INVESTIGATION OF QUALITY INDICATORS OF TWO-LAYER FERTILIZERS WITH A FILLER AND A PROTECTIVE COATING
EEBQTP
DOI:
https://doi.org/10.25712/ASTU.2072-8921.2026.01.032Keywords:
Nitrogen-containing fertilizers, filler, phosphogypsum, protective coating, static strength, prolonged effect.Abstract
The article presents the results of a study of the qualitative properties of two-layer granules of nitrogen-containing fertilizers. Granulated and prilled urea, as well as prilled NPK fertilizer, were used as the initial granules. The first layer included a powdered phosphogypsum filler and a lignosulfonate solution as a binder, both components being industrial waste. The second layer was a protective shell based on stearic acid. The quality of the resulting granules was assessed based on surface quality, static strength, and the rate of dissolution of the granules in distilled water (prolonged effect). The results showed that the obtained fertilizers have an acceptable surface quality (smooth and uniform coating), increased static strength (1.4-3 times greater than that of the initial granules), and a prolonged effect (complete dissolution time of 5-7 days compared to 1-2 hours for the initial granules). The use of such fertilizers will reduce the volume of granules destroyed during storage, transportation, and soil application, as well as nitrogen loss due to soil transformation, which will minimize the negative impact on the environment. Furthermore, the inclusion of unclaimed chemical industry waste in the process is consistent with the principles of sustainable development within the framework of a circular economy.
References
Шеуджен А.Х., Бондарева Т.Н., Кизинек С.В. Агрохимические основы применения удобрений. Май-коп: ОАО «ПолиграфЮГ», 2013. 571 с.
Urea application in soil: processes, losses, and alternatives – a review / A.M. Motasim [et al.] // Discov Agric. V. 2. № 42. 2024. doi.org/10.1007/s44279-024-00060-z.
Использование азотсодержащих кремнийорга-нических соединений при создании термо- и огнестой-ких компаундов для герметизации высоковольтного и высокочастотного оборудования / А.Д. Кирилин [и др.] // Тонкие химические технологии. 2024. Т. 19. № 4. С. 293-306. doi.org/10.32362/2410-6593-2024-19-4-293-309.
Vashishtha M., Dongara P., Singh D. Improve-ment in properties of urea by phosphogypsum coating // International Journal ChemTech Research. 2010. V. 2. № 1. P. 36-44.
Dubey A., Mailapalli D.R. Zeolite coated urea ferti-lizer using different binders: Fabrication, material properties and nitrogen release studies // Environmental Technology & Innovation. 2019. V. 16. P. 100452. doi.org/10.1016/j.eti. 2019.100452.
Shivay Y.S., Prasad R., Pal. M. Effect of nitrogen levels and coated urea on growth, yields and nitrogen use efficiency in aromatic rice. Journal of Plant Nutrition. 2015. V. 36. № 6. P. 875-882. doi.org/10.1080/01904167.2015. 1109102.
New coating formulation for the slow release of urea using a mixture of gypsum and dolomitic limestone / F.E. Babadi [et al.] // Particuology. 2015. V. 23. P. 62-67. doi.org/ 10.1016/j.partic.2014.12.011.
Lipin A.A., Lipin A.G. Particle coating with compo-site shell in a pan granulator // Particulate science and technology. 2021. V. 40. №1. P. 123-130. doi.org/10.1080/02726351.2021. 1927272.
Cordeiro C.M., Sindhøj E. Situating the discourse of recycled nutrient fertilizers in circular economy principles for sustainable agriculture // Front. Sustain. 2024. 5:1465752. doi:10.3389 /frsus.2024.1465752.
Горелова О.М., Титова К.Ю. Исследования по утилизации избыточного активного ила // Ползуновский вестник. 2015. Т.1. № 4. С. 114-118.
Фуфаева В.М., Таран Ю.А., Стрельникова В.О. Удобрения пролонгированного действия — новый этап развития рынка удобрений (обзор) // Химическая техно-логия. 2024. № 3. C. 86-96. doi:10.31044/1684-5811-2024-25-3-86-95.
Affendi N.M.N., Mansor N., Mathialagan R. De-velopment and characterization of allicin using palm stearin as a binder on urea granules // Journal of Plant Nutrition. 2019. V. 43. № 5. P. 621-628. doi:10.1080/01904167 .2019.1701021.
Synthesis, characterization and analysis of bio-degradable polymer-coated urea fertilizers for controlled nutrient release / B. Balashanmugavel [et al.] // Polym. Bull. 2024. V. 81. P. 15533-15549. doi.org/10.1007/s00289-024-05431-6.
Influence of biodegradable polymer coated urea on nitrogen uptake and utilization of maize (Zea mays L) / B. Balaganesh, [et al.] // International Journal of Plant & Soil Science. 2021. V. 33. № 24. P. 297-306. doi:10.9734/IJPSS/2021/v33i2430781.
Decomposition of lipids in soils: Free and esteri-fied fatty acids, alcohols and ketones / J. Moucawi [et al.] // Soil Biology and Biochemistry. 1981. V. 13. № 6. P. 461-468. doi.org/10.1016/0038-0717(81)90035-3.
Ibrahim K. R. M., Babadi F. E., Yunus R. Compar-ative performance of different urea coating materials for slow release // Particuology. 2014. V. 17. P. 165-172. doi:10.1016/ j.patic.2014.03.009.
Стрельникова В.О., Таран Ю.А. Получение но-вого удобрения на основе карбамида с использованием фосфогипса в качестве наполнителя // Химическая промышленность сегодня. 2023. № 5. С. 29-37. doi: 10.53884/27132854_2023_5_29.
Соколовский А.А., Яшке Е.В. Технология ми-неральных удобрений и кислот / А.А. Соколовский. Москва: Химия, 1971. 456 с.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2026 Victoria O. Strelnikova, Yulia A. Taran, Valentina M. Fufaeva
This work is licensed under a Creative Commons Attribution 4.0 International License.
.
This work is licensed under a 
