The paper examines the specific output stream and the rate of detention of a semi-permeable ultrafiltration membranes, UPM, UAM150, UAM200 in the separation process, waste starch and syrup production JSC., the company "Krakhmaloprodukt" low-pressure baromembrane method. As a result of the analysis of experimental data, the dependence of the retention factor of ultrafiltration membranes UPM-K, UAM150, UAM20 at different concentrations of the dissolved substance was obtained and analyzed. For the theoretical calculation of the process of ultrafiltration separation technology solutions of starch and syrup production modified mathematical expression for the factor of detention and the specific output stream and the numerical values of the empirical coefficients. Ultrafiltration for the separation of waste starch and syrup production the technological scheme of purification, separating the main elements of which was the pre-filter, biofilter, cascade ultrafiltration apparatus, centrifugal and plunger pumps, as well as the adsorption column.The application expediency of the selected apparatus with flat chambers lies in the simplicity of their production technology and in the self-selection possibility of optimum type membranes. It is possible in the presented apparatuses to usemembranes of different types and in the course of the evaluation experiment to establish to what extent they correspond to the most important technological parameters of the process, such as specific output flow, retention factor and resistance to pollution. It is noted that the specific output flow of ultrafiltration membranes decreases with the increase of the initial concentration of the dissolved substance, as the viscosity of the solution increases and its osmotic pressure increases, and the decrease in the retention factor of ultrafiltration membranes is caused by the formation of diffusion boundary layers on the active layer of membranes.
Поступила в редакцию 6.10.2017 г.В работе представлен анализ литературных данных по исследованию сорбционной способно-сти мембран и потенциала поля поверхностных сил. Сформулирована цель работы и на основании литературного обзора выполнен выбор исследуемых ультрафильтрационных мембран УАМ-150 и УПМ-100. Методом переменных концентраций проведены экспериментальные исследования по сорбционной активности ультрафильтрационными мембранами белка из подсырной сыворотки. По-лучены численные значения равновесного коэффициента распределения белка в мембранах УАМ-150 и УПМ-100, и растворах молочной сыворотки в диапазоне изменения концентраций белка от 9 до 32 г/л при температурах от 293 до 308 К. Проанализировано влияние температуры и концентрации рас-твора молочного белка на сорбционную способность ультрафильтрационных мембран УАМ-150 и УПМ-100. На основании экспериментальных данных найдены численные значения эмпирических коэффициентов для теоретического расчета равновесного коэффициента распределения. Рассчитан потенциал поля поверхностных сил полупроницаемых мембран УАМ-150 и УПМ-100 и интерпрети-ровано его изменение в зависимости от температуры и концентрации молочного белка.Ключевые слова: ультрафильтрация, полупроницаемая мембрана, сорбционная способность, белок, потенциал поля поверхностных сил. The sorption capacity of ultrafiltration membranes and the potential field of the surface forces in solutions of milk proteinsBogomolov V.Y. 1,2 , Lazarev S.I. 2 , Polyansky K.K. 3 , Strelnikov A.E. Ltd «TMB-Technologii», Kotovsk Tambov region 2 Tambov State Technical University, Tambov 3 Voronezh branch of the Plekhanov Russian University of Economics, VoronezhThe paper presents analysis of literature data to study the sorption capacity of the membranes and of the field potential of surface forces. Formulated the objectives based on the literature review, performed the selection of the studied ultrafiltration membranes UAM-150 UPM-100. The method of variable concentrations of experimental study of sorption activity of ultrafiltration membranes protein from cheese whey. The numerical values of equilibrium distribution coefficient of the protein in the membranes UAM-150 UPM-100, and solutions of milk whey in the range of protein concentrations from 9 to 32 g/l at temperatures from 293 to 308 K. based On the experimental data numerical values of empirical coefficients in the Freundlich equation for theoretical calculation of the equilibrium distribution coefficient. It is observed that the main factors influencing the sorption of substances by membranes from solution include the initial concentration in the solution and the temperature of the solution and analyzed the effect of temperature and concentration of
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