Journal of Engineering Sciences / Журнал інженерних наук
Permanent URI for this collectionhttps://devessuir.sumdu.edu.ua/handle/123456789/34326
Browse
13 results
Search Results
Item Synergetic effect of digestate dissolved organic matter and phosphogypsum properties on heavy metals immobilization in soils(Sumy State University, 2024) Скворцова, Поліна Олексіївна; Skvortsova, Polina Oleksiivna; Аблєєва, Ірина Юріївна; Ablieieva, Iryna Yuriivna; Tonderski, K.; Черниш, Єлізавета Юріївна; Chernysh, Yelyzaveta Yuriivna; Пляцук, Леонід Дмитрович; Pliatsuk, Leonid Dmytrovych; Сіпко, Ірина Олександрівна; Sipko, Iryna Oleksandrivna; Mykhno, H.I.The main idea was to justify the natural, technological, and ecological aspects of digestate-based composite for heavy metals (HMs) binding in soil due to organic matter content and mineral additives’ biosorption properties. The study aimed to determine the potential of a composite made from digestate and phosphogypsum for remediation of HMs polluted soils and the role of dissolved organic matter (DOM) in binding HMs. Methods used included a literature review to identify the mechanisms for HM binding to digestate DOM, a laboratory setup for producing a digestate-based composite with digestate (from manure or sewage sludge) mixed with phosphogypsum, and an analysis of digestate fluorescence properties. Results show that a composite based on digestate from manure as feedstock had a higher fluorescence complexity index than a composite with sewage sludge digestate (2.2 and 1.71, respectively). However, the DOM stability in the sewage sludge digestate composite was higher than reported in the literature, probably due to the mineral composition of phosphogypsum, which resulted in a high HMs sorption capacity and its positive effect on soil microbial activity. Based on the theoretical substantiation of DOM content and its binding properties, manure was the most effective feedstock type out of the two tested if digestate was used for HM remediation. Using a digestate-based composite with phosphogypsum can potentially reduce the ecological risk levels imposed by HM-contaminated soils from considerably too low.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.Item Application of technological solutions for bioremediation of soils contaminated with heavy metals(Sumy State University, 2021) Черниш, Єлізавета Юріївна; Черныш, Елизавета Юрьевна; Chernysh, Yelyzaveta Yuriivna; Пляцук, Леонід Дмитрович; Пляцук, Леонид Дмитриевич; Pliatsuk, Leonid Dmytrovych; Roubik, H.; Яхненко, Олена Миколаївна; Яхненко, Елена Николаевна; Yakhnenko, Olena Mykolaivna; Скворцова, Поліна Олексіївна; Скворцова, Полина Алексеевна; Skvortsova, Polina Oleksiivna; Батальцев, Євген Володимирович; Батальцев, Евгений Владимирович; Bataltsev, Yevhen VolodymyrovychThis article focuses on studying biotechnologies for remediation of soils contaminated with heavy metals to determine further the most effective methods for cleaning soils from the action of toxicants with their subsequent implementation in practice. The soil restoration methods were analyzed, their advantages and disadvantages were identified, making it possible to establish that biological methods are the safest and most environmentally friendly. The expediency of using biological methods lies in the possibility of breeding strains of microorganisms that destroy soil toxicants. However, the efficiency of microbial cultures is not equally high due to a narrow range of favorable conditions for functioning, the risk of manifestation of the phenomenon of degeneration of microorganisms until the required level of soil purification is achieved. This confirms the prospects for the further development of this direction and the search for ways to eliminate certain disadvantages of biological methods. For an integrated biotechnological solution to soil remediation, a scheme of aerobic plants was developed, which is characterized by two stages: aerobic soil cultivation with biocomposite and a phytoremediation stage for additional purification and control of the content of toxicants in the soil.Item Formalization of the task of creating a mathematical model of combined wastewater treatment Processes(Sumy State University, 2021) Alekseevsky, D.G.; Черниш, Єлізавета Юріївна; Черныш, Елизавета Юрьевна; Chernysh, Yelyzaveta Yuriivna; Shtepa, V.N.This paper focuses on the formation approach to formalize the mathematical modeling of wastewater treatment processes for further forming decision support systems for wastewater treatment facilities management on such a theoretical basis. To create an experimental model of formalization of modeling problems, research was conducted on activated sludge from municipal sewage treatment facilities by introducing an oxidant (H2O2) during standard operation of wastewater treatment facilities and introducing a toxicant (sulfur compounds). It was determined that under conditionally standard conditions, the influence of the oxidant is negative: exceeding technological standards of the concentration of dissolved oxygen in water solutions (3.0–13,7 mg/l), low water column transparency (1.4– 1.6 cm), higher concentrations of ammonia nitrogen and phosphorus. With the appearance of a toxicant in the form of reduced sulfur compounds (sulfide ions and hydrogen sulfide 1.4–2.8 mg/l), on the contrary, the positive effect of H2O2 on biological water treatment processes was determined: the concentration of dissolved oxygen increases to 3.4 mg/l and the swelling of activated sludge stops. In this case, using a simplified scheme of expert evaluation as a global quality criterion of the biological stage management process of water treatment for rapid assessment of the vitality of activated sludge is justified. As parameters available for direct automatic measurement, it was proposed to use ORP and pH approximated by the regression equation. Also, a conditional scheme of the decision support system for water treatment management was proposed, which will provide two-level hierarchical control: situational and operational in real-time with a preventive response to emergencies; tactical with daily, at least daily, forecasting of the treatment plants.Item Preventive improvement of wastewater treatment efficiency(Sumy State University, 2021) Shtepa, V. N.; Черниш, Єлізавета Юріївна; Черныш, Елизавета Юрьевна; Chernysh, Yelyzaveta Yuriivna; Danilov, D. V.This paper focuses on studying the effect of electrolytic water on wastewater decontamination processes, using model solutions and wastewater from the food-processing plant. The aqueous solutions under study were obtained by changing the redox potential (ORP), and pH of ordinary tap water using a pH corrector, which is a flow-through electrolyzer with a membrane separating the cathode and anode zones, and the solutions were obtained by adding to tap water a solution containing products of electrokinetic synthesis. Parameters that changed as a result of the study: ORP, TDS, pH. Solutions capable of almost complete inhibition of the vital activity and growth of microorganisms were obtained. Also, solutions were obtained that promoted their development, and when seeding them on a dense nutrient medium, there was continuous growth. Further research is advisable to detail the technical and economic indicators of municipal and industrial facilities' water supply and sewerage schemes with preventive water treatment processes.Item Modeling of innovation research clusters in the field of radioactive waste utilization(Sumy State University, 2020) Черниш, Єлізавета Юріївна; Черныш, Елизавета Юрьевна; Chernysh, Yelyzaveta сriivna; Пляцук, Леонід Дмитрович; Пляцук, Леонид Дмитриевич; Pliatsuk, Leonid Dmytrovych; Azarov, S.; Tsutsumiuchi, K.; Kotova, I.The situation with the processing and disposal of radioactive waste, including the liquid phase, is not resolved. Many questions remain regarding the environmental safety of processes and the technological implementation of the most energy-efficient solutions. Thus, the article’s main attention is paid to theoretical studies of the development innovation directions of radioactive waste processing using the VOSviewer software tool. The clusters were formed under modeling directions of application of radiolysis for radioactive waste utilization: the red cluster includes research of radionuclide sorption processes and their concentration for radiolysis of liquid media; the green cluster concerns factors of influence on water radiolysis in hydrogen production; the yellow cluster includes research areas of natural processes related to radiolysis; the blue cluster is connected with mathematical modeling of radiolysis process with fuel production and engineering implementation and the purple cluster related to the processes of radioactive waste management and disposal as well as the application of radiolysis for this purpose. The cluster simulations of nanoparticle and radiolysis applications for radioactive waste treatment have resulted in a new energy recovery strategy. The development of new matrix materials in combination with nanoparticles for the agglomeration and concentration of radionuclides is a promising innovation method improving radiolysis under hydrogen production from radioactive waste.Item Ontological tools in anaerobic fermentation technologies: Bioinformation database applications(Sumy State University, 2020) Shulipa, Ye.O.; Черниш, Єлізавета Юріївна; Черныш, Елизавета Юрьевна; Chernysh, Yelyzaveta Yuriivna; Пляцук, Леонід Дмитрович; Пляцук, Леонид Дмитриевич; Pliatsuk, Leonid Dmytrovych; Fukui, M.An important direction of forming an effective system for recycling waste of various genesis is to optimize the processes of their treatment using the latest information resources. The paper deals with theoretical studies of directions for the systematization and optimization of anaerobic waste processing technologies using ontological tools based on information resources. Significant scientific support to biochemical research is provided by electronic bioinformatics databases such as KEGG, BacDive, and EAWAG-BBD, etc., which provide access to a collection of graphical representations and text descriptions of metabolic or signal pathways, schemes of regulation of biological processes, information about the organism. They cover various aspects of bacterial and archaic biodiversity, information on microbial biocatalytic reactions and biodegradation pathways of mainly xenobiotic chemical compounds. Also, in the course of work based on analytical data of electronic databases of bioinformatics, in particular, the interaction of necessary ecological and trophic groups of microorganisms, biochemical simulation of anaerobic waste processing with biofuel production was carried out.Item Ecologically Safe Directions of the Low Rank Coal Bioconversion(Sumy State University, 2019) Черниш, Єлізавета Юріївна; Черныш, Елизавета Юрьевна; Chernysh, Yelyzaveta Yuriivna; Пляцук, Леонід Дмитрович; Пляцук, Леонид Дмитриевич; Pliatsuk, Leonid Dmytrovych; Аблєєва, Ірина Юріївна; Аблеева, Ирина Юрьевна; Ablieieva, Iryna Yuriivna; Яхненко, Олена Миколаївна; Яхненко, Елена Николаевна; Yakhnenko, Olena Mykolaivna; М`якаєва, Ганна Миколаївна; Мякаева, Анна Николаевна; Miakaieva, Hanna Mykolaivna; Батальцев, Євген Володимирович; Батальцев, Евгений Владимирович; Bataltsev, Yevhen Volodymyrovych; Roubik, H.; Lis, D.У цій статті наведені теоретичні дослідження біохімічних особливостей оброблення низькоякісного вугілля. Представлені біохімічні основи деградації органічних компонентів низькоякісного вугілля і біохімічні принципи біологічного вилучення з нього металів та сполук сірки. Проведено аналіз груп мікроорганізмів і визначені оптимальні умови вирощування останніх. Для ідентифікації необхідних екологічних і трофічних груп мікроорганізмів, а також для реалізації закономірності трофічних взаємодій у асоціаціях різних груп мікроорганізмів як в анаеробних, так і в аеробних умовах використовувались електронні бази даних KEGG, BacDive і EAWAG-BBD. З метою розроблення екологічно безпечного напрямку виробництва біогазу і гумінових продуктів застосовано методологічний підхід та сформована принципова схема біохімічних досліджень переробки низькоякісного вугілля.Item Remediation of Soil Contaminated with Heavy Metals(Sumy State University, 2019) Пляцук, Леонід Дмитрович; Пляцук, Леонид Дмитриевич; Pliatsuk, Leonid Dmytrovych; Черниш, Єлізавета Юріївна; Черныш, Елизавета Юрьевна; Chernysh, Yelyzaveta Yuriivna; Аблєєва, Ірина Юріївна; Аблеева, Ирина Юрьевна; Ablieieva, Iryna Yuriivna; Яхненко, Олена Миколаївна; Яхненко, Елена Николаевна; Yakhnenko, Olena Mykolaivna; Батальцев, Євген Володимирович; Батальцев, Евгений Владимирович; Bataltsev, Yevhen Volodymyrovych; Гурець, Лариса Леонідівна; Гурец, Лариса Леонидовна; Hurets, Larysa Leonidivna; Balintova, M.Стаття присвячена дослідженню прикладних аспектів рекультивації грунтів, зокрема процесу зв’язування важких металів та інтенсифікації вирощування грунтового мікробіома з використанням різних органічно-мінеральних композицій.: біогенний композит, який є продуктом анаеробного перетворення осадів стічних вод і фосфогіпсу; органічно-мінеральний компост на основі суміші фосфогіпсу, суперфосфату і гумусу великої рогатої худоби; та комбінацію суміші гумату натрію і суперфосфату. Була проведена інтеграція теоретичних і експериментальних принципів в синергетичний аналіз взаємозв’язків у системі "об’єкт – предмет дослідження" при вивченні динаміки змін форм знаходження важких металів у грунті. Відсотковий вміст мобільних форм важких металів, що виділяються екстрагентом від їх питового вмісту до і після обробки грунту органічно-мінеральними композиціями визначені з використанням спектрофотометричним методом. Здійснено порівняння ефективності обробки грунту. Використання методів математичної статистики дозволило довести кореляційний зв’язок між динамікою значень окислювальної здатності біомаси для біома грунту і швидкостю окислення субстрату для різного вмісту біокомпозиту.