kaz44Вестник Университета Шакарима. Серия технические наукиBulletin of Shakarim University. Technical Sciences2788-79953006-0524«Шәкәрім университеті» КеАҚ10.53360/2788-7995-2024-2(14)-51kaz44-970Research ArticleХИМИЧЕСКАЯ ТЕХНОЛОГИЯ (ОРИГИНАЛЬНАЯ СТАТЬЯ)CHEMICAL TECHNOLOGY (ORIGINAL ARTICLE)ОБЗОР ПО ПЕРЕРАБОТКЕ УГОЛЬНОЙ ЛЕТУЧЕЙ ЗОЛЫ: ТЕКУЩИЕ ДОСТИЖЕНИЯ И ПЕРСПЕКТИВЫ НА БУДУЩЕЕREVIEW ON PROCESSING COAL FLY ASH: CURRENT ADVANCES AND FUTURE PERSPECTIVEShttps://orcid.org/0009-0006-0013-1926КамунурК.KamunurK.

Кастер Камунур – PhD доктор, ведущий научный сотрудник, РГП на ПХВ 

050012, Республика Казахстан, г. Алматы, ул. Богенбай батыра, 172050012, Республика Казахстан, г. Алматы, пр. аль-Фараби, 71 

Кaster Kamunur – PhD, Senior Researcher

050012, Kazakhstan, Almaty, Bogenbay batyr str., 172

0500112, Kazakhstan, Almaty, Al-Farabi ave., 71

kamunur.k@mail.ruhttps://orcid.org/0000-0001-6724-0496ОсеровТ.OserovT.

Тимур Осеров – PhD доктор, ведущий научный сотрудник, РГП на ПХВ 

050012, Республика Казахстан, г. Алматы, ул. Богенбай батыра, 172

Timur Osserov – PhD, Senior Researcher

050012, Kazakhstan, Almaty, Bogenbay batyr str., 172

x_tios_x@mail.ruhttps://orcid.org/0000-0002-9881-1324МусапироваЛ.MussapirovaL.

Ляззат Мусапирова – PhD доктор, научный сотрудник, РГП на ПХВ 

050012, Республика Казахстан, г. Алматы, ул. Богенбай батыра, 172

Lyazzat Musapirova – PhD, Researcher

050012, Kazakhstan, Almaty, Bogenbay batyr str., 172

lyazko@inbox.ruhttps://orcid.org/0000-0002-2271-6953БаткалА.BatkalA.

Aйсулу Баткал – PhD студент, научный сотрудник, РГП на ПХВ

050012, Республика Казахстан, г. Алматы, ул. Богенбай батыра, 172050012, Республика Казахстан, г. Алматы, пр. аль-Фараби, 71 

Aisulu Batkal – PhD student, Researcher

050012, Kazakhstan, Almaty, Bogenbay batyr str., 172

0500112, Kazakhstan, Almaty, Al-Farabi ave., 71 

abatkalova@mail.ruИнститут проблем горения; Казахский национальный университет им. аль-ФарабиКазахстанInstitute of Combustion Problems; Al-Farabi Kazakh National UniversityKazakhstanИнститут проблем горенияКазахстанInstitute of Combustion ProblemsKazakhstan20242906202412(14)410423Copyright © Камунур К., Осеров Т., Мусапирова Л., Баткал А., 20242024Камунур К., Осеров Т., Мусапирова Л., Баткал А.Kamunur K., Oserov T., Mussapirova L., Batkal A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://tech.vestnik.shakarim.kz/jour/article/view/970

Целью данного обзора является анализ методов переработки угольной летучей золы (УЛЗ) и их последствий. В исследовании рассматривается исследовательская проблема повышения эффективности использования УЛЗ при минимизации воздействия на окружающую среду. Обзор основан на принципах устойчивого развития, экономики замкнутого цикла и ресурсосбережения. Он опирается на теории, связанные с обращением с отходами, материаловедением и инженерной экологией. Был проведен систематический обзор литературы, проанализированы исследовательские статьи, технические отчеты и отраслевые публикации. Обзор включает всестороннее изучение методов переработки, включая разделение, обогащение, утилизацию и методы обработки. Используемые методы исследования включали синтез данных и анализ выявленных исследований. В обзоре освещаются эффективность и ограничения различных методов обработки УЛЗ, таких как электростатическая сепарация, магнитная сепарация и пенная флотация. В нем представлена информация об улучшениях, достигнутых в результате обработки, включая повышение качества УЛЗ, расширение сферы применения и рекуперацию ресурсов. Полученные результаты подчеркивают важность всесторонней характеристики УЛЗ, понимания его состава и свойств, а также оптимизации методов обработки для максимизации его потенциала. Исследование способствует академическому пониманию методов обработки УЛЗ, обеспечивая основу для дальнейших исследований в этой области. С управленческой точки зрения он предлагает рекомендации отраслям, участвующим в утилизации УЛЗ, продвигая устойчивые методы обращения с отходами и ресурсосбережения. Обзор имеет значительные социальные последствия, поскольку снижает воздействие на окружающую среду, связанное с утилизацией УЛЗ, и поддерживает развитие принципов экономики замкнутого цикла.

This review aims to analyze the processing techniques employed for coal fly ash (CFA) and their implications. The study addresses the research problem of enhancing CFA utilization while minimizing environmental impacts. The review is based on the principles of sustainable development, circular economy, and resource conservation. It draws upon theories related to waste management, materials science, and environmental engineering. A systematic literature review was conducted, analyzing research articles, technical reports, and industry publications. The review encompasses a comprehensive examination of processing techniques, including separation, beneficiation, utilization, and treatment methods. The research techniques employed involved data synthesis and analysis of the identified studies. The review highlights the effectiveness and limitations of various processing techniques for CFA, such as electrostatic separation, magnetic separation, and froth flotation. It provides insights into the improvements achieved through processing, including enhanced CFA quality, expanded applications, and resource recovery. The findings emphasize the importance of comprehensive characterization of CFA, understanding its composition and properties, and optimizing processing methods to maximize its potential. The research contributes to the academic understanding of CFA processing techniques, providing a foundation for further studies in the field. Managerially, it offers guidance to industries involved in CFA utilization, promoting sustainable waste management practices and resource conservation. The review has significant social implications by reducing the environmental impact associated with CFA disposal and supporting the development of circular economy principles.

угольная летучая золапереработка угольной летучей золыфизическое разделениехимическое разделениеутилизация угольной золыcoal fly ashcoal fly ash processingphysical separationchemical separationutilization of coal fly ashThis research was funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (Grant № BR21882017).ReferencesStatus of coal-based thermal power plants, coal fly ash production, utilization in India and their emerging applications / V.K. Yadav et al // Minerals. – 2022. – Vol. 12, № 12. – P.1503. DOI: https://doi.org/10.3390/min12121503.Status of coal-based thermal power plants, coal fly ash production, utilization in India and their emerging applications / V.K. Yadav et al // Minerals. – 2022. – Vol. 12, № 12. – P.1503. DOI: https://doi.org/10.3390/min12121503.Vig N. The multiple value characteristics of fly ash from Indian coal thermal power plants: a review / N. Vig, S. Mor., K. Ravindra // Environmental Monitoring and Assessment. – 2023. – Vol. 195, № 1. – Р.33. DOI: https://doi.org/10.1007/s10661-022-10473-2.Vig N. The multiple value characteristics of fly ash from Indian coal thermal power plants: a review / N. Vig, S. Mor., K. Ravindra // Environmental Monitoring and Assessment. – 2023. – Vol. 195, № 1. – Р.33. DOI: https://doi.org/10.1007/s10661-022-10473-2.Blissett R.S. A review of the multi-component utilisation of coal fly ash / R.S. Blissett, N.A. Rowson // Fuel. – 2012. – Vol. 97. – P.1-23. DOI: https://doi.org/10.1016/j.fuel.2012.03.024.Blissett R.S. A review of the multi-component utilisation of coal fly ash / R.S. Blissett, N.A. Rowson // Fuel. – 2012. – Vol. 97. – P.1-23. DOI: https://doi.org/10.1016/j.fuel.2012.03.024.Czech T. Morphology and chemical composition of magnetic particles separated from coal fly ash / T. Czech // Materials. – 2022. – Vol. 15, № 2. – P. 28. DOI: https://doi.org/10.3390/ma15020528.Czech T. Morphology and chemical composition of magnetic particles separated from coal fly ash / T. Czech // Materials. – 2022. – Vol. 15, № 2. – P. 28. DOI: https://doi.org/10.3390/ma15020528.Liu H. Particle size distributions of fly ash arising from vaporized components of coal combustion: A comparison of theory and experiment / H. Liu, Y. Wang, J.O. Wendt // Energy & Fuels. – 2017. – Vol. 32, № 4. – P.4300-4307.Liu H. Particle size distributions of fly ash arising from vaporized components of coal combustion: A comparison of theory and experiment / H. Liu, Y. Wang, J.O. Wendt // Energy & Fuels. – 2017. – Vol. 32, № 4. – P.4300-4307.New potential demulsifiers obtained by processing gossypol resin / N.S. Otarbaev et al // Indonesian Journal of Chemistry. – 2019. – Vol, 19, № 4. – P.959-966. DOI: https://doi.org/10.22146/ijc.38671.New potential demulsifiers obtained by processing gossypol resin / N.S. Otarbaev et al // Indonesian Journal of Chemistry. – 2019. – Vol, 19, № 4. – P.959-966. DOI: https://doi.org/10.22146/ijc.38671.Quartz particles electron-microscopic investigations modified by mechanochemical processing / N.N. Mofa et al // Eurasian Chemico-Technological Journal. – 2003. – Vol. 5, № 4. – Р. 297-303. DOI: https://doi.org/10.18321/ectj317.Quartz particles electron-microscopic investigations modified by mechanochemical processing / N.N. Mofa et al // Eurasian Chemico-Technological Journal. – 2003. – Vol. 5, № 4. – Р. 297-303. DOI: https://doi.org/10.18321/ectj317.Gollakota A.R. Progressive utilisation prospects of coal fly ash: A review / A.R. Gollakota, V. Volli, C.M. Shu // Science of the Total Environment. – 2019. – Vol. 672. – P.951-989. DOI: https://doi.org/10.1016/j.scitotenv.2019.03.337.Gollakota A.R. Progressive utilisation prospects of coal fly ash: A review / A.R. Gollakota, V. Volli, C.M. Shu // Science of the Total Environment. – 2019. – Vol. 672. – P.951-989. DOI: https://doi.org/10.1016/j.scitotenv.2019.03.337.Dwivedi A. Fly ash-waste management and overview: A Review / A. Dwivedi, M.K. Jain // Recent Research in Science and Technology. – 2014. – Vol. 6, № 1.Dwivedi A. Fly ash-waste management and overview: A Review / A. Dwivedi, M.K. Jain // Recent Research in Science and Technology. – 2014. – Vol. 6, № 1.Krasnyi B.L. Fly ash as technogenic raw material for producing refractory and insulating ceramic materials / B.L. Krasnyi et al // Glass and Ceramics. – 2021. – Vol. 78. – P. 48-56. DOI: https://doi.org/10.1007/s10717-021-00347-3.Krasnyi B.L. Fly ash as technogenic raw material for producing refractory and insulating ceramic materials / B.L. Krasnyi et al // Glass and Ceramics. – 2021. – Vol. 78. – P. 48-56. DOI: https://doi.org/10.1007/s10717-021-00347-3.Physico-Chemical Study of the Possibility of Utilization of Coal Ash by Processing as Secondary Raw Materials to Obtain A Composite Cement Clinker / B. Muratov et al // Journal of Composites Science. – 2023. – Vol. 7, № 6. – P.234. DOI: https://doi.org/10.3390/jcs7060234.Physico-Chemical Study of the Possibility of Utilization of Coal Ash by Processing as Secondary Raw Materials to Obtain A Composite Cement Clinker / B. Muratov et al // Journal of Composites Science. – 2023. – Vol. 7, № 6. – P.234. DOI: https://doi.org/10.3390/jcs7060234.Panda L. Characterization and utilization of coal fly ash: a review / L. Panda, S. Dash // Emerging Materials Research. – 2020. – Vol. 9, № 3. – Р. 921-934. DOI: https://doi.org/10.1680/jemmr.18.00097.Panda L. Characterization and utilization of coal fly ash: a review / L. Panda, S. Dash // Emerging Materials Research. – 2020. – Vol. 9, № 3. – Р. 921-934. DOI: https://doi.org/10.1680/jemmr.18.00097.A comprehensive review on the applications of coal fly ash / Z.T. Yao et al // Earth-science reviews. – 2015. – Vol. 141. – P.105-121. DOI: https://doi.org/10.1016/j.earscirev.2014.11.016.A comprehensive review on the applications of coal fly ash / Z.T. Yao et al // Earth-science reviews. – 2015. – Vol. 141. – P.105-121. DOI: https://doi.org/10.1016/j.earscirev.2014.11.016.Alehyen S. Characterization, microstructure and properties of fly ash-based geopolymer / S. Alehyen, M.E.L. Achouri, M. Taibi // J. Mater. Environ. Sci. – 2017. – Vol. 8, № 5. – Р. 1783-1796.Alehyen S. Characterization, microstructure and properties of fly ash-based geopolymer / S. Alehyen, M.E.L. Achouri, M. Taibi // J. Mater. Environ. Sci. – 2017. – Vol. 8, № 5. – Р. 1783-1796.A review of the alumina recovery from coal fly ash, with a focus in China / Z.T. Yao et al // Fuel. – 2014. – Vol. 120. – P. 74-85. DOI: https://doi.org/10.1016/j.fuel.2013.12.003.A review of the alumina recovery from coal fly ash, with a focus in China / Z.T. Yao et al // Fuel. – 2014. – Vol. 120. – P. 74-85. DOI: https://doi.org/10.1016/j.fuel.2013.12.003.Utilization of radioactive high-calcium Mongolian flyash for the preparation of alkali-activated geopolymers for safe use as construction materials / J. Temuujin et al // Ceramics International. – 2014. – Vol. 40, № 10. – Р.16475-16483. DOI: https://doi.org/10.1016/j.ceramint.2014.07.157.Utilization of radioactive high-calcium Mongolian flyash for the preparation of alkali-activated geopolymers for safe use as construction materials / J. Temuujin et al // Ceramics International. – 2014. – Vol. 40, № 10. – Р.16475-16483. DOI: https://doi.org/10.1016/j.ceramint.2014.07.157.Toxicity mitigation and solidification of municipal solid waste incinerator fly ash using alkaline activated coal ash / E.I. Diaz-Loya et al // Waste Management. – 2012. – Vol. 32, № 8. – Р. 1521-1527. DOI: https://doi.org/10.1016/j.wasman.2012.03.030.Toxicity mitigation and solidification of municipal solid waste incinerator fly ash using alkaline activated coal ash / E.I. Diaz-Loya et al // Waste Management. – 2012. – Vol. 32, № 8. – Р. 1521-1527. DOI: https://doi.org/10.1016/j.wasman.2012.03.030.Recycling of coal fly ash as an example of an efficient circular economy: A stakeholder approach / O. Marinina et al // Energies. – 2021. – Vol. 14, № 12. – Р. 3597. DOI: https://doi.org/10.3390/en14123597.Recycling of coal fly ash as an example of an efficient circular economy: A stakeholder approach / O. Marinina et al // Energies. – 2021. – Vol. 14, № 12. – Р. 3597. DOI: https://doi.org/10.3390/en14123597.Fly ash pollutants, treatment and recycling / A. Gianoncelli et al // Pollutant diseases, remediation and recycling. – 2013. – P. 103-213. DOI: https://doi.org/10.1007/978-3-319-02387-8_3.Fly ash pollutants, treatment and recycling / A. Gianoncelli et al // Pollutant diseases, remediation and recycling. – 2013. – P. 103-213. DOI: https://doi.org/10.1007/978-3-319-02387-8_3.Zero-waste approach in municipal solid waste incineration: Reuse of bottom ash to stabilize fly ash / A. Assi et al // Journal of cleaner production. – 2020. – Vol. 245. – P. 118779. DOI: https://doi.org/10.1016/j.jclepro.2019.118779.Zero-waste approach in municipal solid waste incineration: Reuse of bottom ash to stabilize fly ash / A. Assi et al // Journal of cleaner production. – 2020. – Vol. 245. – P. 118779. DOI: https://doi.org/10.1016/j.jclepro.2019.118779.Chemical stability of geopolymers containing municipal solid waste incinerator fly ash / I. Lancellotti et al // Waste Management. – 2010. – Vol. 30, № 4. – P. 673-679. DOI: https://doi.org/10.1016/j.wasman.2009.09.032.Chemical stability of geopolymers containing municipal solid waste incinerator fly ash / I. Lancellotti et al // Waste Management. – 2010. – Vol. 30, № 4. – P. 673-679. DOI: https://doi.org/10.1016/j.wasman.2009.09.032.Extraction of value-added minerals from various agricultural, industrial and domestic wastes / V.K. Yadav et al // Materials. – 2021. – Vol. 14, № 21. – P. 6333. DOI: https://doi.org/10.3390/ma14216333.Extraction of value-added minerals from various agricultural, industrial and domestic wastes / V.K. Yadav et al // Materials. – 2021. – Vol. 14, № 21. – P. 6333. DOI: https://doi.org/10.3390/ma14216333.Synthesis and characterisation of pure phase ZSM-5 and sodalite zeolites from coal fly ash / N.Z. Ndlovu et al // Materials Today Communications. – 2023. – Vol. 34. – P. 105436. DOI: https://doi.org/10.1016/j.mtcomm.2023.105436.Synthesis and characterisation of pure phase ZSM-5 and sodalite zeolites from coal fly ash / N.Z. Ndlovu et al // Materials Today Communications. – 2023. – Vol. 34. – P. 105436. DOI: https://doi.org/10.1016/j.mtcomm.2023.105436.Biomass fly ash as an alternative to coal fly ash in blended cements: Functional aspects / J. Fořt et al // Construction and Building Materials. – 2021. – Vol. 271. – P. 121544. DOI: https://doi.org/10.1016/j.conbuildmat.2020.121544.Biomass fly ash as an alternative to coal fly ash in blended cements: Functional aspects / J. Fořt et al // Construction and Building Materials. – 2021. – Vol. 271. – P. 121544. DOI: https://doi.org/10.1016/j.conbuildmat.2020.121544.Effect of seawater salinity on the synthesis of zeolite from coal fly ash / Y. Yu et al // Frontiers of Environmental Science & Engineering. – 2014. – Vol. 8. – P. 54-61. DOI: https://doi.org/10.1007/s11783-013-0493-4.Effect of seawater salinity on the synthesis of zeolite from coal fly ash / Y. Yu et al // FrontiersShaheen S.M. Opportunities and challenges in the use of coal fly ash for soil improvements–a review / S.M. Shaheen, P.S. Hooda, C.D. Tsadilas // Journal of environmental management. – 2014. – Vol. 145. – P. 249-267. DOI: https://doi.org/10.1016/j.jenvman.2014.07.005.of Environmental Science & Engineering. – 2014. – Vol. 8. – P. 54-61. DOI: https://doi.org/10.1007/s11783-013-0493-4.Shemi A., Ndlovu S., Sibanda V., Van Dyk L.D. Extraction of alumina from coal fly ash using an acid leach-sinter-acid leach technique // Hydrometallurgy. – 2015. – Vol.157. – P. 348-355. DOI: https://doi.org/10.1016/j.hydromet.2015.08.023.Shaheen S.M. Opportunities and challenges in the use of coal fly ash for soil improvements–a review / S.M. Shaheen, P.S. Hooda, C.D. Tsadilas // Journal of environmental management. – 2014. – Vol. 145. – P. 249-267. DOI: https://doi.org/10.1016/j.jenvman.2014.07.005.Bendapudi S.C.K. Contribution of fly ash to the properties of mortar and concrete / S.C.K. Bendapudi, P. Saha // International Journal of Earth Sciences and Engineering. – 2011. – Vol. 4, № 6. – P. 1017-1023.Shemi A., Ndlovu S., Sibanda V., Van Dyk L.D. Extraction of alumina from coal fly ash using an acid leach-sinter-acid leach technique // Hydrometallurgy. – 2015. – Vol.157. – P. 348-355. DOI: https://doi.org/10.1016/j.hydromet.2015.08.023.Enrichment characteristics, thermal stability and volatility of hazardous trace elements in fly ash from a coal-fired power plant / S. Zhao et al // Fuel. – 2018. – Vol. 225. – P. 490-498. DOI: https://doi.org/10.1016/j.fuel.2018.03.190.Bendapudi S.C.K. Contribution of fly ash to the properties of mortar and concrete / S.C.K. Bendapudi, P. Saha // International Journal of Earth Sciences and Engineering. – 2011. – Vol. 4, № 6. – P. 1017-1023.Leachability and adverse effects of coal fly ash: A review / N. Wang // Journal of hazardous materials. – 2020. – Vol. 396. – P. 122725. DOI: https://doi.org/10.1016/j.jhazmat.2020.122725.Enrichment characteristics, thermal stability and volatility of hazardous trace elements in fly ash from a coal-fired power plant / S. Zhao et al // Fuel. – 2018. – Vol. 225. – P. 490-498. DOI: https://doi.org/10.1016/j.fuel.2018.03.190.Chemical stabilization remediation for heavy metals in contaminated soils on the latest decade: Available stabilizing materials and associated evaluation methods-A critical review / D.M. Xu et al // Journal of Cleaner Production. – 2021. – Vol. 321. – P. 128730. DOI: https://doi.org/10.1016/j.jclepro.2021.128730/Leachability and adverse effects of coal fly ash: A review / N. Wang // Journal of hazardous materials. – 2020. – Vol. 396. – P. 122725. DOI: https://doi.org/10.1016/j.jhazmat.2020.122725.Recovery of metals and other beneficial products from coal fly ash: A sustainable approach for fly ash management / P.K. Sahoo et al // International Journal of Coal Science & Technology. – 2016. – Vol. 3, № 3. – P. 267-283. DOI: https://doi.org/10.1007/s40789-016-0141-2.Chemical stabilization remediation for heavy metals in contaminated soils on the latest decade: Available stabilizing materials and associated evaluation methods-A critical review / D.M. Xu et al // Journal of Cleaner Production. – 2021. – Vol. 321. – P. 128730. DOI: https://doi.org/10.1016/j.jclepro.2021.128730/Nandanam K. Effect of fly ash, GGBS, and metakaolin on mechanical and durability properties of self-compacting concrete made with 100% coarse recycled aggregate / K. Nandanam, U.S. Biswal, P. Dinakar // Journal of Hazardous, Toxic, and Radioactive Waste. – 2021. – Vol. 25, № 2. – P. 04021002. DOI: https://doi.org/10.1061/(ASCE)HZ.2153-5515.0000595.Recovery of metals and other beneficial products from coal fly ash: A sustainable approach for fly ash management / P.K. Sahoo et al // International Journal of Coal Science & Technology. – 2016. – Vol. 3, № 3. – P. 267-283. DOI: https://doi.org/10.1007/s40789-016-0141-2.Kursun Unver I. Distribution of trace elements in coal and coal fly ash and their recovery with mineral processing practices: A review / I. Kursun Unver, M. Terzi // Journal of Mining and Environment. – 2018. – Vol. 9, № 3. – P. 641-655.Nandanam K. Effect of fly ash, GGBS, and metakaolin on mechanical and durability properties of self-compacting concrete made with 100% coarse recycled aggregate / K. Nandanam, U.S. Biswal, P. Dinakar // Journal of Hazardous, Toxic, and Radioactive Waste. – 2021. – Vol. 25, № 2. – P. 04021002. DOI: https://doi.org/10.1061/(ASCE)HZ.2153-5515.0000595.Recent advances in the intensification of triboelectric separation and its application in resource recovery: A review / J. He et al // Chemical Engineering and Processing-Process Intensification. – 2023. – P. 109308. DOI: https://doi.org/10.1016/j.cep.2023.109308.Kursun Unver I. Distribution of trace elements in coal and coal fly ash and their recovery with mineral processing practices: A review / I. Kursun Unver, M. Terzi // Journal of Mining and Environment. – 2018. – Vol. 9, № 3. – P. 641-655.Analysis of protein enrichment during single-and multi-stage tribo-electrostatic bioseparation processes for dry fractionation of legume flour / S. Tabtabaei // Separation and Purification Technology. – 2017. – Vol. 176. – P. 48-58. DOI: https://doi.org/10.1016/j.seppur.2016.11.050.Recent advances in the intensification of triboelectric separation and its application in resource recovery: A review / J. He et al // Chemical Engineering and Processing-Process Intensification. – 2023. – P. 109308. DOI: https://doi.org/10.1016/j.cep.2023.109308.Fotovat F. Electrostatics in gas-solid fluidized beds: A review / F. Fotovat, X.T. Bi, J.R. Grace // Chemical Engineering Science. – 2017. – Vol. 173. – P. 303-334. DOI: https://doi.org/10.1016/j.ces.2017.08.001.Analysis of protein enrichment during single-and multi-stage tribo-electrostatic bioseparation processes for dry fractionation of legume flour / S. Tabtabaei // Separation and Purification Technology. – 2017. – Vol. 176. – P. 48-58. DOI: https://doi.org/10.1016/j.seppur.2016.11.050.Afshar-Mohajer N. Electrostatic collection of tribocharged lunar dust simulants / N. Afshar-Mohajer, C.Y. Wu, Sorloaica-Hickman N. // Advanced Powder Technology. – 2014. – Vol. 25, № 6. – P. 1800-1807. DOI: https://doi.org/10.1016/j.apt.2014.07.010.Fotovat F. Electrostatics in gas-solid fluidized beds: A review / F. Fotovat, X.T. Bi, J.R. Grace // Chemical Engineering Science. – 2017. – Vol. 173. – P. 303-334. DOI: https://doi.org/10.1016/j.ces.2017.08.001.Review on occurrence, speciation, transition and fate of sulfur in typical ultra-low emission coalfired power plants / Z. Zhou et al // Journal of the Energy Institute. – 2022. – Vol. 100. – P. 259-276. DOI: https://doi.org/10.1016/j.joei.2021.12.004.Afshar-Mohajer N. Electrostatic collection of tribocharged lunar dust simulants / N. AfsharMohajer, C.Y. Wu, Sorloaica-Hickman N. // Advanced Powder Technology. – 2014. – Vol. 25, № 6. – P. 1800-1807. DOI: https://doi.org/10.1016/j.apt.2014.07.010.Separation of unburned carbon from coal fly ash: A review / Y. Xing et al // Powder Technology. –2019. – Vol. 353. – P. 372-384. DOI: https://doi.org/10.1016/j.powtec.2019.05.037.Review on occurrence, speciation, transition and fate of sulfur in typical ultra-low emission coalfired power plants / Z. Zhou et al // Journal of the Energy Institute. – 2022. – Vol. 100. – P. 259-276. DOI: https://doi.org/10.1016/j.joei.2021.12.004.Investigation on the effects of fluid intensification based preconditioning process on the decarburization enhancement of fly ash / D. Li et al // Chinese Journal of Chemical Engineering. – 2022. – Vol. 44. – P.275-283. DOI: https://doi.org/10.1016/j.cjche.2021.03.001.Separation of unburned carbon from coal fly ash: A review / Y. Xing et al // Powder Technology. –2019. – Vol. 353. – P. 372-384. DOI: https://doi.org/10.1016/j.powtec.2019.05.037.Recent advances and conceptualizations in process intensification of coal gasification fine slag flotation / Z. Xue et al // Separation and Purification Technology. – 2022. – P. 22394. DOI: https://doi.org/10.1016/j.seppur.2022.122394.Investigation on the effects of fluid intensification based preconditioning process on the decarburization enhancement of fly ash / D. Li et al // Chinese Journal of Chemical Engineering. – 2022. – Vol. 44. – P.275-283. DOI: https://doi.org/10.1016/j.cjche.2021.03.001.Mallampati S.R. Hybrid selective surface hydrophilization and froth flotation separation of hazardous chlorinated plastics from E-waste with novel nanoscale metallic calcium composite / S.R. Mallampati, J.H. Heo, M.H. Park // Journal of hazardous materials. – 2016. – Vol. 306. – P. 13-23. DOI: https://doi.org/10.1016/j.jhazmat.2015.11.054.Recent advances and conceptualizations in process intensification of coal gasification fine slag flotation / Z. Xue et al // Separation and Purification Technology. – 2022. – P. 22394. DOI: https://doi.org/10.1016/j.seppur.2022.122394.Zhang L., Yang F., Tao Y. Removal of unburned carbon from fly ash using enhanced gravity separation and the comparison with froth flotation / L. Zhang, F. Yang, Y. Tao // Fuel. – 2020. – Vol. 259. – P. 116282. DOI: https://doi.org/10.1016/j.fuel.2019.116282.Mallampati S.R. Hybrid selective surface hydrophilization and froth flotation separation of hazardous chlorinated plastics from E-waste with novel nanoscale metallic calcium composite / S.R. Mallampati, J.H. Heo, M.H. Park // Journal of hazardous materials. – 2016. – Vol. 306. – P. 13-23. DOI: https://doi.org/10.1016/j.jhazmat.2015.11.054.Noble A. A review of state-of-the-art processing operations in coal preparation / A. Noble, G.H. Luttrell // International Journal of Mining Science and Technology. – 2015. – Vol. 25, № 4. – P. 511-521. DOI: https://doi.org/10.1016/j.ijmst.2015.05.001.Zhang L., Yang F., Tao Y. Removal of unburned carbon from fly ash using enhanced gravity separation and the comparison with froth flotation / L. Zhang, F. Yang, Y. Tao // Fuel. – 2020. – Vol. 259. – P. 116282. DOI: https://doi.org/10.1016/j.fuel.2019.116282.Developments in characterization and mineral processing of coal Fly ash for recovery of rare earth elements / T. Sreenivas et al // In Clean Coal Technologies: Beneficiation, Utilization, Transport Phenomena and Prospective. – 2021. – P. 431-471. DOI: https://doi.org/10.1007/978-3-030-68502-7_17.Noble A. A review of state-of-the-art processing operations in coal preparation / A. Noble, G.H. Luttrell // International Journal of Mining Science and Technology. – 2015. – Vol. 25, № 4. – P. 511-521. DOI: https://doi.org/10.1016/j.ijmst.2015.05.001.Recovery of rare earth elements from coal fly ash through sequential chemical roasting, water leaching, and acid leaching processes / J. Pan et al // Journal of Cleaner Production. – 2021. – Vol. 284. – P.124725. DOI: https://doi.org/10.1016/j.jclepro.2020.124725.Developments in characterization and mineral processing of coal Fly ash for recovery of rare earth elements / T. Sreenivas et al // In Clean Coal Technologies: Beneficiation, Utilization, Transport Phenomena and Prospective. – 2021. – P. 431-471. DOI: https://doi.org/10.1007/978-3-030-68502-7_17.Recovery of rare earth elements from coal fly ash by integrated physical separation and acid leaching / J. Pan et al // Chemosphere. – 2020. – Vol. 248. – P. 126112. DOI: https://doi.org/10.1016/j.chemosphere.2020.126112.Recovery of rare earth elements from coal fly ash through sequential chemical roasting, water leaching, and acid leaching processes / J. Pan et al // Journal of Cleaner Production. – 2021. – Vol. 284. – P.124725. DOI: https://doi.org/10.1016/j.jclepro.2020.124725.Coal fly ash derived silica nanomaterial for MMMs-application in CO2/CH4 separation / M.G. Miricioiu et al // Membranes. – 2021. – Vol. 11, № 2. – P. 78. DOI: https://doi.org/10.3390/membranes11020078.Recovery of rare earth elements from coal fly ash by integrated physical separation and acid leaching / J. Pan et al // Chemosphere. – 2020. – Vol. 248. – P. 126112. DOI: https://doi.org/10.1016/j.chemosphere.2020.126112.Arroyo F. Hydrometallurgical recovery of germanium from coal gasification fly ash. Solvent extraction method / F. Arroyo, C. Fernandez-Pereira // Industrial & Engineering Chemistry Research. – 2008. – P. 47, № 9. – P. 3186-3191. DOI: https://doi.org/10.1021/ie7016948.Coal fly ash derived silica nanomaterial for MMMs-application in CO2/CH4 separation / M.G. Miricioiu et al // Membranes. – 2021. – Vol. 11, № 2. – P. 78. DOI: https://doi.org/10.3390/membranes11020078.Selective recovery of rare earth elements from coal fly ash leachates using liquid membrane processes / R.C. Smith et al // Environmental science & technology. – 2019. – Vol. 53, № 8. – P. 4490-4499. DOI: https://doi.org/10.1021/acs.est.9b00539.Arroyo F. Hydrometallurgical recovery of germanium from coal gasification fly ash. Solvent extraction method / F. Arroyo, C. Fernandez-Pereira // Industrial & Engineering Chemistry Research. – 2008. – P. 47, № 9. – P. 3186-3191. DOI: https://doi.org/10.1021/ie7016948.Zhu Y. Supercritical carbon dioxide/nitrogen/air extraction with multistage stripping enables selective recovery of rare earth elements from coal fly ashes / Y. Zhu, G. Wang, Y.S. Jun // RSC Sustainability. – 2023. – Vol. 1, № 2. – P. 251-260. DOI: https://doi.org/10.1039/D2SU00033D.Selective recovery of rare earth elements from coal fly ash leachates using liquid membrane processes / R.C. Smith et al // Environmental science & technology. – 2019. – Vol. 53, № 8. – P. 4490-4499. DOI: https://doi.org/10.1021/acs.est.9b00539.Zhang W. Studies on carbon flotation from fly ash / W. Zhang, R. Honaker // Fuel processing technology. – 2015. – Vol. 139. – P. 236-241. DOI: https://doi.org/10.1016/j.fuproc.2015.06.045.Zhu Y. Supercritical carbon dioxide/nitrogen/air extraction with multistage stripping enables selective recovery of rare earth elements from coal fly ashes / Y. Zhu, G. Wang, Y.S. Jun // RSC Sustainability. – 2023. – Vol. 1, № 2. – P. 251-260. DOI: https://doi.org/10.1039/D2SU00033D.Possibilities of graphitization of unburned carbon from coal fly ash / Z. Adamczyk et al // Minerals. – 2021. – Vol. 11, № 9. – P. 1027. DOI: https://doi.org/10.3390/min11091027.Zhang W. Studies on carbon flotation from fly ash / W. Zhang, R. Honaker // Fuel processing technology. – 2015. – Vol. 139. – P. 236-241. DOI: https://doi.org/10.1016/j.fuproc.2015.06.045.Mofa N.N. Self-propagating high-temperature synthesis of ceramic materials from mechanically activated materials / N.N. Mofa, T.A. Ketegenov, G.P. Metaksa // Chemical Physics Reports. – 1997. – Vol. 16, № 5. – P. 903-910.Possibilities of graphitization of unburned carbon from coal fly ash / Z. Adamczyk et al // Minerals. – 2021. – Vol. 11, № 9. – P. 1027. DOI: https://doi.org/10.3390/min11091027.Extending supplementary cementitious material resources: Reclaimed and remediated fly ash and natural pozzolans / I. Diaz-Loya et al // Cement and concrete composites. – 2019. – Vol. 101. – P. 44-51. DOI: https://doi.org/10.1016/j.cemconcomp.2017.06.011.Mofa N.N. Self-propagating high-temperature synthesis of ceramic materials from mechanically activated materials / N.N. Mofa, T.A. Ketegenov, G.P. Metaksa // Chemical Physics Reports. – 1997. – Vol. 16, № 5. – P. 903-910.Federico L.M. Waste glass as a supplementary cementitious material in concrete–critical review of treatment methods / L.M. Federico, S.E. Chidiac // Cement and concrete composites. – 2009. – Vol. 31, № 8. – P. 606-610. DOI: https://doi.org/10.1016/j.cemconcomp.2009.02.001.Extending supplementary cementitious material resources: Reclaimed and remediated fly ash and natural pozzolans / I. Diaz-Loya et al // Cement and concrete composites. – 2019. – Vol. 101. – P. 44-51. DOI: https://doi.org/10.1016/j.cemconcomp.2017.06.011.Characterization of sugarcane bagasse ash as a potential supplementary cementitious material: Comparison with coal combustion fly ash / P. Zhang et al // Journal of Cleaner Production. – 2020. – Vol. 277. – P. 123834. DOI: https://doi.org/10.1016/j.jclepro.2020.123834.Federico L.M. Waste glass as a supplementary cementitious material in concrete–critical review of treatment methods / L.M. Federico, S.E. Chidiac // Cement and concrete composites. – 2009. – Vol. 31, № 8. – P. 606-610. DOI: https://doi.org/10.1016/j.cemconcomp.2009.02.001.Fly ash-based geopolymer: clean production, properties and applications / X.Y. Zhuang et al // Journal of Cleaner Production. – 2016. – Vol. 125. – P. 253-267. DOI: https://doi.org/10.1016/j.jclepro.2016.03.019.Characterization of sugarcane bagasse ash as a potential supplementary cementitious material: Comparison with coal combustion fly ash / P. Zhang et al // Journal of Cleaner Production. – 2020. – Vol. 277. – P. 123834. DOI: https://doi.org/10.1016/j.jclepro.2020.123834.Toniolo N. Fly ash-based geopolymers containing added silicate waste. A review / N. Toniolo, A.R. Boccaccini // Ceramics International. – 2016. – Vol. 43, № 17. – P. 14545-14551. DOI: https://doi.org/10.1016/j.ceramint.2017.07.221.Fly ash-based geopolymer: clean production, properties and applications / X.Y. Zhuang et al // Journal of Cleaner Production. – 2016. – Vol. 125. – P. 253-267. DOI: https://doi.org/10.1016/j.jclepro.2016.03.019.ul Haq E. Synthesis and characteristics of fly ash and bottom ash based geopolymers – A comparative study / E. ul Haq, S.K. Padmanabhan, A. Licciulli // Ceramics International. – 2014. – Vol. 40, № 2. – P. 2965-2971. DOI: https://doi.org/10.1016/j.ceramint.2013.10.012.Toniolo N. Fly ash-based geopolymers containing added silicate waste. A review / N. Toniolo, A.R. Boccaccini // Ceramics International. – 2016. – Vol. 43, № 17. – P. 14545-14551. DOI: https://doi.org/10.1016/j.ceramint.2017.07.221.Fly ash-based geopolymers: The relationship between composition, pore structure and efflorescence / Z. Zhang et al // Cement and concrete research. – 2014. – Vol. 64. – P. 30-41. DOI: https://doi.org/10.1016/j.cemconres.2014.06.004.ul Haq E. Synthesis and characteristics of fly ash and bottom ash based geopolymers – A comparative study / E. ul Haq, S.K. Padmanabhan, A. Licciulli // Ceramics International. – 2014. – Vol. 40, № 2. – P. 2965-2971. DOI: https://doi.org/10.1016/j.ceramint.2013.10.012.Ahmaruzzaman M. A review on the utilization of fly ash / M. Ahmaruzzaman // Progress in energy and combustion science. – 2010. – Vol. 36, № 3. – P. 327-363. DOI: https://doi.org/10.1016/j.pecs.2009.11.003.Fly ash-based geopolymers: The relationship between composition, pore structure and efflorescence / Z. Zhang et al // Cement and concrete research. – 2014. – Vol. 64. – P. 30-41. DOI: https://doi.org/10.1016/j.cemconres.2014.06.004.Optimization of fly ash based soil stabilization using secondary admixtures for sustainable road construction / R. Renjith et al // Journal of Cleaner Production. – 2021. – Vol. 294. – P. 126264. DOI: https://doi.org/10.1016/j.jclepro.2021.126264.Ahmaruzzaman M. A review on the utilization of fly ash / M. Ahmaruzzaman // Progress in energy and combustion science. – 2010. – Vol. 36, № 3. – P. 327-363. DOI: https://doi.org/10.1016/j.pecs.2009.11.003.Coal fly ash: an emerging material for water remediation / N.B. Singh et al // International Journal of Coal Science & Technology. – 2022. – Vol. 9, № 1. – P. 44. DOI: https://doi.org/10.1007/s40789-022-00512-1.Optimization of fly ash based soil stabilization using secondary admixtures for sustainable road construction / R. Renjith et al // Journal of Cleaner Production. – 2021. – Vol. 294. – P. 126264. DOI: https://doi.org/10.1016/j.jclepro.2021.126264.Potential fly-ash utilization in agriculture: a global review / M. Basu et al // Progress in Natural Science. – 2009. – Vol. 19, № 10. – P. 1173-1186. DOI: https://doi.org/10.1016/j.pnsc.2008.12.006.Coal fly ash: an emerging material for water remediation / N.B. Singh et al // International Journal of Coal Science & Technology. – 2022. – Vol. 9, № 1. – P. 44. DOI: https://doi.org/10.1007/s40789-022-00512-1.Sulfur dioxide removal: An overview of regenerative flue gas desulfurization and factors affecting desulfurization capacity and sorbent regeneration / M.A. Hanif et al // Environmental Science and Pollution Research. – 2020. – Vol. 27. – P. 27515-27540. DOI: https://doi.org/10.1007/s11356-020-09191-4.Potential fly-ash utilization in agriculture: a global review / M. Basu et al // Progress in Natural Science. – 2009. – Vol. 19, № 10. – P. 1173-1186. DOI: https://doi.org/10.1016/j.pnsc.2008.12.006.Properties of fly ash from forest biomass combustion / R.P. Girón et al // Fuel. – 2013. – Vol. 114. – P. 71-77. DOI: https://doi.org/10.1016/j.fuel.2012.04.042.Sulfur dioxide removal: An overview of regenerative flue gas desulfurization and factors affecting desulfurization capacity and sorbent regeneration / M.A. Hanif et al // Environmental Science and Pollution Research. – 2020. – Vol. 27. – P. 27515-27540. DOI: https://doi.org/10.1007/s11356-020-09191-4.Properties of fly ash from forest biomass combustion / R.P. Girón et al // Fuel. – 2013. – Vol. 114. – P. 71-77. DOI: https://doi.org/10.1016/j.fuel.2012.04.042.Properties of fly ash from forest biomass combustion / R.P. Girón et al // Fuel. – 2013. – Vol. 114. – P. 71-77. DOI: https://doi.org/10.1016/j.fuel.2012.04.042.

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