Influence of temperature on ion-exchange equilibrium accompanied by complex formation in resins

Иванов, В. А.; Горшков, В. И.; Timofeevskaja, V.D.; Дроздова, Н. В.

doi:10.1016/s1381-5148(97)00162-4

Cited by 15 publications

(4 citation statements)

References 21 publications

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“…Examples of endothermic ion exchange and even endothermic complexation can be found in the literature 26, 27. Ivanov et al also found an extremely weak influence of temperature on nickel adsorption on polyvinylpyridine 28…”

Section: Resultsmentioning

confidence: 96%

Fe²⁺ and Fe³⁺ adsorption on 2‐vinylpyridine–divinylbenzene copolymers and acrylonitrile–methyl methacrylate–divinylbenzene terpolymers

Rabelo

Silva

Alcântara

et al. 2003

J of Applied Polymer Sci

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ABSTRACT:The adsorption of Fe 2ϩ and Fe 3ϩ ions on 2-vinylpyridine-divinylbenzene copolymer and acrylonitrile-methyl methacrylate-divinylbenzene terpolymer was investigated. In general, the adsorption of Fe 2ϩ and Fe 3ϩ in both resins increased with the enhancement of hydrochloric acid and metal concentration. The metal adsorption on the terpolymer increased sharply with the addition of small portions of ethanol, whereas the adsorption on the copolymer practically was not affected by the presence of the alcohol. An increase in temperature produced a small increase in iron adsorption for both resins. Fourier transform infrared spectra showed that nitrile and ester groups of the terpolymer did not suffer hydrolysis during metal adsorption, even for the highest HCl concentration and the highest temperature applied. A mechanism of iron adsorption through the ion exchange of chloride anions by tetrahedral [FeCl 4 ] 2Ϫ or [FeCl 4 ] Ϫ anions is proposed.

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Section: Resultsmentioning

confidence: 96%

Fe²⁺ and Fe³⁺ adsorption on 2‐vinylpyridine–divinylbenzene copolymers and acrylonitrile–methyl methacrylate–divinylbenzene terpolymers

Rabelo

Silva

Alcântara

et al. 2003

J of Applied Polymer Sci

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“…Temperature. It has been reported that temperature can significantly influence the equilibrium reaction of ion exchange [35]. The -PL desorption was conducted in 0.5 mol/L HCL at various temperatures for 6 h. No significant effects of temperature on the -PL desorption were observed (Figures 5(e) and 5(f)).…”

Section: Effects Of Desorptionmentioning

confidence: 84%

Optimization of Process Parameters forε-Polylysine Production by Response Surface Methods

Zhu¹,

Zhang

Liu³

et al. 2016

International Journal of Polymer Science

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ε-Polylysine (ε-PL) is a highly safe natural food preservative with a broad antimicrobial spectrum, excellent corrosion resistances, and great commercial potentials. In the present work, we evaluated theε-PL adsorption performances of HZB-3B and D155 resins and optimized the adsorption and desorption conditions by single-factor test, response surface method, and orthogonal design. The complexes of resin andε-PL were characterized by SEM and FITR. The results indicated that D155 resin had the bestε-PL adsorption performance and was selected for the separation and purification ofε-PL. The conditions for the static adsorption ofε-PL on D155 resin were optimized as follows:ε-PL solution 40 g/L, pH 8.5, resins 15 g/L, and absorption time 14 h. The adsorption efficiency ofε-PL under the optimal conditions was 96.84%. Theε-PL adsorbed on the D155 resin was easily desorbed with 0.4 mol/L HCl at 30°C in 10 h. The highest desorption efficiency was 97.57% and the overall recovery ofε-PL was 94.49% under the optimal conditions. The excellentε-PL adsorption and desorption properties of D155 resin including high selectivity and adsorption capacity, easy desorption, and high stability make it a good candidate for the isolation ofε-PL from fermentation broths.

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“…Ivanov et al () also studied the influence of temperature on ion exchange equilibrium using ionic exchange resins. It was shown that the selectivity of cation exchange resin usually decreased insignificantly with temperature in the case of exchange of equally charged cations and increased in the case of the exchange of monovalent and divalent cations.…”

Section: Introductionmentioning

confidence: 99%

“…Extensive work was done by previous researchers to study the concentration and temperature effect on ion exchange systems (Heumann and Baier, 1982;Adachi et al, 1989;Shuji et al, 1996) for computing the distribution coefficient values and to study the temperature effect on cation exchange equilibrium (Bonner and Smith, 1957a,b;Muraviev et al, 1998;Ivanov et al, 2006). Ivanov et al (1998) also studied the influence of temperature on ion exchange equilibrium using ionic exchange resins. It was shown that the selectivity of cation exchange resin usually decreased insignificantly with temperature in the case of exchange of equally charged cations and increased in the case of the exchange of monovalent and divalent cations.…”

Section: Introductionmentioning

confidence: 99%

Modification of the AMX membrane surface: Temperature dependence of anion exchange equilibrium

2012

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In order to improve the selectivity of the AMX membrane, a polyethyleneimine (PEI) layer was adsorbed on its surface. Ion exchange isotherms of (Cl−/NO3−), (Cl−/SO42−) and (NO3−/SO42−), using a modified AMX membrane, were established at different temperatures (from 283 to 313 K), with a constant total concentration of 0.3 mol/L and neutral pH. The results obtained with the modified membrane in this range of temperature show that chloride was the most sorbed and the selectivity order was Cl− > NO3− > SO42−. Selectivity coefficients and thermodynamic equilibrium constants, determined for the three binary systems, increased with increasing temperature. These results were compared with those obtained with the unmodified membrane. It was observed that for the modified membrane, the selectivity towards sulphate ion decreased and the modified membrane became more selective towards monovalent anions. Ion exchange equilibrium at temperatures 283, 298 and 313 K of the studied binary systems were found to be endothermic processes.

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Influence of temperature on ion-exchange equilibrium accompanied by complex formation in resins

Cited by 15 publications

References 21 publications

Fe²⁺ and Fe³⁺ adsorption on 2‐vinylpyridine–divinylbenzene copolymers and acrylonitrile–methyl methacrylate–divinylbenzene terpolymers

Fe²⁺ and Fe³⁺ adsorption on 2‐vinylpyridine–divinylbenzene copolymers and acrylonitrile–methyl methacrylate–divinylbenzene terpolymers

Optimization of Process Parameters forε-Polylysine Production by Response Surface Methods

Modification of the AMX membrane surface: Temperature dependence of anion exchange equilibrium

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Influence of temperature on ion-exchange equilibrium accompanied by complex formation in resins

Cited by 15 publications

References 21 publications

Fe2+ and Fe3+ adsorption on 2‐vinylpyridine–divinylbenzene copolymers and acrylonitrile–methyl methacrylate–divinylbenzene terpolymers

Fe2+ and Fe3+ adsorption on 2‐vinylpyridine–divinylbenzene copolymers and acrylonitrile–methyl methacrylate–divinylbenzene terpolymers

Optimization of Process Parameters forε-Polylysine Production by Response Surface Methods

Modification of the AMX membrane surface: Temperature dependence of anion exchange equilibrium

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Product

Resources

About

Fe²⁺ and Fe³⁺ adsorption on 2‐vinylpyridine–divinylbenzene copolymers and acrylonitrile–methyl methacrylate–divinylbenzene terpolymers

Fe²⁺ and Fe³⁺ adsorption on 2‐vinylpyridine–divinylbenzene copolymers and acrylonitrile–methyl methacrylate–divinylbenzene terpolymers