Removal of Pb(II) from aqueous solution using dithiocarbamate modified chitosan beads with Pb(II) as imprinted ions

Liu, Bingjie; Lv, Xin; Meng, Xia; Yu, Guangli; Wang, Dongfeng

doi:10.1016/j.cej.2013.01.071

Cited by 130 publications

(50 citation statements)

References 45 publications

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“…algaecides and NO-trapping agents [24,25,26]. They are used as effective antidotes for cadmium intoxication [19]. Apart from their use in material science, they are also used as linkers for the improvement of electron transfer properties in molecular wire junctions [27].…”

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confidence: 99%

“…Different techniques have been used for the removal of dissolved and suspended heavy metals from polluted water. These include chemical precipitation-filtration, ion exchange, reverse osmosis, oxidation-reduction, solvent extraction, adsorption, cementation, plant leaf extraction, electrochemical treatment technologies and membrane separation [4,14,15,16,17,18,19].…”

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confidence: 99%

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Removal efficiency of Pb, Cd, Cu and Zn from polluted water using dithiocarbamate ligands

Abu‐El‐Halawa

Zabin

2017

Journal of Taibah University for Science

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Presently, there is increased attention and focus on heavy metals, which are becoming one of the most serious environmental problems due to their adverse health effects. These toxic heavy metals are not easily degraded and require removal from polluted water to protect people and the environment. The purpose of this work was to prepare two types of dithiocarbamate ligands, one aliphatic (diethyldithiocarbamate) and the other aromatic (diphenyldithiocarbamate), and to use them as chelators to remove Pb, Cd, Cu and Zn from polluted water. Dithiocarbamates were selected because they have good binding ability and can precipitate metal ions as complexes.The metal removal efficiency is compared between both ligands and also compared to the efficiency of activated carbon in an adsorption process to remove the same metals.The investigation results indicated that the diphenyldithiocarbamate ligand was more efficient in removing the studied metals than the diethyldithiocarbamate analogues.Additionally, the metal removal efficiency of the diphenyldithiocarbamate ligand was more effective than using the activated carbon method.

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confidence: 99%

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confidence: 99%

Removal efficiency of Pb, Cd, Cu and Zn from polluted water using dithiocarbamate ligands

Abu‐El‐Halawa

Zabin

2017

Journal of Taibah University for Science

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“…48 The values of R L for adsorption of Cd 21 , Pb 21 , and Cu 21 on the TM-HPS at the studied temperatures are all in the range of 0 < R L < 1 ( Table II 49 The value of R L decreased with increasing temperature, which indicated an increase of the affinity between the metal ions and the TM-HPS.…”

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confidence: 99%

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

Yang

Huang

Yao

et al. 2017

J of Applied Polymer Sci

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A hyper-crosslinked resin chemically modified with thiourea (TM-HPS) was synthesized, characterized, and evaluated for the removal of heavy metal ions (Pb 21 , Cd 21 , and Cu 21 ) from aqueous solutions. The structural characterization results showed that a few thiourea groups were grafted on the surface of the resin with a big BET surface area and a large number of narrow micropores.Various experimental conditions such as pH, contact time, temperature, and initial metal concentration of the three heavy metal ions onto TM-HPS were investigated systematically. The results indicated that the prepared resin was effective for the removal of the heavy metal ions from aqueous solutions. The isotherm data could be better fitted by Langmuir model, yielding maximum adsorption capacities of 689.65, 432.90, and 290.69 mg/g for Pd 21 , Cd 21 , and Cu 21 , respectively. And the adsorption kinetics of the three metal ions followed the pseudo-second-order equation. FTIR and XPS analysis of TM-HPS before and after adsorption further revealed that the adsorption mechanism could be a synergistic effect between functional groups and metal ions and electrostatic attraction, which may provide a new insight into the design of highly effective adsorbents and their potential technological applications for the removal of heavy metal ions from aqueous solutions.

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“…Separation factors for Fe(III) and Zr(IV) over Zn(II) at around pH 2, derived from individual adsorption isotherm by fitting a linear curve, suggested that there was an excellent selectivity for transition metals over alkaline/alkaline earths. The selectivity of a bio-based dithiocarbamate modified chitosan, using Pb(II) as imprinted ions and the non-imprinted beads for lead ions over other metal ions were evaluated from the selectivity coefficient, defined as the ratio of the distribution ratios of the Pb(II) ions and other coexistent metal ions [24]. Cross-linked imprinted chitosan polymer has been recently prepared from chitosan, using citric acid-cadmium complex as template and glutaraldehyde as the cross-linker [25].…”

Section: Selectivitymentioning

confidence: 99%

New Biosorbent Materials: Selectivity and Bioengineering Insights

Kyzas

Matis

2014

Processes

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Many researchers have studied the biosorption of different pollutants. However, a quite limited number of works focus on selectivity, which may be characterized as specific property for each biosorbent. Two main criteria need to be adopted for the selection and synthesis of modern biosorbents, such as their rebinding capacity and selectivity for only one target, molecule, ion, etc. Selective biosorption could be achieved using in synthesis an innovative technique termed molecular imprinting; the idea applied through specific polymers (Molecular Imprinted Polymers (MIPs)) was used in many fields, mainly analytical. In the present work, also isotherm and kinetic models were reviewed highlighting some crucial parameters, which possibly affect selectivity. A critical analysis of the biosorption insights for biosorbents, mostly selective, describes their characteristics, advantages and limitations, and discusses various bioengineering mechanisms involved.

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Removal of Pb(II) from aqueous solution using dithiocarbamate modified chitosan beads with Pb(II) as imprinted ions

Cited by 130 publications

References 45 publications

Removal efficiency of Pb, Cd, Cu and Zn from polluted water using dithiocarbamate ligands

Removal efficiency of Pb, Cd, Cu and Zn from polluted water using dithiocarbamate ligands

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

New Biosorbent Materials: Selectivity and Bioengineering Insights

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