Journal of Engineering Sciences / Журнал інженерних наук
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Item Electrofermentation for biopolymers production: trends determination with bioinformatics data analysis(Sumy State University, 2022) Черниш, Єлізавета Юріївна; Черныш, Елизавета Юрьевна; Chernysh, Yelyzaveta Yuriivna; Батальцев, Євген Володимирович; Батальцев, Евгений Владимирович; Bataltsev, Yevhen Volodymyrovych; Shen, X.-J.; Богданович, Олег Миколайович; Богданович, Олег Николаевич; Bohdanovych, Oleh Mykolaiovych; Яхненко, Олена Миколаївна; Яхненко, Елена Николаевна; Yakhnenko, Olena MykolaivnaThe paper is devoted to the study of directions of application of combined systems for obtaining biofuels and biopolymers using electro-oxidative processes, namely electro-fermentation. In the course of the work, a step-bystep methodology of research is shown, and the relationship between different bioinformatic databases in their combined use is described, which made it possible to identify trendsin electro-fermentation systems with the production of bio-based products. A review of possible electro-fermentation systems with major bio-product production was performed. The possibility of including anaerobic producers of organic acids, namely lactic acid, for the needs of biopolymerization, with bioinformatic databases was substantiated. The model of the process of anaerobic fermentation with the production of organic acids for biopolymerization has been formed. The analysis of bioinformatic databases showed that the strains Anaerotignum propionicum X2, isolated from silty bottom sediments, and Anaerotignum propionicum 19acry 3, isolated from an operating anaerobic reactor, have the most significant indicators of lactate productivity. The conditions for their cultivation with an indication of nutrient media and modification of their composition are considered.Item Effect of phosphogypsum addition on methane yield in biogas and digestate properties during anaerobic digestion(Sumy State University, 2022) Чубур, Вікторія Сергіївна; Чубур, Виктория Сергеевна; Chubur, Viktoriia Serhiivna; Черниш, Єлізавета Юріївна; Черныш, Елизавета Юрьевна; Chernysh, Yelyzaveta Yuriivna; Ferchau, E.; Zaffar, N.The study discussed the use of phosphogypsum by-product waste in anaerobic digestion processes. Besides the production of biogas from plant substrate with the addition of phosphogypsum, the focus was placed on the enrichment of digestate with phosphogypsum as a mineral additive to increase the concentration of valuable macro-and microelements. The component composition of the obtained digestates was analyzed, and opportunities for additional research were determined. Research on the use of mineral additives in anaerobic digestion is considered promising. Phosphogypsum favors the quality of digestate as an organic mineral fertilizer with a higher content of mineral components. Furthermore, the contribution of phosphogypsum to plant substrate to achieve higher biogas production is not apparent, but with an impact on the component composition of biogas; however, there is an opportunity to consider the potential benefits of using the additive with another type of substrate waste for the anaerobic digestion process.