vuzbiochemiИзвестия вузов. Прикладная химия и биотехнологияProceedings of Universities. Applied Chemistry and Biotechnology2227-29252500-1558ИРНИТУ10.21285/2227-2925-2023-13-2-283-290DPSETEvuzbiochemi-1022Research ArticleХИМИЧЕСКАЯ ТЕХНОЛОГИЯCHEMICAL TECHNOLOGYНанесение защитного покрытия на частицы перкарбоната натрия в аппарате с псевдоожиженным слоемApplication of a protective coating on sodium percarbonate particles in a fluidized bed apparatushttps://orcid.org/0000-0002-7984-1691ЛипинА. А.LipinA. A.

Липин Андрей Александрович - кандидат технических наук, доцент.

153000, Иваново, пр. Шереметевский, 7

Andrey A. Lipin - Cand. Sci. (Engineering), Associate Professor.

7, Sheremetevskiy Ave., Ivanovo, 153000

lipin.a@mail.ruhttps://orcid.org/0000-0003-2011-9503ЛипинА. Г.LipinA. G.

Липин Александр Геннадьевич - доктор технических наук, профессор.

153000, Иваново, пр. Шереметевский, 7

Aleksandr G. Lipin - Dr. Sci. (Engineering), Professor.

7, Sheremetevskiy Ave., Ivanovo, 153000

157lipin@mail.ruИвановский государственный химико-технологический университетРоссияIvanovo State University of Chemistry and TechnologyRussian Federation202302072023132283290Copyright © Липин А.А., Липин А.Г., 20232023Липин А.А., Липин А.Г.Lipin A.A., Lipin A.G.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vuzbiochemi.elpub.ru/jour/article/view/1022

Перкарбонат натрия (ПКН) применяется в качестве экологически чистого отбеливателя в составе синтетических моющих средств. Он является сильным окислителем и несовместим с некоторыми другими компонентами моющего средства, например, ферментами. Решением проблемы может стать применение капсулированного ПКН. Замедленное его высвобождение позволит ферментам работать с максимальной эффективностью до деактивации в присутствии ПКН. Актуальной является задача выбора материала оболочки и необходимой толщины слоя покрытия. В данной работе капсулирование гранул ПКН осуществлялось методом распыления раствора силиката натрия посредством пневматической форсунки на псевдоожиженный слой гранул. Были получены образцы капсулированного ПКН с содержанием покрытия 5, 8, 10, 13% от массы исходного продукта. Исследована кинетика растворения полученных капсул в статических и динамических условиях. При относительной массе оболочки 5% время растворения в динамических условиях составляет 10 мин, при 8% – 14 мин, 10% – 19 мин, 13% – 30 мин. Для прогнозирования профиля выделения активного компонента из капсулированной гранулы ПКН в условиях, отличающихся от проведенных экспериментов, была составлена математическая модель этого процесса. Для параметрической идентификации математической модели путем решения обратной задачи было определено значение эффективного коэффициента диффузии ПКН через капсулу, которое составило 1·10-10 м2/с. Сопоставление расчетных и экспериментальных значений степени выделения ПКН из капсулированных гранул показало их хорошее соответствие.

Sodium percarbonate (SPC) is used as an environmentally friendly bleaching agent in synthetic detergents. This strong oxidizing agent is incompatible with some other detergent components, such as enzymes. This problem can be solved by encapsulating SPC, whose delayed release will allow the enzymes to function with maximum efficiency before deactivation in the presence of SPC. Therefore, the selection of a coating material and the coating layer thickness seems to be a relevant research direction. In this work, SPC granules were encapsulated by spraying a sodium silicate solution through a pneumatic nozzle over a fluidized layer of granules. Encapsulated SPC samples with the coating content of 5, 8, 10 and 13% of the mass of the initial product were obtained. The dissolution kinetics of the obtained capsules under static and dynamic conditions was studied. At the relative coating mass of 5, 8, 10 and 13%, the dissolution time under dynamic conditions comprised 10, 14, 19 and 30 min, respectively. In order to predict the release of the active component from encapsulated SPC under the conditions different from those used in the conducted experiments, a mathematical model of this process was obtained. For parametric identification of the mathematical model by solving an inverse problem, the value of the effective diffusion coefficient of SPC through the capsule was found to be 1·10-10 m2/s. The calculated and experimental values of SPC release from the encapsulated granules showed good agreement.

капсулированиеперкарбонат натрияпсевдоожиженный слойсиликат натриякинетика растворенияencapsulationsodium percarbonatefluidized bedsodium silicatedissolution kineticsВ работе использовано оборудование Центра коллективного пользования Ивановского государственного химико-технологического университета (г. Иваново)The study was carried out using the equipment of the Center for Collective Use, Ivanovo State University of Chemistry and TechnologyReferencesSteber J. The ecotoxicity of cleaning product ingredients. In: Handbook for cleaning/decontamination of surfaces. Elsevier Science, 2007. P. 721–746. https://doi.org/10.1016/B978-044451664-0/50022-X.Steber J. The ecotoxicity of cleaning product ingredients. In: Handbook for cleaning/decontamination of surfaces. Elsevier Science; 2007, p. 721-746. https://doi.org/10.1016/B978-044451664-0/50022-X.Ruiz E.J., Ortega-Borges R., Jurado J.L., Chapman T.W., Meas Y. Simultaneous anodic and cathodic production of sodium percarbonate in aqueous solution // Electrochemical and Solid-State Letters. 2008. Vol. 12, no. 1. https://doi.org/10.1149/1.3005555.Ruiz E.J., Ortega-Borges R., Jurado J.L., Chapman T.W., Meas Y. Simultaneous anodic and cathodic production of sodium percarbonate in aqueous solution. Electrochemical and Solid-State Letters. 2008;12(1). https://doi.org/10.1149/1.3005555.Wada T., Nakano M., Koga N. Multistep kinetic behavior of the thermal decomposition of granular sodium percarbonate: hindrance effect of the outer surface layer // Journal of Physical Chemistry A. 2015. Vol. 119, no. 38. P. 9749–9760. https://doi.org/10.1021/acs.jpca.5b07042.Wada T., Nakano M., Koga N. Multistep kinetic behavior of the thermal decomposition of granular sodium percarbonate: hindrance effect of the outer surface layer. Journal of Physical Chemistry A. 2015;119(38):97499760. https://doi.org/10.1021/acs.jpca.5b07042.Bracken J., Tietz D. Analysis of OxiClean: an interesting comparison of percarbonate stain removers // Journal of Chemical Education. 2005. Vol. 82, no. 5. P. 762–764. https://doi.org/10.1021/ed082p762.Bracken J., Tietz D. Analysis of OxiClean: an interesting comparison of percarbonate stain removers. Journal of Chemical Education. 2005;82(5):762-764. https://doi.org/10.1021/ed082p762.Tredwin C.J., Naik S., Lewis N.J., Scully C. Hydrogen peroxide tooth-whitening (bleaching) products: review of adverse effects and safety issues // British Dental Journal. 2006. Vol. 200. P. 371–376. https://doi.org/10.1038/sj.bdj.4813423.Tredwin C.J., Naik S., Lewis N.J., Scully C. Hydrogen peroxide tooth-whitening (bleaching) products: review of adverse effects and safety issues. British Dental Journal. 2006;200:371-376. https://doi.org/10.1038/sj.bdj.4813423.Bjørsvik H.R., Merinero J.A.V., Liguori L. Nitroarene catalyzed oxidation with sodium percarbonate or sodium perborate as the terminal oxidant // Tetrahedron Letters. 2004. Vol. 45, no. 47. P. 8615–8620. https://doi.org/10.1016/j.tetlet.2004.09.156.Bjørsvik H.R., Merinero J.A.V., Liguori L. Nitroarene catalyzed oxidation with sodium percarbonate or sodium perborate as the terminal oxidant. Tetrahedron Letters. 2004;45(47):8615-8620. https://doi.org/10.1016/j.tetlet.2004.09.156.Li B., Han Z., Ma J., Qiu W., Li W., Zhang B., et al. Novel sodium percarbonate-MnO2 effervescent tablets for efficient and moderate membrane cleaning // Water Research. 2022. Vol. 220. P. 118716. https://doi.org/10.1016/j.watres.2022.118716.Li B., Han Z., Ma J., Qiu W., Li W., Zhang B., et al. Novel sodium percarbonate-MnO2 effervescent tablets for efficient and moderate membrane cleaning. Water Research. 2022;220:118716. https://doi.org/10.1016/j.watres.2022.118716.Koukabi N. Sodium percarbonate: a versatile oxidizing reagent // Synlett. 2010. Vol. 19. P. 2969–2970. https://doi.org/10.1055/s-0030-1258997.Koukabi N. Sodium percarbonate: a versatile oxidizing reagent. Synlett. 2010;19:2969-2970. https://doi.org/10.1055/s-0030-1258997.Xu H., Pang Y., Li Y., Zhang Sh., Pei H. Using sodium percarbonate to suppress vertically distributed filamentous cyanobacteria while maintaining the stability of microeukaryotic communities in drinking water reservoirs // Water Research. 2021. Vol. 197. P. 117111. https://doi.org/10.1016/j.watres.2021.117111.Xu H., Pang Y., Li Y., Zhang Sh., Pei H. Using sodium percarbonate to suppress vertically distributed filamentous cyanobacteria while maintaining the stability of microeukaryotic communities in drinking water reservoirs. Water Research. 2021;197:117111. https://doi.org/10.1016/j.watres.2021.117111.Wada T., Koga N. Kinetics and mechanism of the thermal decomposition of sodium percarbonate: Role of the surface product layer // Journal of Physical Chemistry A. 2013. Vol. 117, no. 9. P. 1880–1889. https://doi.org/10.1021/jp3123924.Wada T., Koga N. Kinetics and mechanism of the thermal decomposition of sodium percarbonate: Role of the surface product layer. Journal of Physical Chemistry A. 2013;117(9):1880-1889. https://doi.org/10.1021/jp3123924.Medvedev A.G., Melnik E.A., Shabalova I.V., Mikhailov A.A., Khitrov N.V., Tripolskaya T.A., et al. Development of combined granulation and encapsulation process in production of sodium percarbonate // Theoretical Foundations of Chemical Engineering. 2017. Vol. 51, no. 4. P. 515–522. https://doi.org/10.1134/S004057951704011X.Medvedev A.G., Melnik E.A., Shabalova I.V., Mikhailov A.A., Khitrov N.V., Tripolskaya T.A., et al. Development of combined granulation and encapsulation process in production of sodium percarbonate. Theoretical Foundations of Chemical Engineering. 2017;51(4):515522. https://doi.org/10.1134/S004057951704011X.Vemmer M., Patel A.V. Review of encapsulation methods suitable for microbial biological control agents // Biological Control. 2013. Vol. 67, no. 3. P. 380–389. https://doi.org/10.1016/j.biocontrol.2013.09.003.Vemmer M., Patel A.V. Review of encapsulation methods suitable for microbial biological control agents. Biological Control. 2013;67(3):380-389. https://doi.org/10.1016/j.biocontrol.2013.09.003.Мухина М.Т., Боровик Р.А., Коршунов А.А. Удобрения пролонгированного действия: основные этапы и направления развития // Плодородие. 2021. N 4. С. 77–82. https://doi.org/10.25680/S19948603.2021.121.23.Mukhina M.T., Borovik R.A., Korshunov A.A. Slowand control-release fertilizers: brief history and modern ternts. Plodorodie. 2021;(4):77-82. (In Russian). https://doi.org/10.25680/S19948603.2021.121.23.Липин А.Г., Небукин В.О., Липин А.А. Капсулирование гранул в полимерные оболочки как метод создания минеральных удобрений с регулируемой скоростью высвобождения питательных веществ // Современные наукоемкие технологии. Региональное приложение. 2017. N 3. С. 86–91.Lipin A.G., Nebukin V.O., Lipin A.A. Encapsulation of granules in polymer chambers as a method for creating mineral fertilizers with a controlled release rate of increase in increase. Sovremennye naukoemkie tekhnologii. Regional’noe prilozhenie. 2017;(3):86-91. (In Russian).Timilsena Y., Haque M., Adhikari B. Encapsulation in the food industry: a brief historical overview to recent developments // Food and Nutrition Sciences. 2020. Vol. 11, no. 6. P. 481–508. https://doi.org/10.4236/fns.2020.116035.Timilsena Y., Haque M., Adhikari B. Encapsulation in the food industry: a brief historical overview to recent developments. Food and Nutrition Sciences. 2020;11(6):481-508. https://doi.org/10.4236/fns.2020.116035.Madlmeir S., Forgber T., Trogrlic M., Jajcevic D., Kape A., Contreras L., et al. Quantifying the coating yield by modeling heat and mass transfer in a Wurster fluidized bed coater // Chemical Engineering Science. 2022. Vol. 252. P. 117505. https://doi.org/10.1016/j.ces.2022.117505.Madlmeir S., Forgber T., Trogrlic M., Jajcevic D., Kape A., Contreras L., et al. Quantifying the coating yield by modeling heat and mass transfer in a Wurster fluidized bed coater. Chemical Engineering Science. 2022;252:117505. https://doi.org/10.1016/j.ces.2022.117505.Липин А.Г., Небукин В.О., Липин А.А. Оценка степени покрытия при капсулировании зернистых материалов в псевдоожиженном слое // Известия высших учебных заведений. Серия: Химия и химическая технология. 2019. Т. 62. N 5. С. 84–90. https://doi.org/10.6060/ivkkt201962fp.5793.Lipin A.G., Nebukin V.O., Lipin A.A. Assessment of coverage degree during granularmaterial encapsulation in fluidized bed. Izvestiya vysshikh uchebnykh zavedenii. Seriya: Khimiya i khimicheskaya tekhnologiya = ChemChemTech. 2019;62(5):84-90. (In Russian). https://doi.org/10.6060/ivkkt201962fp.5793.Lipin A.A., Lipin A.G. Particle coating with composite shell in a pan granulator // Particulate Science and Technology. 2022. Vol. 40, no. 1. P. 123–130. https://doi.org/10.1080/02726351.2021.1927272.Lipin A.A., Lipin A.G. Particle coating with composite shell in a pan granulator. Particulate Science and Technology. 2022;40(1):123-130. https://doi.org/10.1080/02726351.2021.1927272.Li H., Liu D., Ma J., Chen X. Influence of cycle time distribution on coating uniformity of particles in a spray fluidized bed by using CFD-DEM simulations // Particuology. 2023. Vol. 76. P. 151–164. https://doi.org/10.1016/j.partic.2022.08.010.Li H., Liu D., Ma J., Chen X. Influence of cycle time distribution on coating uniformity of particles in a spray fluidized bed by using CFD-DEM simulations. Particuology. 2023;76:151-164. https://doi.org/10.1016/j.partic.2022.08.010.Puga A.V., Gracia-Valls R., Fernandez-Prieto S., Smets J., York D. Dual xanthan gum/poly(vinyl acetate) or alkyl-functionalized poly(vinyl alcohol) films as models for advanced coatings // Journal of Applied Polymer Science. 2014. Vol. 131, no. 19. https://doi.org/10.1002/APP.40870.Puga A.V., Gracia-Valls R., Fernandez-Prieto S., Smets J., York D. Dual xanthan gum/poly(vinyl acetate) or alkyl-functionalized poly(vinyl alcohol) films as models for advanced coatings. Journal of Applied Polymer Science. 2014;131(19). https://doi.org/10.1002/APP.40870.

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