroxides (LDHs) Intercalated with Chelating Agents

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