Modeling and automation processes of water purification from multicomponent pollution

Mathematical models of the processes of cleaning liquids from multicomponent contamination by filtration, as well as diffusion-mass transfer perturbations and the development of numerical-asymptotic methods for solving the corresponding nonlinear regularly and singularly perturbed boundary value problems are shown. The construction of automation systems of corresponding treatment systems and complexes on the basis of solving model problems is presented.

Effect of sorption of epoxy binding components on aramide fiber properties

The influence of an epoxy binder of complex composition and its individual components on the sorption and physicomechanical characteristics of domestic aramid fibers is considered. The data on diffusion mass transfer of epoxy binder and its individual components into aramid fiber of various grades are obtained. It has been established that the components of the binder, after penetrating into aramid fibers, can change their macrostructure, however, this practically does not lead to a decrease in their strength.

Multi-component diffusion mass transfer in nonselective IEX matrices with the noval displacement effect (NDE) for the concentration waves of the components – diffusants

There is presented the computerized modeling for the Diffusion Multicomponents (i=1A; 2B;3C)Mass Transfer (MMT) kinetics in the classical nonselective IEx Matrices. The Noval Displacement Effect(NDE) for the Xi(distance,Time)-concentration waves propagating in the IEx matrix is determined. TheW(ave)+-concept is presented here for the Xi-concentration waves of the i-components-diffusants whichpropagate (with multicomponent {DA,DB,DC}-diffusivities) inside the nonselective IEx matrices. The NDEeffect described is possible only for the definite conditions pointed in the last part of the publication (S.5,6).In the result of the computerized simulation of the ternary (R_1A)resin/(2B + 3C)solution IEx DiffusionMMT there is demonstrated visually and obviously the Noval Displacement Effect (NDE) inside the r-bead&ro-fiber matrices of the nonselective IEx resin for the distance-time behavior of the two invading XC,XBconcentrationwaves of the i=2B,3C-components. The initial loading of the r-bead; ro-fiber of the IEx matrixis composed by the first (1A+)-component-diffusant. There is demonstrated the non-monotonic behavior ofthe kinetic FB(T)-curve with the availability of the kinetic maximum- FBmax as the consequence of the NDEffectfor the interactive X3C,X2B-concentration waves which diffuse in the IEx r(ro)-matrices.The original author’s visualization method is used for the NDE description with the two «coupled»Figures, namely the pair of Figs. : [left -{Xi}|{Fi}-right] arranged «in line&abreast». The «coupled» picturesexamples are presented visually in S.3. In this cases the {Xi}-concentration waves (left) are arranged «inline&abreast» with the {Fi}-kinetic curves (right). Such new author’s method of the «coupled Figures»namely: «left -{Xi} | {Fi}-right « plays the crucial role in the demonstration of the NDEffect for the diffusionIEx MMT in the non-selective ion exchangers.

Multicomponent Diffusion in Metallic Systems Exposed to E-Beams

The paper is focused on selecting the optimal modes of Zr/Ti/Fe and Cu/Ni film-support systems treatment with LPHCEBs based on the numerical studies of diffusion mass transfer in a multilayered medium. The mode of alternate application of layers with exposure to an electron beam gives a more uniform profile of the concentration distribution in depth, since they experience a bigger amount of instances of electron exposure. The most preferable conditions are those that do not allow melting of film layers, while maintaining the film temperature high enough, close to melting temperature. The density of incident energy is 1.8-3 J/cm2.