Removal of Some Heavy Metal Ions Using Grafted Polyurethane Foam

Meligi, Gamal A.

doi:10.1080/03602550701581175

Cited by 20 publications

(6 citation statements)

References 15 publications

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“…Meligi et al grafted PU foam to monomers in order to obtain PU foam that can adsorb heavy metals. [ 11 ] El‐Shahat et al investigated the Cd 2+ adsorption of Nile blue grafted PU foam. [ 12 ] Hong et al made PU foam as the substrate where carboxymethlyated cellulose nanofibrils were embedded, thereby produced highly efficient and durable materials to adsorb heavy metals.…”

Section: Introductionmentioning

confidence: 99%

A study on modified fabric‐contained melamine/bentonite polyurethane foam: Pb²⁺ adsorption and mechanical properties

Zhang

Lin

et al. 2023

Polymer Composites

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In this study, a porous composite foam with excellent adsorption property toward Pb2+ was obtained by combining modified polyester (PET) fabric with polyurethane (PU) foam and using melamine and bentonite as modifiers. The effects of bentonite content on the adsorption and mechanical property of the modified fabric were studied. Based on the position of the modified PET fabric in porous PU foam, the P‐PU and PU‐P‐PU composite foams are prepared, and the effects of the fabric‐foam interface structure on the mechanical properties and adsorption properties were investigated. Effects of different experimental conditions such as pH value, contact time and initial dye concentration on adsorption capacity were investigated, and kinetic and isotherm of adsorption were used to analyze the adsorption mechanism of Pb2+ by foam. It was found that the porous composite foam have outstanding mechanical property and high adsorption efficiency. The adsorption was well‐described by pseudo‐second‐order kinetic and Langmuir isotherm models. Thus, the porous composite foam has great promise in removing heavy metal ions from water.

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Section: Introductionmentioning

confidence: 99%

A study on modified fabric‐contained melamine/bentonite polyurethane foam: Pb²⁺ adsorption and mechanical properties

Zhang

Lin

et al. 2023

Polymer Composites

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“…Research on graft and composite foam systems have established their efficiency to treat heavy metal ions [10][11][12]. Polyurethane foams modified by grafting acrylo nitrile and acrylic acid by gamma irradiation method reported by Meligi [10] have shown that the adsorption of heavy metal ions like Zn(II), Fe(II), Ca(II), Ni(II), Cu(II) and Pb(II) were affected by pH, atomic weight and initial contaminant concentration. In a study by Jang et al [11], hydroxyapatite (HAP)polyurethane foams were synthesized for Pb 2+ ion adsorption.…”

Section: Introductionmentioning

confidence: 99%

Structurally Functionalized Polyurethane Foam for Elimination of Lead Ions from Drinking Water

Abu‐Zahra¹,

Gunashekar²

2014

J. Res. Updates Polym. Sci.

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Polyurethane foams functionalized with Sulfonic acid groups have been found to be strong cation exchangers. This novel property of the foam was used to exchange lead (Pb 2+ ) ions from aqueous solutions. Polyurethane foam synthesis is based on addition polymerization of the highly reactive isocyanate (-NCO) groups of an isocyanate with the hydroxyl (-OH) groups of a polyol to form the urethane species. Toluene-2,4-2,6-diisocyanate was reacted with Polypropylene glycol 1200 in 2:1 molar ratio to form a linear pre-polymer. The linear pre-polymer was further polymerized using a chain extender, N, N-bis (2-hydorxyethyl)-2-aminoethane-sulfonic acid (BES). BES also acts as a functional group to exchange Pb 2+ ions. A set of experiments were designed to study various process parameters. The functionalized polyurethane foam was characterized by Fourier transform infrared spectroscopy, gel permeation chromatography, scanning electron microscopy, and energy dispersive x-ray spectroscopy. The Pb 2+ ion exchange capacity was determined using an Inductively Coupled Plasma Mass Spectrometer. The maximum Pb 2+ ion exchange capacity of the foam was found to be 47 parts per billion per gram (ppb/g) from a 100 parts per billion (ppb) Pb 2+ solution over a period of 60 minutes. A multistage batch filtration process increased the Pb 2+ ion removal to 50-54 ppb/3g of foam over a period of 90 minutes.

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“…Research on graft and composite foam systems have established their efficiency to treat heavy metal ions. 10–12 Polyurethane foams modified by grafting acrylonitrile and acrylic acid by gamma irradiation method reported by Meligi 10 have shown that the adsorption of heavy metal ions like Zn(II), Fe(II), Ca(II), Ni(II), Cu(II), and Pb(II) were affected by pH, atomic weight, and initial contaminant concentration. In a study by Jang et al., 11 hydroxyapatite (HAP)–polyurethane foams were synthesized for Pb 2+ ion adsorption.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of functionalized polyurethane foam using BES chain extender for lead ion removal from aqueous solutions

Gunashekar

Abu‐Zahra

2014

Journal of Cellular Plastics

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Polyurethane foams functionalized with sulphonic acid groups have been found to be strong cation exchangers. This novel property of the foam was used to exchange lead (Pb2+) ions from aqueous solutions. Polyurethane foam synthesis is based on addition polymerization of an isocyanate (–NCO) with a polyol. The primary reaction is due to the reaction of the highly reactive –NCO groups of the isocyanate with the hydroxyl (–OH) groups of the polyol to form the urethane species. Toluene-2,4-diisocyanate,2,6-diisocyanate (CAS: 584-84-9) was reacted with polypropylene glycol 1200 (CAS 25322-69-4) in 2:1 molar ratio to form a linear pre polymer. The linear pre-polymer was further polymerized using N,N-bis(2-hydorxyethyl)-2-aminoethane-sulfonic acid (CAS 10191-18-1) chain extender. An organotin catalyst was used to accelerate the reaction and distilled water was used as a foaming agent to synthesize the functionalized polyurethane foam. The synthesized foam has an open cell content ranging from 70% to 91% and the density ranges from 160 to 432 kg/m3 depending on the foam formulation. The foam was exposed to Pb2+ solutions of known concentrations by batch process. The amount of remaining Pb2+ in the solution in parts per billion (ppb) was determined using an inductively coupled plasma mass spectrometer. The maximum Pb2+ ions exchanged per gram of the foam was measured to be 50–54 ppb from a 100 ppb Pb2+ solution over a period of 90 min. In this paper, we present the foam synthesis procedure with the design of experiments to study the effect of processing variables on the performance of this material.

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Removal of Some Heavy Metal Ions Using Grafted Polyurethane Foam

Cited by 20 publications

References 15 publications

A study on modified fabric‐contained melamine/bentonite polyurethane foam: Pb²⁺ adsorption and mechanical properties

A study on modified fabric‐contained melamine/bentonite polyurethane foam: Pb²⁺ adsorption and mechanical properties

Structurally Functionalized Polyurethane Foam for Elimination of Lead Ions from Drinking Water

Synthesis of functionalized polyurethane foam using BES chain extender for lead ion removal from aqueous solutions

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Removal of Some Heavy Metal Ions Using Grafted Polyurethane Foam

Cited by 20 publications

References 15 publications

A study on modified fabric‐contained melamine/bentonite polyurethane foam: Pb2+ adsorption and mechanical properties

A study on modified fabric‐contained melamine/bentonite polyurethane foam: Pb2+ adsorption and mechanical properties

Structurally Functionalized Polyurethane Foam for Elimination of Lead Ions from Drinking Water

Synthesis of functionalized polyurethane foam using BES chain extender for lead ion removal from aqueous solutions

Contact Info

Product

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About

A study on modified fabric‐contained melamine/bentonite polyurethane foam: Pb²⁺ adsorption and mechanical properties

A study on modified fabric‐contained melamine/bentonite polyurethane foam: Pb²⁺ adsorption and mechanical properties