Application of Computing Machines to Ion-Exchange Column Calculations

Opler, Ascher

doi:10.1021/ie50528a023

Cited by 8 publications

(3 citation statements)

References 12 publications

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“…The exact solution (Thomas, 1948;Mickley et al, 1957) is relevant for high flow velocities as encountered in chemical industry and is given by a J-function available as graphs (Hiester and Vermeulen, 1952) or in tabulated form (Opler, 1953).…”

Section: Chromatography In Cation Exchange Of Soilsmentioning

confidence: 99%

Theory of chromatography and its application to cation exchange in soils.

Reiniger¹,

Bolt²

1972

NJAS

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Different types of solutions of the differential equation describing the process of cation exchange chromatography are compared and evaluated for their applicability to soil conditions. In cases where divalent cations replace monovalent ions, the exchange front assumes a stationary profile at an early stage which then yields an analytical solution provided a fairly simple exchange equation like that of Gapon or Vanselow is applicable. Where monovalent ions replace divalent ions, a non-stationary front arises, which is strongly dominated by the exchange equation. A good approximation of the front can be obtained by an analytical solution taking no account of diffusion or dispersion. Knowledge of the total electrolyte in the soil column is often the limiting factor in predicting the location and shape of the exchange front.[112.23.07]. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Section: Chromatography In Cation Exchange Of Soilsmentioning

confidence: 99%

Theory of chromatography and its application to cation exchange in soils.

Reiniger¹,

Bolt²

1972

NJAS

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“…Other work in the application of these machines to adsorption (IS) and ion exchange (8) problems also shows promise of great success.…”

Section: Mathematicalmentioning

confidence: 99%

Transients and Equilibration Time in Continuous Distillation

Rose¹,

Johnson²,

Williams³

1956

Ind. Eng. Chem.

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“…The actual degree of automation in the calculation is to be sure a direct function of the storage capacity of the computer and its facility for programming for decision making. The design of such equipment as absorption columns [13,19], ion exchange columns [33], fluid flow systems [25,36], heat exchangers [2i, 35], and many other such items is carried out using trial-and-error schemes much like that just described. Again the saving, not only in manpower and time but also in the fact that many more design cases can be considered, is tremendous.…”

Section: )mentioning

confidence: 99%

Computations in the Field of Engineering Chemistry

Williams

Johnson

Rose

1957

J. ACM

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IntroductionThe chemical industries have until recently lagged behind the aircraft and some other industries in the application of electronic computers to their research, design, and operational scheduling problems although they are now making great strides in correcting this situation. The lag has been due in major part, of course, to the lack of the impetus of the defense effort to the operations of this industry. In addition, at the same time, the chemical and petroleum companies have been able to invest all of their available capital in new plants in an effort to satisfy the ever-increasing demand for consumer goods brought on by our burgeoning economy. With plentiful markets at good profits available, the requirements for an extremely accurate design and for very close operational scheduling and control were relaxed in the necessity for speed in getting a plant on-stream. In addition, basic data on the physical behavior of chemical processes and on the properties of chemical materials is lacking in many cases.The success of computer applications in other engineering fields, and in some branches of the physical sciences, their spectacular application to certain business problems, as well as the results obtained by a few of the pioneers in solving chemical engineering problems on computers, has dra~m the attention of the industry to electronic computing machines. In addition, there has recently been a general tightening up of the available markets for all goods including chemicals. This has resulted in a necessity for a long, second look at plant design and operational methods to see what improvements might be made in order to maintain profits at the previous healthy level of the period of expansion. Thus, there has been a general awakening to the use and value of automatic computers to the industry. A striking illustration of this awakening is the fact that nearly every recent major chemical or petroleum technical society meeting has had at least one session or major talk on computers and their applications.

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Application of Computing Machines to Ion-Exchange Column Calculations

Cited by 8 publications

References 12 publications

Theory of chromatography and its application to cation exchange in soils.

Theory of chromatography and its application to cation exchange in soils.

Transients and Equilibration Time in Continuous Distillation

Computations in the Field of Engineering Chemistry

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