Journal ArticleDOI
Continuous flow systems. Distribution of residence times
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TLDR
In this article, the authors proposed a method to predict the distribution of residence-times in large systems by using distribution-functions for residencetimes, which can be used to calculate the etficiencies of reactors and blenders.About:
This article is published in Chemical Engineering Science.The article was published on 1995-12-01. It has received 1416 citations till now. The article focuses on the topics: Residence time distribution & Perfect mixing.read more
Citations
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Quantimet image analysis of soil pore geometry: Comparison with tracer breakthrough curves
P. J. C. Walker,S.T. Trudgill +1 more
TL;DR: In this paper, the relationship between two-dimensional image analysis of soil thin-sections and tracer breakthrough curves has been studied for a silty clay loam brown earth soil under saturated conditions.
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Diffusion effects in miscible displacement occurring in saturated and unsaturated porous materials
J. W. Biggar,D. R. Nielsen +1 more
TL;DR: In this article, the role of hydrodynamic dispersion and diffusion in transporting dissolved solutes must be included in the theory of most soil water processes, and the tracer appeared at the end of the soil column well in advance of what would have been expected had no mixing occurred at the boundary of tracer and tracer-free water.
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Design of affinity membrane bioseparations
TL;DR: A mathematical model including convection, diffusion, and rate kinetics is formulated to analyze the design and operation of affinity membrane bioseparations and shows that the breakthrough of the protein is significantly influenced by Peclet number, feed protein concentration, Ligand number, Damkohler number, membrane thickness, and flow rate.
Journal ArticleDOI
Residence time distributions in a modular micro reaction system
TL;DR: In this article, residence time distributions were investigated in a retention reactor and a coaxial heat exchanger of a commercial modular micro reaction system, to improve processing time control and implement this system as a lab scale tool for thermal process development.
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A particle tracking transport method for the simulation of resident and flux-averaged concentration of solute plumes in groundwater models
TL;DR: In this article, a convolution-based particle tracking (CBPT) method is developed to simulate resident or flux-averaged solute concentrations in groundwater models, which is valid for steady-state flow and linear transport processes such as sorption with a linear sorption isotherm and first-order decay.
References
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Mathematics of Adsorption in Beds. VI. The Effect of Longitudinal Diffusion in Ion Exchange and Chromatographic Columns
Leon Lapidus,Neal R. Amundson +1 more
Journal ArticleDOI
The Definition and Measurement of Some Characteristics of Mixtures
TL;DR: In this paper, it is shown that the important features of such mixtures can be expressed by two statistically defined quantities, the scale and the intensity of segregation, and methods of measuring these are suggested.