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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.2022.01.077-092</article-id><article-id custom-type="elpub" pub-id-type="custom">alternative-2123</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>Влияние предобработки сточных вод кондитерского производства в аппарате вихревого слоя на выход биоводорода в условиях непрерывной темновой ферментации</article-title><trans-title-group xml:lang="en"><trans-title>Effect of confectionery wastewater pretreatment in a vortex layer apparatus on the biohydrogen production through continuous dark fermentation</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>Михеева</surname><given-names>Э. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikheeva</surname><given-names>E. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михеева Эльза Равилевна – кандидат биологических наук, научный сотрудник лаборатории ресурсосберегающих биотехнологий</p><p>SPIN: 9839-1087Researcher ID: L-8818-2016</p><p>603950, г. Н. Новгород, пр. Гагарина, д. 23</p></bio><bio xml:lang="en"><p>Elza R Mikheeva  – Researcher, Laboratory of Resource-Saving Biotechnology, Candidate of Biological Sciences.</p><p>603950 Nizhnij Novgorod</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1983-3454</contrib-id><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>Катраева Инна Валентиновна – кандидат технических наук, доцент кафедры водоснабжения, водоотведения, инженерной экологии и химии </p><p>SPIN: 3369-3091Researcher ID: O-4715-2016</p><p>603950, г. Н. Новгород, ул. Ильинская, д. 65</p></bio><bio xml:lang="en"><p>Inna V. Katraeva  – associate professor of the chair of water supply, sewage, engineering ecology and chemistry, candidate of technical sciences.</p><p>603950 Nizhnij Novgorod</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><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>A. 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>Ковалев Андрей Александрович – кандидат технических наук, старший научный сотрудник лаборатории биоэнергетических и сверхкритических технологий</p><p>SPIN: 4267-3026Researcher ID: F-7045-2017Scopus Author ID: 57205285134</p><p>109428, Москва, 1-й Институтский проезд, 5</p></bio><bio xml:lang="en"><p>Andrey A. Kovalev  – senior researcher of the laboratory of bioenergy and supercritical technologies, candidate of technical sciences</p><p>109428 Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></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>Ковалев Дмитрий Александрович  – кандидат технических наук, заведующий лабораторией биоэнергетических технологий</p><p>SPIN: 6513-5547Researcher ID: K-4810-2015</p><p>109428, Москва, 1-й Институтский проезд, 5</p></bio><bio xml:lang="en"><p>Dmitry A. Kovalev  – head of the laboratory of bioenergy and supercritical technologies, candidate of technical Sciences</p><p>109428 Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5457-4603</contrib-id><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</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Литти Юрий Владимирович – кандидат биологических наук, заведующий лабораторией микробиологии антропогенных мест обитания</p><p>SPIN: 1487-7611Researcher ID: C-4945-2014Scopus Author ID: 55251689800</p><p>119071 Москва, Ленинский пр-т, 33</p></bio><bio xml:lang="en"><p>Yuriy V. Litti – Head of Laboratory of Microbiology of Anthropogenic Habitats, Candidate of Biological Sciences.</p><p>119071 Moscow</p></bio><email xlink:type="simple">litty-yuriy@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Национальный исследовательский Нижегородский государственный университет им. Н.И. Лобачевского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lobachevsky State University of Nizhni Novgorod</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Нижегородский государственный архитектурно-строительный университет»</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><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное научное учреждение “Федеральный научный агроинженерный центр ВИМ”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Government Budgetary Institution of Science "Federal scientific agroengeneering centre VIM"</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Институт микробиологии им. С.Н. Виноградского, Федеральный исследовательский центр «Фундаментальные основы биотехнологии» Российской академии наук</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><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>07</day><month>04</month><year>2022</year></pub-date><volume>0</volume><issue>1</issue><fpage>77</fpage><lpage>92</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Международный издательский дом научной периодики "Спейс, 2022</copyright-statement><copyright-year>2022</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/2123">https://www.isjaee.com/jour/article/view/2123</self-uri><abstract><p>Биологическое производство водорода из сточных вод производства конфитюра оценивали в непрерывном режиме в анаэробных биофильтрах с восходящим потоком жидкости. Сточные воды подвергались предварительной обработке в аппарате вихревого слоя ферромагнитных частиц (АВС) в течение 1 мин и 3 мин при мощности АВС 14 кВт. Исследования проводили при постепенном снижении HRT в биофильтрах с 5.6 до 1.8 и 1.3 суток, что соответствовало OLR 2,0; 6,3; 8,8 кг ХПК/(м3 сутки). Предобработка в АВС привела к изменению ряда физико-химических характеристик субстрата: незначительному увеличению растворенного ХПК, повышению содержания растворимых сахаров, уксусной кислоты, а также снижению концентрации пропионовой, масляной и капроновой кислот. Показано, что за счет истирания стальных игл в предобработанном субстрате увеличивалась концентрация железа. Несмотря на то, что наибольший выход водорода наблюдали в реакторе без предварительной обработки субстрата в АВС, предобработка способствовала значительному увеличению выхода метана, возможно, за счет увеличения содержания железа в сточной воде. Таким образом, предобработка в АВС может быть перспективным методом улучшения процесса получения метановодородного биогаза (биогитана) из сточных вод.</p></abstract><trans-abstract xml:lang="en"><p>The biological hydrogen production from confectionary wastewater (CWW) was evaluated in a continuous mode in up-flow anaerobic biofilters. Wastewater was pretreated in the vortex layer apparatus (VLA) for 1 and 3 minutes at a power of VLA of 14 kW. HRT in biofilters was gradually decreased from 5.6 to 1.8 and 1.3 days, which corresponded to OLR 2.0; 6.3; 8.8 kg COD/(m3 day). Pretreatment in VLA led to a change in a number of physicochemical characteristics of CWW: a slight increase in soluble COD, an increase in the content of soluble sugars, acetic acid, and a decrease in the concentration of propionic, butyric, and caproic acids. It was shown that due to the abrasion of steel needles in the pretreated CWW, the concentration of iron increased. Despite the fact that the highest yield of hydrogen was observed for unpretreated CWW, the pretreatment in VLA contributed to a significant increase in the methane yield, possibly due to an increase in the iron content in the pretreated CWW. Thus, pretreatment in VLA can be a promising method for improving the process of obtaining biohythane from wastewater.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>биоводород</kwd><kwd>темновая анаэробная ферментация</kwd><kwd>сточные воды кондитерского производства</kwd><kwd>аппарат вихревого слоя (АВС)</kwd><kwd>непрерывный процесс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>biohydrogen</kwd><kwd>dark fermentation</kwd><kwd>confectionery wastewater</kwd><kwd>vortex layer apparatus (VLA)</kwd><kwd>biohythane</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при частичной финансовой поддержке РФФИ в рамках научного проекта № 1829-25042 (Ковалев Д.А., Литти Ю.В), а также при поддержке гранта РНФ № 21-79-10153, https://rscf.ru/project/21-79-10153 (Михеева Э.Р., Катраева И.В., Ковалев А.А.).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Lin, C.-Y.; Lay, C.-H.; Sen, B.; Chu, C.-Y.; Kumar, G.; Chen, C.-C.; Chang, J.-S. 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