Issue №: 3 (106)
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.
MATHEMATICAL MODELING OF THE EXTRACTION PROCESS IN THE ACOUSTIC EXTRACTOR
Ostapenko Zhanna-postgraduate student, assistant of Vinnytsia national agrarian university (st. Soniachna, 3, Vinnytsia, Ukraine, 21008)
One of the most promising physical methods of extraction processes intensification is ultrasound. Dissemination of sound waves in the device occurs by periodic rarefaction and compression of the liquid with the corresponding frequency to the frequency of sound wave oscillations and with a rarefaction amplitude equal to the compression amplitude. Effects of mixing and heating of the liquid, pulsation, collapse of cavitation bubbles is occurred during the operation of the ultrasonic generator.
Extraction under the ultrasound influence has its advantages. The equipment has the possibility of continuous operation and is suitable for mass extraction of medicinal products from plants; the extraction time is reduced; the process takes place at a low temperature, which is very important for the thermolabile pharmaceutical ingredients. Sound waves are mechanical vibrations in solids, liquids, and gases that have frequencies higher than 20 kHz. Sound waves moves in any matter, they are associated with cycles of compression and expansion during movement in the medium, in contrast with electromagnetic waves. It is possible to reduce the extraction operating temperature of thermolabile compounds using ultrasound. In addition, any solvent can be used during ultrasonic extraction.
Ultrasonic extraction can be used to extract biologically active substances such as essential oils, lipids, and dietary supplements from plants.
To calculate the process of extraction of biologically active substances in an acoustic extractor, it is necessary to develop a mathematical model for establishing diffusion coefficients and extraction time.
1. M. Iftikhar, H. Zhang, A. Iftikhar, A. Raza, N. Begum, A. Tahamina, H. Syed, M. Khan, J. Wang Study on optimization of ultrasonic assisted extraction of phenolic compounds from rye bran. LWT - Food Science and Technology 134 (2020) 110243. https://doi.org/10.1016/j.lwt.2020.110243
2. Jianqing Liao, Zhouren Guo, Guicai Yu, Process intensification and kinetic studies of ultrasound-assisted extraction of flavonoids from peanut shells, Ultrasonics Sonochemistry 76 (2021) 105661 https://doi.org/10.1016/j.ultsonch.2021.105661
3. Jorge E. Rodríguez-Chanfrau, Malvis Robaina-Mesa, Zalua Rodríguez-Riera, Ulises Jauregui-Haza, Ultrasound-assisted extraction of coumarin from Justicia pectoralis Jacq, Rev Mex Cienc Farm 47 (1) 2016
4. M. Romdhane, C. Gourdon, Investigation in solid–liquid extraction: influence of ultrasound, Chemical Engineering Journal 87 (2002) рр. 11–19
5. C. Haunold, Extraction des pyréthrines—analyse du procédé discontinu et de l’influence des ultrasons. Modélisation et mise en æuvre d’un procédé continu, Thèse, Institut National Polytechnique de Toulouse, 1991
6. Mohammad Chand Ali, Jia Chen, Haijuan Zhang, Zhan Li, Liang Zhao, Hongdeng Qiu, Effective extraction of flavonoids from Lycium barbarum L. fruits by deep eutectic solvents-based ultrasound-assisted extraction, Talanta 203 (2019)
рр. 16–22
7. Sylwia Bajkacz, Jakub Adamek, Development of a method based on natural deep eutectic solvents for extraction of flavonoids from food samples, Food Anal. Methods 11 (5) (2018) рр. 1330–1344
About the journal
The journal "Vibrations in Engineering and Technologies" is included in the list of technical scientific publications of Ukraine
(Category "B", Order of the Ministry of Education and Science of Ukraine dated July 2, 2020 No. 886)
Old version of the site: http://vibrojournal.vsau.edu.ua/
The journal "Vibrations in Engineering and Technology" is indexed by the following databases and catalogs:
The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University
The journal is devoted to highlighting current issues in engineering, mechanical engineering, and technological processes, including the study of dynamic and oscillatory phenomena in technical systems, the application of mathematical methods for process modeling and analysis, as well as the presentation of results of design-engineering and technological developments. Particular attention is given to the study of vibration processes and their application in modern technologies.
The purpose of the scientific journal “Vibrations in Engineering and Technologies” is to disseminate the results of fundamental and applied research in the field of engineering sciences aimed at developing theoretical foundations and practical approaches to the design, analysis, and improvement of machines, materials, and technological processes, including the use of vibration and oscillatory effects in various sectors of production.
The publication is focused on the formation of a modern scientific and informational environment for the effective exchange of research results, support of innovative development, and implementation of advanced technical solutions in industry, agro-industrial production, and related fields.
The journal promotes the development of interdisciplinary research, the integration of modern engineering approaches, and the enhancement of the efficiency of technological processes and technical systems, including through the rational use of vibration phenomena.
Objectives of the Scientific Journal
To achieve its stated purpose, the journal addresses the following key objectives:
dissemination of results of fundamental and applied scientific research in the fields of mechanics, mechanical engineering, technological processes, machine dynamics, and equipment, as well as in areas related to the application of vibration phenomena in engineering and technologies;
promotion of research aimed at the creation and improvement of machines, mechanisms, and technological equipment based on oscillatory and vibration processes;
support for the implementation of modern technological solutions focused on improving productivity, energy efficiency, and reliability of technical systems;
обеспечение scientific exchange of research results among research institutions, higher education establishments, and industrial enterprises;
development of interdisciplinary cooperation among researchers in the fields of mechanics, materials science, material processing technologies, and automation of technological processes;
dissemination of modern scientific achievements and advanced technologies related to the application of vibration processes in production and technical systems.
Publisher Vinnytsia National Agrarian University
In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published 119 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Ihor Kupchuk, Candidate of Technical Sciences, Associate professor, Associate Professor of the Department of Engineering Mechanics and Technological Processes in the Agricultural Industry Faculty of Engineering and Technology Vinnytsia National Agrarian University is the chief editor of the "Vibrations in engineering and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.
