Removal of lead ions from aqueous solutions using intercalated tartrate-Mg–Al layered double hydroxides

Yasin, Yamin; Mohamad, Maszlin; Saad, Ahmad Fadli; Sanusi, Azlin; Ahmad, Faujan Haji

doi:10.1080/19443994.2013.803935

Cited by 10 publications

(4 citation statements)

References 22 publications

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“…The q maxExp. value for Pb 2+ (Figure A and Table S14) investigated at initial concentrations (50–1000 ppm) was 346 mg/g, exceptionally higher than that for recently reported MoS 4 -LDH, sewage sludge biochar, edta-LDH, CTS/PAM gel, MgAl-NO 3 LDH, and CSAE-LGdH (290, 44.91, 180, 138.41, 3.2, and 83 mg/g, respectively; Table ). For Cu 2+ (Figure A and Table S15), q maxExp.…”

Section: Resultsmentioning

confidence: 57%

Fe-MoS₄: An Effective and Stable LDH-Based Adsorbent for Selective Removal of Heavy Metals

Ali¹,

Liang²,

Zhou³

et al. 2017

ACS Appl. Mater. Interfaces

143

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It has always been a serious challenge to design efficient, selective, and stable absorbents for heavy-metal removal. Herein, we design layered double hydroxide (LDH)-based Fe-MoS, a highly efficient adsorbent, for selective removal of heavy metals. We initially synthesized FeMgAl-LDH and then enriched its protective layers with MoS anions as efficient binding sites for heavy metals. Various characterization tools, such as X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, scanning electron microscopy, energy-dispersive X-ray, X-ray photoelectron spectroscopy (XPS), CHN analysis, and inductively coupled plasma analysis, were applied to confirm structural and compositional changes during the synthesis of Fe-MoS as final product. The prepared Fe-MoS offered excellent attraction for heavy metals, such as Hg, Ag, Pb, and Cu, and displayed selectivity in the order Hg ∼ Ag > Pb > Cu > Cr > As > Ni ∼ Zn ∼ Co. The immense capacities of Hg, Ag, and Pb (583, 565, and 346 mg/g, respectively), high distribution coefficient (K ∼ 10-10), and fast kinetics place Fe-MoS on the top of materials list known for removal of such metals. The sorption kinetics and isothermal studies conducted on Hg, Ag, Pb, and Cu suit well pseudo-second-order kinetics and Langmuir model, suggesting monolayer chemisorption mechanism through M-S linkages. XRD and FTIR studies suggested that adsorbed metals could result as coordinated complexes in LDH interlayer region. More interestingly, LDH structure offers protective space for MoS anions to avoid oxidation under ambient environments, as confirmed by XPS studies. These features provide Fe-MoS with enormous capacity, good reusability, and excellent selectivity even in the presence of huge concentration of common cations.

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Section: Resultsmentioning

confidence: 57%

Fe-MoS₄: An Effective and Stable LDH-Based Adsorbent for Selective Removal of Heavy Metals

Ali¹,

Liang²,

Zhou³

et al. 2017

ACS Appl. Mater. Interfaces

143

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“…The types of LDHs used to remove lead (Pb) from the aqueous solution are MgAl-NO 3 and Tartrate-MgAl. In this s tudy, the maximum lead adsorption capacity calculated by the Langmuir model is 8.4 and 3.2 mg g -1 for Tartrate-MgAl and MgAlNO 3 , respectively [13]. Yanming et al (2017) [14] s tudied the removal of Pb 2+ ions from an aqueous solution by glutamate intercalated in layered double hydroxide.…”

Section: Introductionmentioning

confidence: 80%

“…The use of the adsorption technique to remove heavy metals in aqueous solutions on different solid supports, especially on new materials such as anionic clays, has been the subject of much work [3,5,12]. Among the scientific results that use layered double hydroxides as adsorbents to remove lead are the s tudies of Yasin et al (2014) [13]. The types of LDHs used to remove lead (Pb) from the aqueous solution are MgAl-NO 3 and Tartrate-MgAl.…”

Section: Introductionmentioning

confidence: 99%

Analytical study on elimination of lead by anionic clays: Characterization, adsorption kinetics, isotherm, thermodynamic, mechanism and adsorption

Bahah

2023

Anal. Method Environ. Chem. J.

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The co-precipitation method synthesized the synthetic anionicMg–Al and Ni-Al clays with three molar ratios (Mg/Al, Ni/Al). The samples were characterized by powder XRD, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). No other crystalline phases were detected in the powder XRD patterns of the co-precipitated samples. The infrared spectra obtained all the functional groups that characterize these two types of anionic clays. SEM micrographs indicate the presence of particles and aggregates. The particles, or aggregates, are in the form of plates, supported by particles of acceptable sizes. The optimal pH for maximum lead adsorption is about 6.5 for both clays. The optimal adsorbent masses for the maximum percentages of lead removal are 0.2 g for Mg3AlCO3 and 0.25 g for Ni3AlCO3. The Mg3AlCO3 has a maximum adsorption capacity of lead, where qm=73.42 mg g-1. The adsorbed amount increases with increasing temperature for both types of clays studied. The equilibrium time of Pb2+ adsorption is reached after 5 min for both clays. The most appropriate models to describe the experimental data of adsorption kinetics and isotherms are pseudo-second-order and Langmuir. The detection limit (LOD) was 0.272 mg L-1. The linearity range was 1 to 5 mg L-1(R2 0.9997).

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“…The q m for MB exceeds the values of ZIF-67/CoAlLDH (57.24 mg/g [ 46 ]), NiFeLDH decorated montmorillonite (99.18 mg/g) [ 20 ], dodecyl sulfate modified ZnAl LDH (113.00 mg/g) [ 47 ], and spherical HC capped MgAlLDH (226.00 mg/g) [ 30 ]. For Pb(II) removal, the nanocomposite also outperforms the MgAlLDH (16.93 mg/g) [ 48 ], MgFeLDH (18.45 mg/g) [ 19 ], and tartrate intercalated MgAlLDH (8.40 mg/g) [ 49 ]. Therefore, the prepared HC–MgAlLDH nanocomposite exhibited a good removal performance for single CR, MB and Pb(II).…”

Section: Resultsmentioning

confidence: 99%

Efficient Removal of Congo Red, Methylene Blue and Pb(II) by Hydrochar–MgAlLDH Nanocomposite: Synthesis, Performance and Mechanism

et al. 2023

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Organic dyes and heavy metals often coexist in industrial effluents, and their simultaneous removal is a grand challenge. Herein, a hydrochar and MgAl layered double hydroxide (HC–MgAlLDH) nanocomposite was prepared via a facile one-step hydrothermal route, and applied to remove anionic Congo red (CR), cationic Methylene blue (MB) and Pb(II) from aqueous solutions. The nanocomposite was formed by interweaving amorphous HC and crystalline MgAlLDH nanoplates and possessed more functional groups, lower zeta potential and larger specific surface area than uncomposited MgAlLDH. Batch removal experiments showed that the components HC and LDH dominated the CR and MB removals, respectively, whereas Pb(II) removal was conjointly controlled by the two components. The maximum Langmuir removal capacities of the nanocomposite to sole CR, MB, or Pb(II) were 348.78, 256.54 or 33.55 mg/g. In binary and ternary systems, the removal capacities of CR and MB only slightly decreased, while the capacity of Pb(II) increased by 41.13–88.61%. The increase was related to the coordination of Pb(II) with the sulfur-containing groups in dyes and the precipitation of PbSO4. Therefore, the simultaneous removal of CR, MB and Pb(II) was involved in a synergistic effect, including electrostatic adsorption, π–π interaction, coordination and precipitation. The present work shows that the HC–MgAlLDH nanocomposite has great potential for wastewater integrative treatment.

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Removal of lead ions from aqueous solutions using intercalated tartrate-Mg–Al layered double hydroxides

Cited by 10 publications

References 22 publications

Fe-MoS₄: An Effective and Stable LDH-Based Adsorbent for Selective Removal of Heavy Metals

Fe-MoS₄: An Effective and Stable LDH-Based Adsorbent for Selective Removal of Heavy Metals

Analytical study on elimination of lead by anionic clays: Characterization, adsorption kinetics, isotherm, thermodynamic, mechanism and adsorption

Efficient Removal of Congo Red, Methylene Blue and Pb(II) by Hydrochar–MgAlLDH Nanocomposite: Synthesis, Performance and Mechanism

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Removal of lead ions from aqueous solutions using intercalated tartrate-Mg–Al layered double hydroxides

Cited by 10 publications

References 22 publications

Fe-MoS4: An Effective and Stable LDH-Based Adsorbent for Selective Removal of Heavy Metals

Fe-MoS4: An Effective and Stable LDH-Based Adsorbent for Selective Removal of Heavy Metals

Analytical study on elimination of lead by anionic clays: Characterization, adsorption kinetics, isotherm, thermodynamic, mechanism and adsorption

Efficient Removal of Congo Red, Methylene Blue and Pb(II) by Hydrochar–MgAlLDH Nanocomposite: Synthesis, Performance and Mechanism

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Product

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Fe-MoS₄: An Effective and Stable LDH-Based Adsorbent for Selective Removal of Heavy Metals

Fe-MoS₄: An Effective and Stable LDH-Based Adsorbent for Selective Removal of Heavy Metals