kaz65Почвоведение и агрохимияSoil Science and Agrichemistry1999-740X2959-3433Казахский научно-исследовательский институт почвоведения и агрохимии имени У.У. Успановаkaz65-612Research ArticleЭкология почвSoil ecologyРАЗРАБОТКА ТЕХНОЛОГИИ ПОЛУЧЕНИЯ ЧИСТОГО ОКСИДА КРЕМНИЯ ИЗ РИСОВОЙ ШЕЛУХИDEVELOPMENT OF TECHNOLOGY FOR PRODUCTION OF PURE SILICA FROM RICE HUSKSАскарулыК. .AskarulyK. .noemail@neicon.ruАзатС. .AzatS. .seytkhan.azat@gmail.comКазахский национальный исследовательский технический университет имени К. И. СатпаеваКазахстанSatbayev UniversityKazakhstanКазахский национальный университет имени аль-Фараби; Институт проблем горенияКазахстанAl-Farabi Kazakh National UniversityKazakhstan2019071120220292102Copyright © Аскарулы К..., Азат С..., 20222022Аскарулы К..., Азат С...Askaruly K..., Azat S...Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://journal.soil.kz/jour/article/view/612

Данное исследование направлено на разработку нового метода получения высококачественного чистого оксида кремния из рисовой шелухи из разных регионов Казахстана. Предлагаемый способ является экологически чистым и использует значительное количество неорганических щелочей и кислот, описанных в литературе, и сравнивается с методом прямого сжигания. Чтобы минимизировать воздействие на окружающую среду, минеральная кислотная фаза была удалена или заменена органической кислотой в предварительной обработке. На основании термогравиметрического анализа была выбрана температура прокаливания 600°C. Средняя чистота образцов оксида кремния, полученных различными методами, находилась в диапазоне от 84,5 до 99,66 %. При использовании экологического метода чистота оксида кремния была высокой, а площадь поверхности достигала 625 м2/г.

This study aims to develop a new method of obtaining high-quality pure silicon oxide from rice husk from different regions of Kazakhstan. The proposed method is environmentally friendly and uses a significant amount of inorganic alkalis and acids described in the literature, and is compared with the method of direct combustion. To minimize environmental impact, the mineral acid phase was removed or replaced with organic acid in a pretreatment. Based on the thermo-gravimetric analysis, the calcination temperature of 600°C was chosen. The average purity of the silica samples obtained by various methods ranged from 84.5 to 99.66 %. When using the ecological method, the purity of silicon oxide was high, and the surface area reached 625 m2/g. Key words: rice husk, hydrochloric acid, silicon, silicon oxide, BET.

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