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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">ipolytech</journal-id><journal-title-group><journal-title xml:lang="ru">iPolytech Journal</journal-title><trans-title-group xml:lang="en"><trans-title>iPolytech Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2782-4004</issn><issn pub-type="epub">2782-6341</issn><publisher><publisher-name>Irkutsk National Research Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/1814-3520-2025-4-567-579</article-id><article-id custom-type="edn" pub-id-type="custom">IAAFZR</article-id><article-id custom-type="elpub" pub-id-type="custom">ipolytech-994</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>МЕТАЛЛУРГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METALLURGY</subject></subj-group></article-categories><title-group><article-title>Переработка медноцианистых растворов с использованием сульфатредуцирующих бактерий</article-title><trans-title-group xml:lang="en"><trans-title>Treatment of copper cyanide solutions with the use of sulfate-reducing bacteria</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>Гринько</surname><given-names>С. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Grinko</surname><given-names>S. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гринько Семён Дмитриевич, президент</p><p>457021, г. Пласт, ул. Кооперативная, 20/210</p></bio><bio xml:lang="en"><p>Semyon D. Grinko, President </p><p>20/210 Kooperativnaya St., Plast, Chelyabinsk Region 457021</p></bio><email xlink:type="simple">grinko76@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>Файберг</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Faiberg</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Файберг Анна Александровна, к.т.н., ведущий научный сотрудник</p><p>664025, г. Иркутск, б-р Гагарина, 38</p></bio><bio xml:lang="en"><p>Anna A. Faiberg, Cand. Sci. (Eng.), Leading Researcher </p><p>38 Gagarin Blvd, Irkutsk 664025</p></bio><email xlink:type="simple">Fayberg@irgiredmet.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Епифоров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Epiforov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Епифоров Александр Владимирович, к.т.н., ведущий научный сотрудник</p><p>664025, г. Иркутск, б-р Гагарина, 38</p></bio><bio xml:lang="en"><p>Alexander V. Epiforov, Cand. Sci. (Eng.), Leading Researcher</p><p>38 Gagarin Blvd, Irkutsk 664025</p></bio><email xlink:type="simple">epiforov@irgiredmet.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баликов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Balikov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баликов Станислав Васильевич, д.т.н., главный научный сотрудник</p><p>664025, г. Иркутск, б-р Гагарина, 38</p></bio><bio xml:lang="en"><p>Stanislav V. Balikov, Dr. Sci. (Eng.), Chief Researcher</p><p>38 Gagarin Blvd, Irkutsk 664025</p></bio><email xlink:type="simple">balikov@irgiredmet.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ООО «Управляющая компания «Южуралзолото Группа Компаний»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Limited Liability Company «Management Company UGC»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Иркутский научно-исследовательский институт благородных и редких металлов и алмазов</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Irkutsk Research Institute of Precious and Rare Metals and Diamonds</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>04</day><month>01</month><year>2026</year></pub-date><volume>29</volume><issue>4</issue><fpage>567</fpage><lpage>579</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гринько С.Д., Файберг А.А., Епифоров А.В., Баликов С.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Гринько С.Д., Файберг А.А., Епифоров А.В., Баликов С.В.</copyright-holder><copyright-holder xml:lang="en">Grinko S.D., Faiberg A.A., Epiforov A.V., Balikov S.V.</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://ipolytech.elpub.ru/jour/article/view/994">https://ipolytech.elpub.ru/jour/article/view/994</self-uri><abstract><p>Цель – разработка технологии регенерации цианида и осаждения меди из медноцианистых растворов с использованием процесса сульфатредукции. Для исследований использовали смесь штаммов анаэробных сульфатредуцирующих бактерий Desulfonatronum zhilinae, Desulfonatronum cooperativum, Desulfonatronobacter acetoxidans, полученных в институте микробиологии им. С.Н. Виноградского РАН (Москва). Сульфатредукция проводилась при температурах 20–40°С при pH&gt;9,5. В качестве донора электронов использовали этанол, в качестве акцептора – сульфат-ионы. Для определения лимитирующего субстрата (этанола или сульфата) и оптимальных концентраций акцептора и донора электронов использовали математическую модель роста микроорганизмов – уравнение Моно. Результаты расчетов указывают на конкуренцию между субстратами за право лимитировать процесс. Так, при концентрациях &lt;0,3 г/дм3 сульфат является лимитирующим субстратом. А при концентрациях сульфата 0,5–1,0 г/дм3 и этанола 0,1–0,3 г/дм3 лимитирующий субстрат – этанол. Определена точка колимитирования процесса, в которой концентрации сульфата и этанола составляют 0,8 и 0,3 г/дм3 соответственно. Для определения гидравлического времени удерживания жидкой фазы в биореакторе применяли уравнение Моно с учетом ингибирования сероводородом. Определено, что наличие 0,1–0,5 г/дм3 сероводорода в бактериальном растворе приводит к снижению скорости роста бактерий на 27–65%. Гидравлическое время удерживания жидкой фазы в биореакторе в точке ко-лимитирования с учетом ингибирования процесса сероводородом должно составлять около 90 ч. Лабораторные тесты показали, что выбранного расчетным путем гидравлического времени удерживания достаточно для получения 0,25–0,27 г/дм3 сероводорода для осаждения 99% меди и регенерации более 99% цианида. Полученные медные осадки содержали медь и серу – 65 и 35% соответственно. Таким образом, исследуемые микроорганизмы позволяют получать сероводород непосредственно в медноцианидных растворах с различной концентрацией меди, что позволит исключить из технологической цепочки биореактор и все вспомогательные коммуникации для транспортировки сероводорода.</p></abstract><trans-abstract xml:lang="en"><p>The study was aimed at developing a technology for regenerating cyanide and precipitating copper from copper cyanide solutions through the sulfate reduction process. To this end, a mixture of strains of anaerobic sulfate-reducing bacteria was used: Desulfonatronum zhilinae, Desulfonatronum cooperativum, and Desulfonatronobacter acetoxidans from the S.N. Vinogradsky Institute of Microbiology of the Russian Academy of Sciences (Moscow). The sulfate reduction was carried out at temperatures of 20–40℃ and at pH&gt;9.5. Ethanol was used as the electron donor, and sulfate ions were used as the acceptor. In order to ascertain the limiting substrate (ethanol or sulfate) and establish the optimal concentrations of the acceptor and the electron donor, a mathematical microbial growth model was used – the Monod equation. The calculation results indicate substrate competition for the right to limit the process. Thus, at concentrations of &lt;0.3 g/dm3, the limiting substrate is sulfate, whereas at sulfate concentrations of 0.5–1.0 g/dm3 and ethanol concentrations of 0.1–0.3 g/dm3, the limiting substrate is ethanol. The co-limitation point of the process was determined; at this point, the concentrations of sulfate and ethanol are 0.8 and 0.3 g/dm3, respectively. In order to ascertain the hydraulic retention time of the liquid phase in a bioreactor, the Monod equation was used, taking inhibition by hydrogen sulfide into account. The presence of 0.1–0.5 g/dm3 hydrogen sulfide in bacterial solution was found to reduce the bacterial growth rate by 27–65%. The hydraulic retention time of the liquid phase in the bioreactor at the co-limitation point, taking the inhibition by hydrogen sulfide into account, should be equal to approximately 90 hours. Laboratory tests show the calculated hydraulic retention time to be sufficient to obtain 0.25–0.27 g/dm3 hydrogen sulfide for 99% copper precipitation and over 99% cyanide regeneration. The obtained copper precipitates contained copper and sulfur (65% and 35%, respectively). Thus, the examined microorganisms allow hydrogen sulfide to be obtained directly in copper cyanide solutions with different copper concentrations, which eliminates the need for a bioreactor and all auxiliary communications for transporting hydrogen sulfide.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>медь</kwd><kwd>цианид</kwd><kwd>сульфатредукция</kwd><kwd>биогенный сероводород</kwd><kwd>регенерация цианида</kwd><kwd>золотомедная руда</kwd><kwd>извлечение золота</kwd></kwd-group><kwd-group xml:lang="en"><kwd>copper</kwd><kwd>cyanide</kwd><kwd>sulfate reduction</kwd><kwd>biogenic hydrogen sulfide</kwd><kwd>cyanide regeneration</kwd><kwd>gold-copper ore</kwd><kwd>gold recovery</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">Fleming C.A. Cyanide recovery // Gold Ore Processing / eds. M.D. Adams. Ontario, 2016. Chapt. 36. 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