najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2024-15-2-285-299najo-61Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХGreen approach to production of porous char adsorbents via oxidative carbonization in fluidized catalyst bed«Зеленый» подход к производству пористых углеродсодержащих адсорбентов путем окислительной карбонизации в кипящем слое катализатораhttps://orcid.org/0000-0001-8899-9039ЕлецкийП. М.YeletskyP. M.

Petr M. Yeletsky.

Acad. Lavrentiev av., 5, Novosibirsk, 630090

yeletsky@catalysis.ruЯзыковН. А.YazykovN. A.

Nikolay A. Yazykov.

Acad. Lavrentiev av., 5, Novosibirsk, 630090

yazykov@catalysis.ruhttps://orcid.org/0000-0002-0786-0500ДубининЮ. В.DubininYu. V.

Yury V. Dubinin.

Acad. Lavrentiev av., 5, Novosibirsk, 630090

dubinin@catalysis.ruhttps://orcid.org/0009-0003-6243-5579БородаевскийМ. М.BorodaevskiyM. M.

Maksim M. Borodaevskiy.

Acad. Lavrentiev av., 5, Novosibirsk, 630090

maxim.borodaevskiy@gmail.comhttps://orcid.org/0000-0003-2768-9680СелищеваС. А.SelishchevaS. A.

Svetlana A. Selishcheva.

Acad. Lavrentiev av., 5, Novosibirsk, 630090

svetlana@catalysis.ruhttps://orcid.org/0000-0001-5015-3521ЯковлевВ. А.YakovlevV. A.

Vadim A. Yakovlev.

Acad. Lavrentiev av., 5, Novosibirsk, 630090

yakovlev@catalysis.ruFederal Research Center Boreskov Institute of Catalysis SB RASRussian Federation202431052025152285299Copyright © Yeletsky P.M., Yazykov N.A., Dubinin Y.V., Borodaevskiy M.M., Selishcheva S.A., Yakovlev V.A., 20252025Елецкий П.М., Языков Н.А., Дубинин Ю.В., Бородаевский М.М., Селищева С.А., Яковлев В.А.Yeletsky P.M., Yazykov N.A., Dubinin Y.V., Borodaevskiy M.M., Selishcheva S.A., Yakovlev V.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/61

A green and energy-efficient technique for production of porous carbon-mineral chars from agricultural wastes (rice husk, wheat bran) and sedimentary carbonaceous feedstocks (high-ash peat, coal) was developed. It is based on partial combustion in fluidized bed of a deep oxidation catalyst at low temperatures (465 – 600 ◦C). This technique yields porous chars with an elevated mineral content that depends on a feed-stock used, and gaseous products of complete oxidation. It was found that the obtained chars have developed porosity with BET specific surface area of ca. 50 – 170 m2g−1, pore volume of 0.05 – 0.17 ml·g−1, and ash content of 16 – 79 wt. %. They were additionally characterized by TGA and FTIR. Their testing as adsorbents for heavy metal ions (by the example of Cu2+) and organic dyes (by the example of methyl green) revealed that their adsorption capacities are comparable to those of chars produced by the conventional pyrolytic approaches.

Разработан экологичный и энергоэффективный подход к получению пористых углерод-минеральных адорбентов из отходов сельского хозяйства (рисовая шелуха, пшеничные отруби) и осадочного углеродсодержащего сырья (высокозольный торф, уголь). Он основан на неполном сжигании в реакторе с кипящим слоем катализатора глубокого окисления при пониженных температурах (465 – 600 °С). Данный подход позволяет получать пористые углеродсодержащие материалы с повышенным содержанием минеральной компоненты, состав и содержание которой зависит от используемого сырья, а также газообразные продукты полного окисления. Было обнаружено, что полученные адсорбенты обладают развитой пористой структурой с удельной поверхностью по БЭТ ~50 – 170 м2·г-1, объемом пор 0,05 – 0,17 мл·г-1, зольностью 16 – 79 мас. %. Данные материалы были дополнительно исследованы методами ТГА и ИК-спектроскопии. Их тестирование в качестве адсорбентов ионов тяжелых металлов (на примере Cu2+) и органических красителей (на примере метилового зеленого) показало, что их адсорбционная способность сравнима с адсорбционной способностью биоуглей, полученных традиционными пиролитическими методами.

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The authors declare that there are no conflicts of interest present.