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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Nitrogen transformations in a through‐flow wetland revealed using whole‐ecosystem pulsed 15N additions
Jonathan M. O'Brien,Stephen K. Hamilton,Lauren E Kinsman-Costello,Jay T. Lennon,Nathaniel E. Ostrom +4 more
TL;DR: Ecosystem metabolism measurements indicate that release was attenuated during the day by autotrophic uptake, resulting in lower ammonium export at night, and porewater concentration profiles suggest high rates of net ammonium diffusion from the sediments.
Journal ArticleDOI
Numerical modelling for the solar driven bi-reforming of methane for the production of syngas in a solar thermochemical micro-packed bed reactor
TL;DR: In this paper, a pseudo-homogeneous mathematical model is developed to simulate the heat and mass transfer processes coupled with thermochemical reaction kinetics in a solar thermochemical micro-packed bed (ST-μPB) reactor with radiative heat loss.
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Some Comments on Molecular Diffusion and Hydrodynamic Dispersion in Porous Media
J. W. Biggar,D. R. Nielsen +1 more
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A mechanical-hydraulic-solute transport model for rough-walled rock fractures subjected to shear under constant normal stiffness conditions
TL;DR: In this paper, the authors developed a two dimensional mechanical-hydraulic-solute transport model for rough-walled rock fractures under constant normal stiffness boundary conditions, where the surface roughness was characterized by two-order asperities, i.e., waviness and unevenness.
Journal ArticleDOI
Estimation of dispersion coefficients in packed beds
TL;DR: In this paper, a two-dimensional pseudo-continuous dispersed flow model was developed to characterize the dispersive features of packed beds by obtaining reliable estimates of the associated coefficients in the axial (DL) and radial (DR) directions.
References
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Journal ArticleDOI
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.