Ion-exchange properties of 2,2'-dihydroxybiphenyl - urea - formaldehyde terpolymer resins

Jadhao, Manjusha M.; Paliwal, L. J.; Bhave, N. S.

doi:10.1016/j.desal.2008.07.020

Cited by 24 publications

(27 citation statements)

References 23 publications

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“…Some 2,2 0 -dihydroxybiphenyl moieties containing polymers have been reported in the literature. 21,22 Hence, with all these facts in mind and in continuation of our earlier work on terpolymers, [23][24][25][26][27] in this article, we report the synthesis and physicochemical studies of a new biphenol-guanidine-formaldehyde terpolymer resin.…”

Section: Introductionmentioning

confidence: 88%

Resin‐V: Synthesis and physicochemical studies of a biphenol–guanidine–formaldehyde terpolymer resin

Jadhao

Kumar

Paliwal

et al. 2010

J of Applied Polymer Sci

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A terpolymer resin was synthesized by the condensation of 2,2 0 -dihydroxybiphenyl with guanidine and formaldehyde in the presence of 2M HCl as a catalyst. The resin obtained was characterized on the basis of elemental analysis, infrared spectroscopy, NMR spectroscopy, ultraviolet-visible spectroscopy, and thermogravimetric analysis/differential thermal analysis. The number-average molecular weight was determined by nonaqueous conductometric titration. A thermal study of the resin was carried out to determine its mode of decomposition, activation energy, order of reaction, frequency factor, entropy change, free energy, and apparent entropy change. The FreemanCarroll and Sharp-Wentworth methods were applied for the calculation of the kinetic parameters, and the data from the Freeman-Carroll method were used to determine various thermodynamic parameters. The chelation ion-exchange properties of this resin were studied for Fe 3þ , Cu 2þ , Ni 2þ , Co 2þ , Zn 2þ , Cd 2þ , and Pb 2þ ions. A batch equilibrium method was used in the study of the selectivity of the metalion uptake that involved the measurements of the distribution of a given metal ion between the polymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in media of various ionic strengths. The terpolymer showed a higher selectivity for Fe 3þ ions than for the other metal ions in this study.

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Section: Introductionmentioning

confidence: 88%

Resin‐V: Synthesis and physicochemical studies of a biphenol–guanidine–formaldehyde terpolymer resin

Jadhao

Kumar

Paliwal

et al. 2010

J of Applied Polymer Sci

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“…Data of distribution ratio 'D' as a function of pH indicates that the relative amount of metal ion taken up by the terpolymer increases with rise in pH of medium (8,14). The magnitude of increase, however, is different for different metal cations.…”

Section: Distribution Ratios Of Metal Ions At Different Phmentioning

confidence: 96%

“…Hence, use of ligand or complexing agents has great utility for the separation of cations and anions from their admixtures. A batch equilibrium method has gained a rapid attention of researchers because of its acute degree of selectivity, variety of sorbent phases and enhanced hydrophilicity (8).…”

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confidence: 99%

Sorption Studies of Terpolymers Based onp-Nitrophenol, Triethylenetetramine, and Formaldehyde

Kalbende

Zade

2015

Separation Science and Technology

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Terpolymer resins have been synthesized by condensation of p-nitrophenol, triethylenetetramine and formaldehyde in presence of 2M NaOH as a catalyst with different molar proportions of monomers. Newly synthesized terpolymers were proved to be selective chelation ion-exchangers for metal ions like Fe 3+ , Cu 2+ , Ni 2+ , Co 2+ , Zn 2+ , Cd 2+ , Hg 2+ and Pb 2+ . A batch equilibrium study was carried out over a wide pH range, shaking time and in media of various ionic strengths of different electrolytes and shows higher selectivity for Hg 2+ , Cd 2+ and Pb 2+ . Distribution ratios of metal ions were found to be increased by increasing pH of solutions; hence the resins can be used to recover certain metals from waste solutions and removal of iron from boiler water.

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“…The distribution ratio for all the metal ions depends upon their stability constants of the complexation during the ion-exchange process. [28][29][30] The higher the distribution ratio of the metal ions, higher will be the stability constants of the ligand and metal complexation. , and Pb 2+ form weak chelates over the wide range of pH variations.…”

Section: Effect Of the Distribution Of Metal Ion Uptake At Different mentioning

confidence: 99%

Synthetic functionalized terpolymeric resin for the removal of hazardous metal ions: synthesis, characterization and batch separation analysis

Azarudeen¹,

Ahamed²,

Thirumarimurugan³

et al. 2015

Polym. Adv. Technol.

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An effectual functionalized synthetic resin involving anthranilic acid/4-nitroaniline/formaldehyde was synthesized for the detoxification of hazardous metal ions. The resin was characterized by Fourier transform infrared, 1 H, and 13 C nuclear magnetic resonance spectroscopy, and its morphology was established through scanning electron microscope and X-ray diffraction. The resin was analyzed by thermogravimetric analysis to assess the thermal stability, in which the resin could be used in high temperature aqueous solutions for the elimination of harmful metal ions. The ion-exchange property of the resin was evaluated by batch technique for specific metal ions viz. Fe . The study was extended to three variations such as effect of metal ion uptake in the presence of various electrolytes in different concentrations, effect of pH, and effect of contact time. The outcome proved that the resin can be used as a strong cation-exchanger to remove various metal ions from the solutions. The resin could be regenerated and reused with quantitative recovery of metal ions for few cycles. On comparison with the earlier reported resins, the synthesized resin has found excellent capability of metal ion recovery. The resin possesses an utmost ion-exchange capacity, which is in good harmony with isotherm models and kinetics.

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Ion-exchange properties of 2,2'-dihydroxybiphenyl - urea - formaldehyde terpolymer resins

Cited by 24 publications

References 23 publications

Resin‐V: Synthesis and physicochemical studies of a biphenol–guanidine–formaldehyde terpolymer resin

Resin‐V: Synthesis and physicochemical studies of a biphenol–guanidine–formaldehyde terpolymer resin

Sorption Studies of Terpolymers Based onp-Nitrophenol, Triethylenetetramine, and Formaldehyde

Synthetic functionalized terpolymeric resin for the removal of hazardous metal ions: synthesis, characterization and batch separation analysis

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