Електронний архів Науково-технічної бібліотеки
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Item The impact of microwave radiation in the processes of carbon dioxide absorption by chlorophyll-producing microalgae(Видавництво Львівської політехніки, 2020-02-10) Dyachok, Vasyl; Mandryk, Solomiia; Huhlych, Serhiy; Lviv Polytechnic National UniversityThe influence of microwave radiation on the rate of СО2 uptake by chlorophyll-producing microalgae of the Chlorella Vulgaris has been established. Experimental dependencies of greenhouse gases absorption by microalgae depending on the impact of microwave electromagnetic (MEM) field have been obtained. The mathematical model of the dynamics of biomass growth of Chlorella Vulgaris microalgae depending on the time of electromagnetic radiation has been constructed. Based on the mathematical model solution and the experimental data obtained, a chart of the dependence of CO2 absorption by microalgae of the Chlorella Vulgaris provided that microwave radiation is present, has been constructed. The optimal value of microwave electromagnetic radiation for the design of technological schemes for the industrial purification of gas emissions from carbon dioxide by biological method has been established.Item About the problem of biological processes complicated by mass transfer(Lviv Politechnic Publishing House, 2017-01-20) Dyachok, Vasyl; Huhlych, Serhiy; Yatchyshyn, Yuri; Zaporochets, Yulia; Katysheva, Viktoriia; Lviv Polytechnic National University; National University of Food TechnologiesПредставлено результати вивчення процесу поглинання вуглекислого газу одноклітинними мікроводо- ростями. З’ясовано стадії перебігу процесу, враховуючи особливості умов культивування, зокрема наявність клі- тинного та міжклітинного середовища. Встановлено константи, які конкретизують математичну модель погли- нання вуглекислого газу з повітря клітинами мікроводоростей. Отримані рішення дають можливість прогнозувати кінетику процесу поглинання вуглекислого газу та проектувати обладнання для здійснення технологічного процесу очищення газових викидів за умов реалізації біотехнології на практиці.Item Determination of the activation energy of the reaction of photosynthesis in chlorophyll synthesizing microalgae(Lviv Polytechnic Publishing House, 2016) Dyachok, Vasyl; Katysheva, Viktoriia; Lviv Polytechnic National UniversityThe dynamics of absorption of carbon dioxide at corresponding temperature by microalgae Chlorella was studied. The results of experimental research will allow to calculate the energy of activating photochemical reaction and other values of kinetics of increase of microalgae within the limits of the investigating temperatures. The analytical dependence of coefficient of growth biomass on temperature within the limits of the investigating temperature was established. The stages of transport of carbon dioxide from air to internal volume of microalgae cell was determined through literature. The optimal terms of their cultivation was selected and analyzed. The results showed that it is possible to forecast the technological scheme of cleaning of gas emissions from carbon dioxide by biological method.Item About problem of absorption of greenhouse gas by chlorophyilsynthesizing microalgae in the presence of sulfur dioxide(Видавництво Львівської політехніки, 2017-12-23) Dyachok, Vasyl; Katysheva, Viktoriia; Lviv Polytechnic National UniversityThe presence of non-competitive reverse inhibition by sulfur dioxide in the process of photosynthesis based on the Lineweaver-Burk theory was theoretically justified and experimentally proved. The mathematical description of the growth of the cells of the microalgae is given and as a result of processing experimental data the growth rates of the algae at certain values of inhibitor concentration was defined. Based on the obtained values the analytical dependence of growth rate of biomass from the substance of inhibitor was redused. The maximum value of concentration of sulphur dioxide which may occur photosynthesis and biomass growth of microalgae was set.