The suppression of the inhibition effect by SO 2 sulfur dioxide with the simultaneous action of two activators -P 2 O 5 phosphorus oxide and N x O y nitrogen oxide, as well as the process of carbon dioxide absorption by chlorophyllsynthesizing microalgae Chlorella were studied in this work. The experimental dependences of the СО 2 uptake dynamics by microalgae under the conditions of the SO 2 inhibitor critical concentration action and the simultaneous presence of P 2 O 5 and N x O y activators were shown. A mathematical description of the Chlorella microalgae biomass growth depending on the P 2 O 5 and N x O y activators concentration, provided that there is a SO 2 inhibitor constant concentration was obtained. The optimum values of the P 2 O 5 phosphorus oxide and N x O y nitrogen oxides concentration at the SO 2 inhibitor critical concentration for the carbon dioxide absorption by chlorophyll-synthesizing microalgae Chlorella process were established.
The paper shows the possibility of using chlorophyll-synthesizing microalgae of Chlorella vulgaris to purify biogas from carbon dioxide (CO 2 ), hydrogen sulfide (H 2 S) and ammonia (NH 3 ). Experimental dependences of the dynamics of CO 2 uptake by microalgae under the action of H 2 S inhibitor and NH 3 activator were presented. A mathematical description of the growth of biomass of microalgae Chlorella vulgaris, depending on the concentration of hydrogen sulfide and ammonia, was obtained. The optimal values of hydrogen sulfide and ammonia concentration for the efficient process of carbon dioxide uptake by chlorophyll-synthesizing microalgae Chlorella vulgaris from biomethanization gas were established.
The research on the effect of sulfur oxides (SO 2), nitrogen oxides (N x O y) and phosphorus oxides (P 2 O 5) on carbon dioxide (CO 2) uptake dynamics of chlorophyll synthesizing microalgae was conducted. The analytic dependences of microalgae growth rates under their СО 2 uptake, SO 2 , N x O y and P 2 O 5 concentrations were obtained. Mathematical models enabling to predict the maximum values of SO 2 , N x O y and P 2 O 5 oxides concentrations without inhibiting the CO 2 uptake dynamics of chlorophyll synthesizing microalgae were built based on the obtained experimental research results.
In this study the mathematical model of the extraction process from plant material is developed, taking into account the anatomical structure of plant material, namely the presence of cellular and intercellular spaces. The solution of the model enables to determine its kinetic coefficients Dc, Dt, process conditions, and predict the kinetics of the extraction process implementation in practice.
The article presents the assessment of bioelectroproductivity of wetland sedge ecosystems of Carex acutiformis in situ. It was found that it is possible to obtain a bioelectric potential at the level of 864.2-1114.8 mV, depending on external conditions using a pair of electrodes graphite/zinc-galvanized steel and graphite/aluminum. The increase in soil moisture had a positive effect on bioelectric potential parameters. Widespread in Polissya biotopes of sedge have prospects as sources of green plant-microbial energy.
The influence of nitrogen oxides on the СО2 uptake rate by chlorophyll-producing microalgae of Chlorella type was investigated. Experimental dependences of microalgae concentration growth over time under certain values of nitrogen oxides concentration in the culture medium were obtained. The mathematical model of microalgae biomass growth depending on nitrogen oxides concentration was developed. Based on the solution of the mathematical model and the obtained experimental data, the concentration of nitrogen oxides for the maximal microalgae growth was determined.
This article presents the results of experimental studies on the use of Chlorella microalgae for wastewater treatment from the most common mineral pollutants. The influence of the mineral pollutants, namely anions HSO3- , NO3 - , H2PO4 - on the dynamics of wastewater treatment has been established. Analytical dependences of microalgae biomass growth rate depending on pollutant concentration HSO3- , NO3 - , H2PO4 - and are obtained. The values of biomass growth coefficients at the corresponding pollutant concentrations are determined. Based on the obtained experimental research results, mathematical models have been constructed that allow predicting the maximum values of mineral pollutants concentrations at which effective wastewater treatment by chlorophyllsynthesizing microalgae is possible. The technological scheme of wastewater treatment from mineral pollutants and the mechanism of the obtained application biomass are proposed.
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