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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">alternative</journal-id><journal-title-group><journal-title xml:lang="ru">Альтернативная энергетика и экология (ISJAEE)</journal-title><trans-title-group xml:lang="en"><trans-title>Alternative Energy and Ecology (ISJAEE)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1608-8298</issn><publisher><publisher-name>Международный издательский дом научной периодики "Спейс</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15518/isjaee.2020.07-18.87-100</article-id><article-id custom-type="elpub" pub-id-type="custom">alternative-1927</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>IV. ВОДОРОДНАЯ ЭКОНОМИКА 12. Водородная экономика</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>IV. HYDROGEN ECONOMY. 12. Hydrogen Economy</subject></subj-group></article-categories><title-group><article-title>Производство биоводорода в двухстадийном процессе анаэробной биоконверсии органического  вещества жидких органических отходов с рециркуляцией эффлюента метантенка</article-title><trans-title-group xml:lang="en"><trans-title>Biohydrogen Production in the Two-Stage Process of Anaerobic Bioconversion of Organic Substance  of Liquid Organic Waste with Recycle of Digister Effluent</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1983-3454</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ковалев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Александрович Ковалев, канд. техн. наук, старший научный сотрудник лаборатории биоэнергетических и сверхкритических технологий</p><p>SPIN: 4267-3026</p><p>Researcher ID: F-7045-2017 </p><p>Scopus Author ID: 57205285134 </p><p>д. 5, 1-й Институтский проезд, г. Москва, 109428, Россия</p></bio><bio xml:lang="en"><p>Andrey Kovalev, PhD in Engineering, Senior Researcher at the Laboratory of Bioenergy and Supercritical Technologies</p><p>SPIN: 4267-3026</p><p>Researcher ID: F-7045-2017 </p><p>Scopus Author ID: 57205285134 </p><p>5 1st Irkutskiy proezd, Moscow, 109428, Russia</p></bio><email xlink:type="simple">kovalev_ana@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3603-3686</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ковалев</surname><given-names>Д А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalev</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Александрович Ковалев, канд. техн. наук, заведующий лабораторией биоэнергетических и сверхкритических технологий</p><p>SPIN: 6513-5547 Researcher ID: K-4810-2015</p><p>д. 5, 1-й Институтский проезд, г. Москва, 109428, Россия</p></bio><bio xml:lang="en"><p>Dmitry  Kovalev,PhD in Engineering, Head of the Laboratory of Bioenergy and Supercritical Technologies</p><p>SPIN: 6513-5547 Researcher ID: K-4810-2015</p><p>5 1st Irkutskiy proezd, Moscow, 109428, Russia</p></bio><email xlink:type="simple">kovalev_ana@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>Литти</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Litti 2</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юрий Владимирович Литти, канд. биолог. наук, старший научный сотрудник лаборатории микробиологии антропогенных мест обитания</p><p>SPIN: 1487-7611 Researcher ID: C-4945-2014</p><p>стр. 2, д. 33, Ленинский просп., г. Москва, 119071, Россия </p></bio><bio xml:lang="en"><p>Habitats</p><p>SPIN: 1487-7611 Researcher ID: C-4945-2014</p><p>Bld. 2, 33 Leninskiy Ave., Moscow, 119071, Russia </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Катраева</surname><given-names>И В.</given-names></name><name name-style="western" xml:lang="en"><surname>Katraeva</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Инна Валентиновна Катраева, канд. техн. наук, доцент кафедры водоснабжения, водоотведения, инженерной экологии и химии</p><p>SPIN: 3369-3091 Researcher ID: O-4715-2016</p><p>д. 65, ул. Ильинская, г. Нижний Новгород, 603950, Россия </p></bio><bio xml:lang="en"><p>Inna Katraeva, PhD in Engineering, Associate Professor of the Chair of Water Supply, Sewage, Engineering Ecology and Chemistry</p><p>SPIN: 3369-3091 Researcher ID: O-4715-2016</p><p>65 Il'inskaya Str., Nizhny Novgorod, 603950, Russia </p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ ФНАЦ ВИМ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Scientific Agroengineering Centre VIM</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГУ ФИЦ Биотехнологии РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Centre "Fundamentals of Biotechnology" of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБОУ ВО ННГАСУ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Nizhny Novgorod State University of Architecture and Civil Engineering</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>19</day><month>08</month><year>2020</year></pub-date><volume>0</volume><issue>7-18</issue><fpage>87</fpage><lpage>100</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Международный издательский дом научной периодики "Спейс, 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Международный издательский дом научной периодики "Спейс</copyright-holder><copyright-holder xml:lang="en">Международный издательский дом научной периодики "Спейс</copyright-holder><license xlink:href="https://www.isjaee.com/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.isjaee.com/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.isjaee.com/jour/article/view/1927">https://www.isjaee.com/jour/article/view/1927</self-uri><abstract><p>В настоящее время водородная энергетика приобретает все большую популярность в мире в связи с истощением невозобновляемых источников энергии (углеводородов) и экологического загрязнения, вызванного растущим потреблением этих источников. По сравнению с электро- или термохимическими процессами, биологическое получение водорода имеет ряд преимуществ – экологичность и низкую стоимость. Особенно перспективен темновой процесс получения водородсодержащего биогаза при переработке органических отходов в анаэробных условиях, поскольку позволяет решить две задачи: производство энергии и утилизация органических отходов. В работе рассмотрено получение биоводорода в двухстадийном процессе анаэробной биоконверсии органического вещества жидких органических отходов в непрерывном режиме в реакторах с увеличенным объемом. Описана экспериментальная установка для исследования данного процесса и постановка эксперимента по изучению влияния рециркуляции эффлюента метантенка в анаэробный биореактор для производства биоводорода. Установлено, что полученные экспериментальные данные по удельному выходу биоводорода согласуются с данными других авторов. Средний удельный выход биоводорода (на килограмм исходного органического вещества) при рециркуляции эффлюента метантенка повысился на 4 % (с 0,1046 м3/(сут·кг ОВисх) до 0,1087 м3/(сут·кг ОВисх). Кроме того, рециркуляция эффлюента метантенка в реактор получения биоводорода в процессе двухстадийной анаэробной биоконверсии позволяет уменьшить колебания выхода биоводорода из реактора. При этом метаногенная активность в анаэробном биореакторе для производства биоводорода отсутствовала. Самоустанавливающийся уровень рН в анаэробном биореакторе для получения биоводорода был менее 4,5 (3,94 без рециркуляции эффлюента и 3,88 с рециркуляцией), однако ингибирования процесса образования водорода не происходило. Установлено, что применение рециркуляции эффлюента метантенка в анаэробный биореактор получения биоводорода может способствовать повышению эффективности процесса двухстадийной анаэробной биоконверсии органических отходов при сохранении стабильности процесса.</p></abstract><trans-abstract xml:lang="en"><p>At present, hydrogen energy is gaining immense popularity in the world due to the problem of depletion of nonrenewable energy sources, hydrocarbons, and environmental pollution caused by their growing consumption. Compared with electro- or thermochemical processes, the biological production of hydrogen has a number of advantages associated with greater environmental friendliness and low cost. Of particular interest is the dark process of producing hydrogen-containing biogas in the processing of organic waste under anaerobic conditions which allows you to take advantage of both energy production and solving the problem of recycling organic waste. This paper considers the production of biohydrogen in a two-stage process of anaerobic bioconversion of organic matter of liquid organic waste. Moreover, experimental studies were carried out continuously in reactors with increased volume. The article describes an experimental setup for investigating a two-stage process of anaerobic bioconversion of organic matter of liquid organic waste and setting up an experiment to study the effect of recycling the effluent of methantenk into an anaerobic bioreactor for the production of biohydrogen. The obtained experimental data on the specific yield of biohydrogen are consistent with the data obtained by other authors. The average specific yield of biohydrogen (per kilogram of initial organic matter) during recycling of the methantenk effluent increased by 4 % (from 0.1046 to 0.1087 m3 / (day * kg of OMin)). In addition, recycling of the methantenk effluent to the biohydrogen production reactor during two-stage anaerobic bioconversion allows us to reduce fluctuations in the output of biohydrogen from the reactor. At the same time, there is no methanogenic activity in the anaerobic bioreactor for the production of biohydrogen. The self-stabilizing pH level in the anaerobic bioreactor for producing biohydrogen is less than 4.5 (3.94 without effluent recirculation and 3.88 with recirculation), however, there is no inhibition of hydrogen formation. Thus, the use of recirculation of the methantenk effluent into the anaerobic bioreactor for producing biohydrogen can enhance the efficiency of the two-stage anaerobic bioconversion of organic waste while maintaining the stability of the process.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>двухстадийный анаэробный процесс</kwd><kwd>темновое брожение</kwd><kwd>биоводород</kwd><kwd>рециркуляция эффлюента метантенка</kwd><kwd>органические отходы</kwd><kwd>биогаз</kwd><kwd>метаногенез</kwd></kwd-group><kwd-group xml:lang="en"><kwd>two-stage anaerobic process</kwd><kwd>dark fermentation</kwd><kwd>biohydrogen</kwd><kwd>recirculation of methantenk effluent</kwd><kwd>organic waste</kwd><kwd>biogas</kwd><kwd>methanogenesis</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">Ножевникова, А.Н. 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