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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vuzbiochemi</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Прикладная химия и биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Universities. Applied Chemistry and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-2925</issn><issn pub-type="epub">2500-1558</issn><publisher><publisher-name>ИРНИТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/2227-2925-2019-9-4-737-749</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-267</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ХИМИЧЕСКАЯ ТЕХНОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMICAL TECHNOLOGY</subject></subj-group></article-categories><title-group><article-title>Особенности мощностных и массообменных характеристик биореактора с дисковыми перфорированными мешалками</article-title><trans-title-group xml:lang="en"><trans-title>Power and mass exchange characteristics of a bioreactor equipped with disk perforated mixers</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хабибрахманов</surname><given-names>Р. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Khabibrakhmanov</surname><given-names>R. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хабибрахманов Ринат Басыйрович, старший преподаватель кафедры химической кибернетики факультета пищевых технологий, аспирант</p><p>420015, г. Казань, ул. К. Маркса, 68, Республика Татарстан</p></bio><bio xml:lang="en"><p>Rinat B. Khabibrakhmanov, Senior Lecturer, Postgraduate Student, Department of Chemical Cybernetics</p><p>68, K. Marx St., Kazan 420015, Republic of Tatarstan</p></bio><email xlink:type="simple">habib13@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мухачев</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Mukhachev</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мухачев Сергей Гарманович, к.т.н., доцент кафедры химической кибернетики факультета пищевых технологий</p><p>420015, г. Казань, ул. К. Маркса, 68, Республика Татарстан</p></bio><bio xml:lang="en"><p>Sergey G. Mukhachev, Ph.D. (Engineering), Associate Professor Department of Chemical Cybernetics</p><p>68, K. Marx St., Kazan 420015, Republic of Tatarstan</p></bio><email xlink:type="simple">kznsoes@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский национальный исследовательский технологический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan National Research Technological University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>05</day><month>01</month><year>2020</year></pub-date><volume>9</volume><issue>4</issue><fpage>737</fpage><lpage>749</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хабибрахманов Р.Б., Мухачев С.Г., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Хабибрахманов Р.Б., Мухачев С.Г.</copyright-holder><copyright-holder xml:lang="en">Khabibrakhmanov R.B., Mukhachev S.G.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vuzbiochemi.elpub.ru/jour/article/view/267">https://vuzbiochemi.elpub.ru/jour/article/view/267</self-uri><abstract><p>Продуктивность биореактора при реализации аэробных процессов биосинтеза зависит от интенсивности массообмена кислорода. Исследованы дисковые мешалки с перфорированной поверхностью, которые обеспечивают увеличение поверхности контакта газовой и жидкой фаз. Экспериментально установлено, что мощностные характеристики дисковых мешалок с отогнутыми сегментами и секторами зависят от угла наклона рабочих поверхностей. Для многоярусных мешалок показано, что при возрастании расстояния между ярусами в диапазоне 0–1,4 от диаметра мешалки показатель степени при числе ярусов в выражении суммарной мощности пропорционален величине указанного расстояния. При расстоянии между ярусами, превышающем диаметр мешалки в 1,5 и более раз, суммарная мощность равна сумме мощностей одиночных мешалок. Энергетическая эффективность процесса массообмена кислорода резко снижается при уменьшении расстояния между ярусами. Показатель эффективности процесса массопередачи кислорода зависит от соотношения аэрации и мощности мешалки и имеет вид кривой с насыщением. Анализ всей совокупности полученных экспериментальных зависимостей позволяет сделать вывод о том, что интенсивный и одновременно энергоэффективный процесс массообмена кислорода может быть обеспечен при малом отношении диаметра аппарата к его высоте, использовании многоярусных мешалок с расстоянием между ярусами, превышающими диаметр мешалки, и при удельной аэрации не менее 3 мин-1 . Дисковые перфорированные мешалки могут быть рекомендованы к использованию в конструкциях биореакторов, их применение предпочтительно в процессах наработки биомасс аэробных микроорганизмов, в том числе при выращивании посевных культур с высокой плотностью. Режимы, обеспечивающие достижение высокой плотности популяции аэробных микроорганизмов при скоростях массообмена кислорода, превышающих 10 кгО2/м3 ·ч, характеризуются относительно невысокой энергоэффективностью (1–1,2 кгО2/кВт·ч).</p><p>Авторы заявляют об отсутствии конфликта интересов.</p></abstract><trans-abstract xml:lang="en"><p>In the implementation of aerobic biosynthesis processes, the productivity of a bioreactor depends on the intensity of oxygen mass transfer. Disk mixers with a perforated surface, providing an increase in the contact surface of the gas and liquid phases, were studied. The power characteristics of disk mixers with bent segments and sectors was experimentally established to depend on the slope of the working surfaces. For multi-tier mixers, the exponent regarding the number of tiers in the expression of total power was determined to be proportional to the value of the distance between tiers in the range of specified distance equal to 0–1.4 of the diameter of the mixer. At a distance between tiers exceeding the diameter of the mixer by 1.5 or more times, the total power is equal to the sum of the powers of single mixers. The energy efficiency of the process of oxygen mass transfer decreases sharply with decreasing distance between tiers. The eff iciency indicator of the oxygen mass transfer depends on the ratio of aeration and power of the mixer, demonstrated in the form of a saturation curve. An analysis of the obtained experimental dependences supports a conclusion concerning the intensive and energy-efficient process of oxygen mass transfer obtained by ensuring a small ratio of the diameter of the unit to its height, use of multi-tier mixers with a distance between tiers greater than the diameter of the mixer and specific aeration of at least 3 min -1 . Perforated disk mixers can be recommended for use in bioreactor designs with the optimal implementation in the processes of aerobic microorganism production, including the cultivation of high-density seed crops. At oxygen mass transfer rates exceeding 10 kgO2/m3 ·h, modes ensuring the achievement of a high population density of aerobic microorganisms are characterised by relatively low energy efficiency (1–1.2 kg O2/kWh).</p><p>The authors declare no conflict of interests regarding the publication of this article.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>мешалка</kwd><kwd>перфорация</kwd><kwd>коэффициент мощности</kwd><kwd>коэффициент массопередачи кислорода</kwd><kwd>массообмен</kwd><kwd>энергоэффективность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>mixer</kwd><kwd>perforation</kwd><kwd>power factor</kwd><kwd>oxygen mass transfer coefficient</kwd><kwd>mass transfer</kwd><kwd>energy efficiency</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Пат. № 2021849, Российская Федерация. Перемешивающее устройство для многофазных сред / С.Г. Мухачев, Р.И. Валеев, Ш.Г. 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