Anion exchange studies of lead-EDTA complexes

Dudzińska, Marzenna R.; Clifford, Dennis

doi:10.1016/0923-1137(91)90287-x

Cited by 35 publications

(14 citation statements)

References 4 publications

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“…Pioneer work on the removal of heavy metal ions was initiated by Dudzinska and Juang [9,10] by using complex agents such as nitrilotriacetic acid (NTA), citric acid (CA), and ethylenediaminetetraacetic acid (EDTA). In particular, EDTA has been proven as an effective chelating agent for heavy metal decontamination [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effective removal of heavy metals from industrial sludge with the aid of a biodegradable chelating ligand GLDA

Cui

et al. 2015

Journal of Hazardous Materials

169

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Section: Introductionmentioning

confidence: 99%

Effective removal of heavy metals from industrial sludge with the aid of a biodegradable chelating ligand GLDA

Cui

et al. 2015

Journal of Hazardous Materials

169

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“…Especially metal ion-chelate complexes, which are produced in the manufacturing process of printed circuit boards and the electroplating industry, are so strong that they often solubilize toxic metal ions in wastewater. Their removal by the usual precipitation processes and ion exchange methods [8] is difficult. However, the highly stable oligo(ethylene amine) 1OEA1 ligands which were immobilized to polyacrylamide have been reported to remove the metal-chelated complexes efficiently from aqueous waste, as Matejka et al reported.…”

Section: Introductionmentioning

confidence: 99%

Study on Metal Ion Adsorption of Bifunctional Chelating/Ion-Exchange Resins

Wang¹,

Chang

Chen

2001

Macromol. Chem. Phys.

126

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Ion‐exchange resin has been considered as a suitable material for the recovery of heavy metals in water treatment. The chelating group, iminodiacetic acid (—R—N(CH2COOH)2), was introduced into the weak‐acid type (—R(COOH)—)n—) ion‐exchange resin to obtain bifunctional ion‐exchange resins. Chromic, cupric, cadmium and lead ions were employed for adsorption experiments in this study. In isothermal experiments, the order of heavy metal ion adsorption decreased with increasing diameter of the heavy metal ion when the chelating group content was less than half. On the contrary, the adsorbed amount of lead ion would be higher than that of cadmic ion as the quantity of chelating group content was more than half owing to the stability constant difference (Ks[Pb2+] = 1017.5 > Ks[Cd2+] = 105.71 in iminodiacetic acid). The adsorption efficiency of bifunctional ion‐exchange resins, especially for lead ions, would increase with rising chelating group content (from 0.08 mmol/mmol COOH to 0.31 mmol/mmol COOH). Meanwhile, the working pH range for metal ion adsorption in bifunctional ion‐exchange resins was extended from 2.5 down to 0.5. Addition of chelating groups to weak acid ion‐exchange resins could increase the adsorption efficiency for metal ions owing to the increased free volume of polymer structure.

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“…Treatment of these wastewaters depends greatly on the particular complexing agents and metal ions used as well as their concentrations. In general, they are grouped into three categories: chemical, physical, and electrochemical 2–10. The disadvantages of two‐phase separation can be avoided by using water‐soluble polymeric reagents in combination with membrane filtration 11–12.…”

Section: Introductionmentioning

confidence: 99%

Complexes of Water‐Soluble Polymers with Cu²⁺ and Ag⁺ as Antibacterial Agents

Rivas

Pereira

Gúzman

et al. 2011

Macromolecular Symposia

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The potential application of polymers in the biomedical area is huge, especially as antimicrobial agent. We studied the recovery of metal ions (silver and copper) with a known antibacterial activity. Using the liquid-phase polymer-based retention, LPR, technique it was generated the polymer-metal complexes from these metal ions. Their antibacterial activity was studied for gram-positive and gramnegative bacteria. The results indicated that the anionic polymers easily yield polymer-metal complexes with increased antibacterial activity with respect to their polymers. Cationic polymers demonstrated efficient antibacterial activity, and the polymer metal-complexes, PMC, showed similar antibacterial results. Neither system presented a genotoxic effect.

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Anion exchange studies of lead-EDTA complexes

Cited by 35 publications

References 4 publications

Effective removal of heavy metals from industrial sludge with the aid of a biodegradable chelating ligand GLDA

Effective removal of heavy metals from industrial sludge with the aid of a biodegradable chelating ligand GLDA

Study on Metal Ion Adsorption of Bifunctional Chelating/Ion-Exchange Resins

Complexes of Water‐Soluble Polymers with Cu²⁺ and Ag⁺ as Antibacterial Agents

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Anion exchange studies of lead-EDTA complexes

Cited by 35 publications

References 4 publications

Effective removal of heavy metals from industrial sludge with the aid of a biodegradable chelating ligand GLDA

Effective removal of heavy metals from industrial sludge with the aid of a biodegradable chelating ligand GLDA

Study on Metal Ion Adsorption of Bifunctional Chelating/Ion-Exchange Resins

Complexes of Water‐Soluble Polymers with Cu2+ and Ag+ as Antibacterial Agents

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Product

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Complexes of Water‐Soluble Polymers with Cu²⁺ and Ag⁺ as Antibacterial Agents