Equilibrium and rate studies of cation-exchange with monofunctional resins

Hale, D. K.; Reichenberg, D.

doi:10.1039/df9490700079

Cited by 57 publications

(22 citation statements)

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“…2 show the relationship between the amount of Na+ ion taken up by the resin and the pH (Hale & Reichenberg, 1949;Topp & Pepper, 1949). It will be observed that the rapid rise in the elution volume of cytochrome in sodium buffers occurs over the same pH range as the rapid fall in the amount of Nae retained by the resin from buffers of comparable concentration.…”

Section: Discussionmentioning

confidence: 99%

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Separation of neutral proteins on ion‐exchange resins

Boardman

Partridge

1954

J. Polym. Sci.

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The effect of pH of buffer on the adsorption of cytochrome C on the ion exchange resin IRC 50 has been studied in detail and the information gained has been used to predict conditions for the separation of neutral proteins such as the hemoglobins. The behavior of a protein on the resin is markedly different from that of ampholytes of low molecular weight such as the basic amino acids. The basic amino acids are desorbed as the pH falls below 5 due to suppression of the ionization of the resin carboxyl groups, but the adsorption of protein is greatly increased under acidic conditions. It is suggested that this is due to a large increase in secondary short‐range forces. Sheep fetal CO hemoglobin has been separated from bovine CO hemoglobin and bovine CO hemoglobin from bovine methemoglobin. The eluting buffer was citrate of pH 5.81 and 5.92, respectively, and Na+ concentration 0.34 g. ions per liter. In initial experiments, heavy losses of the CO hemoglobins occurred which was most probably due, to a large extent, to the formation of methemoglobin. To obtain good yields, it is necessary to work at a temperature near 0°C. and to use freshly prepared proteins.

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Section: Discussionmentioning

confidence: 99%

“…As shown by Hale & Reichenberg (1949) the ionization of the resin is completely suppressed at pH 3 and the resin does not exhibit its full capacity for Na+ (9-2 m-equiv./g.) below pH 8 or 9 (see Fig.…”

Section: Aamentioning

confidence: 93%

Separation of neutral proteins on ion‐exchange resins

Boardman

Partridge

1954

J. Polym. Sci.

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“…In this section we discuss a simple analytical isotherm model that was originally developed by Hale and Reichenberg (1949). Their model consists of the following three basic elements:…”

Section: Simple Analytical Isotherm Modelmentioning

confidence: 99%

“…The above model is analytic and the model along with its derivation is provided in Appendix C. This model is limited to monofunctional exchangers where only one counter-ion is being addressed. Hale and Reichenberg (1949) looked at the H-Na equilibrium performance of two well defined monofunctional resins of their time:…”

Section: Simple Analytical Isotherm Modelmentioning

confidence: 99%

Development of an Approach to Modeling Loading and Elution of Spherical Resorcinol Formaldehyde Ion-Exchange Resin

Aleman¹,

Hamm²,

Smith³

2011

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“…• Studies of ion-exchange kinetics indicate that under normal conditions Processes 1 and 3 are the rate-determining factors (23)(24)(25)'. Consequently, from the viewpoint of ion-exchange kinetics, low flowrates plus low crosslinkage, high-mesh resin should increase the separation efficiency of an ion exchanger.…”

Section: Ion-exchange Kineticsmentioning

confidence: 99%

Quantitative Separation of Small Amounts of Rare Earths From Thorium, Uranium, and Zirconium by Ion Exchange

Hettel¹,

Fassel²

1956

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A successful method has been developed for the determination of certain rare earths in thorium in the fractional ppm range. The procedure is based on the ion-exchange chromatographic separation of the rare earths plus added yttrium carrier from the thorium, followed by emission spectrometric determination of the rare-earth impurities in the yttrium carrier. A simultaneous separation from the rare earths of the common element impurities present in the thorium has been accomplished. A high degree of compensation for procedural errors is achieved by the use of a pure rare earth as both the carrier in the separation and purification procedure and the matrix material in the spectrographic determination.

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Equilibrium and rate studies of cation-exchange with monofunctional resins

Cited by 57 publications

References 0 publications

Separation of neutral proteins on ion‐exchange resins

Separation of neutral proteins on ion‐exchange resins

Development of an Approach to Modeling Loading and Elution of Spherical Resorcinol Formaldehyde Ion-Exchange Resin

Quantitative Separation of Small Amounts of Rare Earths From Thorium, Uranium, and Zirconium by Ion Exchange

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