Showing papers in "Separations Technology in 1991"

TL;DR: In this article, a 5 cm diameter column of Bentonite suspensions was dewatered by electroosmosis under conditions of constant DC voltage and constant DC current in a 5-cm diameter column.

TL;DR: In this article, diffusion and equilibrium adsorption of nitrogen, oxygen, argon, and methane on molecular sieve carbons 3A and 5A were studied at 273, 303, and 323°K.

TL;DR: In this paper, a dimensionless group approach is used to predict the resolution of β-lactoglobulin A wave fronts and peaks in a cascade of tetramer, octamers, and dodecamers.

TL;DR: In this paper, a cascade process for the separation of a multicomponent mixture of solid particles based only on solubility is disclosed, which consists of two subprocesses: one is made up of a dissolver-filter-crystallizer-filter train, and the other is made of the same plus an evaporator.

TL;DR: In this paper, two nonfoaming separations, bubble fractionation and solvent sublation, are reviewed and the potential use of these processes for large-scale separations is examined; the limitations and need for further work are clearly evident.

TL;DR: In this paper, clean filter coefficients for the removal of small particles from dilute liquid suspensions by fibrous filters were calculated using different porous media models and approximate expressions of the filter coefficient were established and relate the filter coefficients with various relevant dimensionless parameters.

TL;DR: In this paper, the authors dealt with the recovery and purification of liquid streams containing phenol and p-nitrophenol with individual concentrations of 25 mg/l by adsorptive parametric pumping.

TL;DR: In this article, experiments of fixed-bed carbon adsorption of phenol from aqueous solutions in the presence of three other adsorbates were made for the purposes of: (a) validating the multicomponent adaption algorithm of Wang and Tien, and (b) exploring the application of the method developed by Tien and coworkers in characterizing the adsorbing affinity of background organics in fixed bed calculations.

TL;DR: In this paper, the effect of residence time distribution of adsorbents was analyzed for liquid-phase adsorption in well-mixed continuous-flow tanks and solutions corresponding to three different kinds of residence-time distribution functions were obtained and their numerical results presented.

TL;DR: In this paper, the NOXSO process was successfully tested at three different scales, equivalent to 0.017, 0.06, and 0.75 MW of flue gas generated from a coal-fired power plant.

TL;DR: In this article, computer simulations of particle deposition in model fiber filters were conducted and the basic element of the model filters used in the simulation consisted of three identical parallel and equally spaced circular cylinders, with the flow field around the cylinder obtained using the method of Lehner.

TL;DR: In this paper, a bench flotation apparatus was constructed and tested in the laboratory on pyrite fines, based on the conventional test-tube idea, but modified to permit the experimentation of floatability by dissolved-air.

TL;DR: An experimental study of aerosol filtration in a magnetically stabilized fluidized filter (MSFF) was conducted in order to compare the performance of MSFFs with fixed-bed filters as mentioned in this paper.

TL;DR: In this paper, a study on the possible use of media composed of permeable spheres in deep-bed filtration was conducted The media was made of thin fibers and have different porosities with such media, particle retention takes place at the outside surfaces as well as throughout the entire body of the spheres.

TL;DR: In this article, the effect of the media pore size distribution on filter performance has been investigated in deep-bed filtration models based on O'Melia-Ali and effective medium approximation theory.

TL;DR: In this article, the effects of chilled air feed on oxygen-enrichment pressure swing adsorption (PSA) were discussed by simplified computer simulation as the first step to study the practical feasibility of a temperature-controlled PSA process.

TL;DR: In this article, the feasibility of using a vacuum spray chamber for stripping emulsified organic liquid (in this case, trichlorofluoromethane) from water sprays was investigated.

TL;DR: In this article, a new model for deep-bed filtration that considers the presence of medium size gradations and the variation of influent concentration with time is proposed, and the model is found to agree with pilot plant data.

TL;DR: A definition for a separation scheme is proposed and an approximation formula is derived to calculate the number of possible alternative schemes for a one-feed, m-product (1FmP) separation problem involving simple sharp separators and multicomponent product streams.

TL;DR: In this article, the importance of double-layer forces in filtration of lubricating oil is discussed and the implications of these forces and their interaction with the London van der Waals forces and the resultant interaction potential and its possible effects on the performance of oil filters are discussed.

TL;DR: In this article, the interrelationship between modifiers and sample solutes in prepative and large-scale chromatography is investigated using a nonlinear multicomponent rate model in which axial dispersion, film mass transfer, intraparticle diffusion, and multic-component Langmuir isotherm are considered.

TL;DR: In this article, the influence of an electric field on dendrite formation was investigated in a simulation of the filtration process of fibrous filters, and three-dimensional graphical representations of simulations with and without electric fields were presented, and a comparison with a two-dimensional model was made.

TL;DR: In this article, a general relationship between wetting and adsorption of polymeric resins is derived from the Gibbs and Young's equations and its implications discussed, and the relationship between adaption and wetting is discussed.