agronaukaАграрная наука Евро-Северо-ВостокаAgricultural Science Euro-North-East2072-90812500-1396FARC North-East10.30766/2072-9081.2023.24.1.30-45agronauka-1244Research ArticleОБЗОРНЫЕ СТАТЬИREVIEWВлияние различных параметров на процесс гранулирования растительного сырья и качество гранул (обзор)Influence of various parameters on the vegetable raw material pelleting process and pellets quality (review)https://orcid.org/0000-0001-7137-5692БрагинецС. В.BraginetsS. V.

Брагинец Сергей Валерьевич, доктор техн. наук, ведущий научный сотрудник отдела переработки продукции растениеводства; доцент кафедры «Проектирование и технический сервис транспортно-технологических систем»

ул. Ленина 14, г. Зерноград, Ростовская область, 347740

пл. Гагарина, д. 1, г. Ростов-на-Дону, 344010

Sergey V. Braginets, DSc in Engineering, leading researcher, the Department of Plant Products Processing

14 Lenin St., Zernograd, Rostov Region, 347740

1 Gagarin Sq., Rostov-on-Don, 344010

spu-24@donstu.ruhttps://orcid.org/0000-0002-3362-5627БахчевниковО. Н.BakhchevnikovO. N.

Бахчевников Олег Николаевич, кандидат техн. наук, старший научный сотрудник отдела переработки продукции растениеводства

ул. Ленина 14, г. Зерноград, Ростовская область, 347740

Oleg N. Bakhchevnikov, PhD in Engineering, senior researcher, the Department of Plant Products Processing

14 Lenin St., Zernograd, Rostov Region, 347740

vniizk30@mail.ruhttps://orcid.org/0000-0002-4160-0382ДеевК. А.DeevK. A.

Деев Константин Александрович, инженер отдела переработки продукции растениеводства

ул. Ленина 14, г. Зерноград, Ростовская область, 347740

Konstantin A. Deev, engineer, the Department of Plant Products Processing

14 Lenin St., Zernograd, Rostov Region, 347740

vniizk30@mail.ruФГБНУ «Аграрный научный центр «Донской»; ФГБОУ ВО «Донской государственный технический университет»РоссияAgricultural Research Centre Donskoy; Don State Technical UniversityRussian FederationФГБНУ «Аграрный научный центр «Донской»РоссияAgricultural Research Centre DonskoyRussian Federation2023220220232413045Copyright © Брагинец С.В., Бахчевников О.Н., Деев К.А., 20232023Брагинец С.В., Бахчевников О.Н., Деев К.А.Braginets S.V., Bakhchevnikov O.N., Deev K.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.agronauka-sv.ru/jour/article/view/1244

Актуальным является установление закономерностей процесса гранулирования растительного сырья для совершенствования технологий и технических средств с целью снижения энергоемкости и улучшения качества гранул. Целью исследования является обобщение результатов исследований, посвященных влиянию различных параметров на процесс гранулирования растительного сырья и качество кормовых и биотопливных гранул. Выполнен отбор и систематический обзор научной литературы по тематике исследования за период 2007-2022 гг. Анализ показал, что предварительная тепловая обработка и увлажнение растительного сырья, а также его состав и размеры частиц являются факторами, оказывающими наибольшее влияние на качество кормовых  и биотопливных гранул. Повышение давления в диапазоне 20-200 МПа приводит к увеличению прочности гранул, а температура матрицы около 100 °C является оптимальной для получения плотных качественных гранул из растительного сырья. Важную роль в получении качественных гранул при обработке растительного сырья играют конструктивные параметры пресс-гранулятора. Исполнение входной части фильеры матрицы в форме сужающегося конуса способствует снижению энергоемкости и давления гранулирования, а увеличение отношения длины канала фильеры к его диаметру экспоненциально увеличивает давление гранулирования и его энергоемкость. Взаимодействие между физическими процессами, происходящими в пресс-грануляторе, усложняет интерпретацию влияния каждого параметра на процесс гранулирования, вследствие этого авторы по-разному оценивают вклад отдельных факторов в получение качественных гранул. Поэтому необходимо восполнить пробел в знаниях о взаимодействии между отдельными параметрами гранулирования и их влиянии на результаты процесса.

Determining the regularities of the process of pelleting vegetable raw materials is relevant for the improvement of technologies and technical equipment in order to reduce energy intensity and improve the quality of pellets. The generalization of the results of the research aimed at studying the influence of various parameters on the process of pelleting vegetable raw materials and the quality of feed and biofuel pellets is the purpose of the research. A selection and systematic review of the scientific literature on the subject of the study for the period of 2007-2022 has been carried out. The analysis has proved that heat pre-treatment and moistening of vegetable raw materials, as well as their composition and particle size are the factors that have the greatest impact on the quality of feed and biofuel pellets. Increasing the pressure in the range of 20...200 MPa results in increasing the pellets durability. A die temperature of around 100°C is optimum for obtaining dense pellets of highquality from vegetable raw materials. The design parameters of the pelletizer play an important role in obtaining high-quality pellets when processing vegetable raw materials. The design of the inlet in the form of a tapering cone helps to reduce energy consumption and pelleting pressure. An increase in the ratio of the die channel length to its diameter exponentially increases the pelleting pressure and its energy intensity. The interplay between the physical processes occurring in the pelletizer makes it difficult to interpret the impact of each parameter on the pelleting process, so different authors have different assessments of the contribution of individual factors in producing high-quality pellets. Therefore, the interaction between the individual pelleting parameters and their influence on the results of the process should be examined more precisely. 

кормабиотопливопресс-грануляторфильера матрицыплотность гранулпрочность гранулэнергоемкость гранулированияfeedsbiofuelpelletizerdiepellet densitypellet durabilitypelleting energy intensityработа выполнена при поддержке Минобрнауки РФ в рамках Государственного задания ФГБНУ «АНЦ «Донской» (тема № 0505-2022-0007). Авторы благодарят рецензентов за их вклад в экспертную оценку этой работы.the research was carried out under the support of the Ministry of Science and Higher Education of the Russian Federation within the state assignment of the Agricultural Research Centre Donskoy (theme No. 0505-2022-0007). The authors thank the reviewers for their contribution to the peer review of this work.ReferencesBlagov D. A., Gizatov A. Y., Smakuyev D. R., Kosilov V. I., Pogodaev V. A., Tamaev S. A. Overview of feed granulation technology and technical means for its implementation. IOP Conference Series: Earth and Environmental Science. 2020;613(1):012018. DOI: https://doi.org/10.1088/1755-1315/613/1/012018Blagov D. A., Gizatov A. Y., Smakuyev D. R., Kosilov V. I., Pogodaev V. A., Tamaev S. A. Overview of feed granulation technology and technical means for its implementation. IOP Conference Series: Earth and Environmental Science. 2020;613(1):012018. DOI: https://doi.org/10.1088/1755-1315/613/1/012018Regupathi E. R., Suriya A., Geethapriya R. S. On studying different types of pelletizing system for fish feed. International Journal of Fishiries and Aquatic Studies. 2019;7(2):187-192. URL: https://www.fisheriesjournal.com/archives/2019/vol7issue2/PartC/7-2-4-857.pdfRegupathi E. R., Suriya A., Geethapriya R. S. On studying different types of pelletizing system for fish feed. International Journal of Fishiries and Aquatic Studies. 2019;7(2):187-192. URL: https://www.fisheriesjournal.com/archives/2019/vol7issue2/PartC/7-2-4-857.pdfKumaraguru Vasagam K. P., Ambasankar K., Dayal J. S. An overview of aquafeed formulation and processing. In: Perumal S., Thirunavukkarasu A. R., Pachiappan P. (eds) Advances in Marine and Brackishwater Aquaculture. Springer, New Delhi, 2015. pp. 227-240. DOI: https://doi.org/10.1007/978-81-322-2271-2_21Kumaraguru Vasagam K. P., Ambasankar K., Dayal J. S. An overview of aquafeed formulation and processing. In: Perumal S., Thirunavukkarasu A. R., Pachiappan P. (eds) Advances in Marine and Brackishwater Aquaculture. Springer, New Delhi, 2015. pp. 227-240. DOI: https://doi.org/10.1007/978-81-322-2271-2_21Muramatsu K., Massuquetto A., Dahlke F., Maiorka A. Factors that affect pellet quality: a review. Journal of Agricultural Science and Technology. 2015;9(2):717-722. DOI: https://doi.org/10.17265/2161-6256/2015.09.002Muramatsu K., Massuquetto A., Dahlke F., Maiorka A. Factors that affect pellet quality: a review. Journal of Agricultural Science and Technology. 2015;9(2):717-722. DOI: https://doi.org/10.17265/2161-6256/2015.09.002Nielsen S. K., Mando M., Rosenorn A. B. Review of die design and process parameters in the biomass pelleting process. Powder Technology. 2020;364: 971-985. DOI: https://doi.org/10.1016/j.powtec.2019.10.051Nielsen S. K., Mando M., Rosenorn A. B. Review of die design and process parameters in the biomass pelleting process. Powder Technology. 2020;364: 971-985. DOI: https://doi.org/10.1016/j.powtec.2019.10.051Gageanu I., Cujbescu D., Persu C., Tudor P., Cardei P., Matache M., Vladut V., Biris S., Voicea I., Ungureanu N. Influence of input and control parameters on the process of pelleting powdered biomass. Energies. 2021;14(14):4104. DOI: https://doi.org/10.3390/en14144104Gageanu I., Cujbescu D., Persu C., Tudor P., Cardei P., Matache M., Vladut V., Biris S., Voicea I., Ungureanu N. Influence of input and control parameters on the process of pelleting powdered biomass. Energies. 2021;14(14):4104. DOI: https://doi.org/10.3390/en14144104Ольховик П. А., Шахов В. А., Хлопко Ю. А., Козловцев А. П., Межуева Л. В., Шахов В. В., Шахов Г. В. Основные тенденции совершенствования пресс-грануляторов. Известия Оренбургского государственного аграрного университета. 2022;94(2):102-106. DOI: https://doi.org/10.37670/2073-0853-2022-94-2-102-106Olkhovik P. A., Shakhov V. A., Khlopko Yu. A., Kozlovtsev A. P., Mezhueva L. V., Shakhov V. V., Shakhov G. V. The main trends in the improvement of press granulators. Izvestiya Orenburgskogo gosudarstvennogo agrarnogo universiteta = Izvestia Orenburg State Agrarian University. 2022;94(2):102-106. (In Russ.). DOI: https://doi.org/10.37670/2073-0853-2022-94-2-102-106Thomas M., Van der Poel A. F. B. Fundamental factors in feed manufacturing: Towards a unifying conditioning/pelleting framework. Animal Feed Science and Technology. 2020;268:114612. DOI: https://doi.org/10.1016/j.anifeedsci.2020.114612Thomas M., Van der Poel A. F. B. Fundamental factors in feed manufacturing: Towards a unifying conditioning/pelleting framework. Animal Feed Science and Technology. 2020;268:114612. DOI: https://doi.org/10.1016/j.anifeedsci.2020.114612Dujmovic M., Safran B., Jug M., Radmanovic K., Antonovic A. Biomass Pelletizing Process: A Review. Drvna Industrija. 2022;73(1):99-106. DOI: https://doi.org/10.5552/drvind.2022.2139Dujmovic M., Safran B., Jug M., Radmanovic K., Antonovic A. Biomass Pelletizing Process: A Review. Drvna Industrija. 2022;73(1):99-106. DOI: https://doi.org/10.5552/drvind.2022.2139Torraco R. J. Writing integrative literature reviews: Using the past and present to explore the future. Human Resource Development Review. 2016;15(4):404-428. DOI: https://doi.org/10.1177/1534484316671606Torraco R. J. Writing integrative literature reviews: Using the past and present to explore the future. Human Resource Development Review. 2016;15(4):404-428. DOI: https://doi.org/10.1177/1534484316671606Okoli C. A guide to conducting a standalone systematic literature review. Communications of the Association for Information Systems. 2015;37:879-910. DOI: https://doi.org/10.17705/1cais.03743Okoli C. A guide to conducting a standalone systematic literature review. Communications of the Association for Information Systems. 2015;37:879-910. DOI: https://doi.org/10.17705/1cais.03743Stelte W., Sanadi A. R., Shang L., Holm J. K., Ahrenfeldt J., Henriksen U. B. Recent developments in biomass pelletization – A review. BioResources. 2012;7(3):4451-4490. URL: https://orbit.dtu.dk/files/10266572/Recent_Development_Biomass_Pelletization_Review.pdfStelte W., Sanadi A. R., Shang L., Holm J. K., Ahrenfeldt J., Henriksen U. B. Recent developments in biomass pelletization – A review. BioResources. 2012;7(3):4451-4490. URL: https://orbit.dtu.dk/files/10266572/Recent_Development_Biomass_Pelletization_Review.pdfHarun N. Y., Afzal M. Effect on particle size on mechanical properties of pellets made from biomass. Procedia Engineering. 2016;148:93-99. DOI: https://doi.org/10.1016/j.proeng.2016.06.445Harun N. Y., Afzal M. Effect on particle size on mechanical properties of pellets made from biomass. Procedia Engineering. 2016;148:93-99. DOI: https://doi.org/10.1016/j.proeng.2016.06.445Stelte W., Holm J. K., Sanadi A. R., Barsberg S., Ahrenfeldt J., Henriksen U. B. Fuel pellets from biomass: the importance of the pelletizing pressure and its dependency on the processing conditions. Fuel. 2011;90(11):3285-3290. DOI: https://doi.org/10.1016/j.fuel.2011.05.011Stelte W., Holm J. K., Sanadi A. R., Barsberg S., Ahrenfeldt J., Henriksen U. B. Fuel pellets from biomass: the importance of the pelletizing pressure and its dependency on the processing conditions. Fuel. 2011;90(11):3285-3290. DOI: https://doi.org/10.1016/j.fuel.2011.05.011Lyu F., Thomas M., Hendriks W. H., Van der Poel A. F. B. Size reduction in feed technology and methods for determining, expressing and predicting particle size: A review. Animal Feed Science and Technology. 2020;261:114347. DOI: https://doi.org/10.1016/j.anifeedsci.2019.114347Lyu F., Thomas M., Hendriks W. H., Van der Poel A. F. B. Size reduction in feed technology and methods for determining, expressing and predicting particle size: A review. Animal Feed Science and Technology. 2020;261:114347. DOI: https://doi.org/10.1016/j.anifeedsci.2019.114347Рюле М. Как изменяется размер частиц при гранулировании. Комбикорма. 2020;(6):34-36. Режим доступа: https://kombi-korma.ru/sites/default/files/2/06_20/2020_06_34-36.pdfРюле М. Как изменяется размер частиц при гранулировании. Комбикорма. 2020;(6):34-36. Режим доступа: https://kombi-korma.ru/sites/default/files/2/06_20/2020_06_34-36.pdf EDN: CCZYPO Ryule M. How particle size changes during pelleting. Kombikorma. 2020;(6):34-36. (In Russ.). URL: https://kombi-korma.ru/sites/default/files/2/06_20/2020_06_34-36.pdfLisowski A., Matkowski P., Dąbrowska M., Piątek M., Świętochowski A., Klonowski J., Mieszkalski L., Reshetiuk V. Particle size distribution and physicochemical properties of pellets made of straw, hay, and their blends. Waste and Biomass Valorization. 2020;11:63-75. DOI: https://doi.org/10.1007/s12649-018-0458-8Lisowski A., Matkowski P., Dąbrowska M., Piątek M., Świętochowski A., Klonowski J., Mieszkalski L., Reshetiuk V. Particle size distribution and physicochemical properties of pellets made of straw, hay, and their blends. Waste and Biomass Valorization. 2020;11:63-75. DOI: https://doi.org/10.1007/s12649-018-0458-8Bergström D., Israelsson S., Ohman M., Dahlqvist S. A., Gref R., Boman C., Wasterlund I. Effects of raw material particle size distribution on the characteristics of Scots pine sawdust fuel pellets. Fuel Processing Technology. 2008;89(12):1324-1329. DOI: https://doi.org/10.1016/j.fuproc.2008.06.001Bergström D., Israelsson S., Ohman M., Dahlqvist S. A., Gref R., Boman C., Wasterlund I. Effects of raw material particle size distribution on the characteristics of Scots pine sawdust fuel pellets. Fuel Processing Technology. 2008;89(12):1324-1329. DOI: https://doi.org/10.1016/j.fuproc.2008.06.001Mani S., Tabil L. G., Sokhansanj S. Effects of compressive force, particle size and moisture content on mechanical properties of biomass pellets from grasses. Biomass and Bioenergy. 2006;30(7):648-654. DOI: https://doi.org/10.1016/j.biombioe.2005.01.004Mani S., Tabil L. G., Sokhansanj S. Effects of compressive force, particle size and moisture content on mechanical properties of biomass pellets from grasses. Biomass and Bioenergy. 2006;30(7):648-654. DOI: https://doi.org/10.1016/j.biombioe.2005.01.004Stelte W., Holm J. K., Sanadi A. R., Barsberg S., Ahrenfeldt J., Henriksen U. B. A study of bonding and failure mechanisms in fuel pellets from different biomass resources. Biomass Bioenergy. 2011;35(2):910-918. DOI: https://doi.org/10.1016/j.biombioe.2010.11.003Stelte W., Holm J. K., Sanadi A. R., Barsberg S., Ahrenfeldt J., Henriksen U. B. A study of bonding and failure mechanisms in fuel pellets from different biomass resources. Biomass Bioenergy. 2011;35(2):910-918. DOI: https://doi.org/10.1016/j.biombioe.2010.11.003Froetschner J. Conditioning Controls Quality of Pellet. Feed Tech. 2006;10(6):12-5. URL: https://vk.cc/chaXTzFroetschner J. Conditioning Controls Quality of Pellet. Feed Tech. 2006;10(6):12-5. URL: https://vk.cc/chaXTzMoritz J. S., Cramer K. R., Wilson K. J., Beyer R. S. Feed manufacture and feeding of rations with graded levels of added moisture formulated to different energy densities. Journal Applied of Poultry Research. 2003;12(3):371-381. DOI: https://doi.org/10.1093/japr/12.3.371Moritz J. S., Cramer K. R., Wilson K. J., Beyer R. S. Feed manufacture and feeding of rations with graded levels of added moisture formulated to different energy densities. Journal Applied of Poultry Research. 2003;12(3):371-381. DOI: https://doi.org/10.1093/japr/12.3.371Abdollahi M. R., Ravindran V., Wester T. J., Ravindran G., Thomas D. V. Effect of improved pellet quality from the addition of a pellet binder and/or moisture to a wheat-based diet conditioned at two different temperatures on performance, apparent metabolisable energy and ileal digestibility of starch and nitrogen in broilers. Animal Feed Science and Technology. 2012;175(3-4);150-157. DOI: https://doi.org/10.1016/j.anifeedsci.2012.05.001Abdollahi M. R., Ravindran V., Wester T. J., Ravindran G., Thomas D. V. Effect of improved pellet quality from the addition of a pellet binder and/or moisture to a wheat-based diet conditioned at two different temperatures on performance, apparent metabolisable energy and ileal digestibility of starch and nitrogen in broilers. Animal Feed Science and Technology. 2012;175(3-4);150-157. DOI: https://doi.org/10.1016/j.anifeedsci.2012.05.001Cutlip S. E., Hott J. M., Buchanan N. P., Rack A. L., Latshaw J. D., Moritz J. S. The effect of steam-conditioning practices on pellet quality and growing broiler nutritional value. Journal Applied of Poultry Research. 2008;17(2):249-261. DOI: https://doi.org/10.3382/japr.2007-00081Cutlip S. E., Hott J. M., Buchanan N. P., Rack A. L., Latshaw J. D., Moritz J. S. The effect of steam-conditioning practices on pellet quality and growing broiler nutritional value. Journal Applied of Poultry Research. 2008;17(2):249-261. DOI: https://doi.org/10.3382/japr.2007-00081Ungureanu N., Vladut V., Voicu G., Dinca M. N., Zabava B. S. Influence of biomass moisture content on pellet properties – review. Engineering for Rural Development. 2018;17:1876-1883. DOI: https://doi.org/10.22616/ERDev2018.17.N449Ungureanu N., Vladut V., Voicu G., Dinca M. N., Zabava B. S. Influence of biomass moisture content on pellet properties – review. Engineering for Rural Development. 2018;17:1876-1883. DOI: https://doi.org/10.22616/ERDev2018.17.N449Colovic R., Vukmirovic D., Matulaitis R., Bliznikas S., Uchockis V., Juskiene V., Levic J. Effect of die channel press way length on physical quality of pelleted cattle feed. Food & Feed Research. 2010;37(1):1-6. URL: http://foodandfeed.fins.uns.ac.rs/uploads/Magazines/magazine_37/effect-of-die-channel-press-way-length-on-physicalquality-of-pelleted-cattle-feed.pdfColovic R., Vukmirovic D., Matulaitis R., Bliznikas S., Uchockis V., Juskiene V., Levic J. Effect of die channel press way length on physical quality of pelleted cattle feed. Food & Feed Research. 2010;37(1):1-6. URL: http://foodandfeed.fins.uns.ac.rs/uploads/Magazines/magazine_37/effect-of-die-channel-press-way-length-on-physicalquality-of-pelleted-cattle-feed.pdfAbadi M. H. M. G., Moravej H., Shivazad M., Torshizi M. A. K., Kim W. K. Effect of different types and levels of fat addition and pellet binders on physical pellet quality of broiler feeds. Poultry Science. 2019;98(10):4745-4754. DOI: https://doi.org/10.3382/ps/pez190Abadi M. H. M. G., Moravej H., Shivazad M., Torshizi M. A. K., Kim W. K. Effect of different types and levels of fat addition and pellet binders on physical pellet quality of broiler feeds. Poultry Science. 2019;98(10):4745-4754. DOI: https://doi.org/10.3382/ps/pez190Gehring C. K., Lilly K. G. S., Shires L. K., Beaman K. R., Loop S. A., Moritz J. S. Increasing mixer-added fat reduces the electrical energy required for pelleting and improves exogenous enzyme efficacy for broilers. Journal of Applied Poultry Research. 2011;20(1):75-89. DOI: https://doi.org/10.3382/japr.2009-00082Gehring C. K., Lilly K. G. S., Shires L. K., Beaman K. R., Loop S. A., Moritz J. S. Increasing mixer-added fat reduces the electrical energy required for pelleting and improves exogenous enzyme efficacy for broilers. Journal of Applied Poultry Research. 2011;20(1):75-89. DOI: https://doi.org/10.3382/japr.2009-00082Lamichhane S., Sahtout K., Smillie J., Scott T. A. Vacuum coating of pelleted feed for broilers: opportunities and challenges. Animal Feed Science and Technology. 2015;200:1-7. DOI: https://doi.org/10.1016/j.anifeedsci.2014.11.015Lamichhane S., Sahtout K., Smillie J., Scott T. A. Vacuum coating of pelleted feed for broilers: opportunities and challenges. Animal Feed Science and Technology. 2015;200:1-7. DOI: https://doi.org/10.1016/j.anifeedsci.2014.11.015Massuquetto A., Durau J. F., Schramm V. G., Netto M. T., Krabbe E. L., Maiorka A. Influence of feed form and conditioning time on pellet quality, performance and ileal nutrient digestibility in broilers. Journal of Applied Poultry Research. 2018;27(1);51-58. DOI: https://doi.org/10.3382/japr/pfx039Massuquetto A., Durau J. F., Schramm V. G., Netto M. T., Krabbe E. L., Maiorka A. Influence of feed form and conditioning time on pellet quality, performance and ileal nutrient digestibility in broilers. Journal of Applied Poultry Research. 2018;27(1);51-58. DOI: https://doi.org/10.3382/japr/pfx039Segerstrom M., Larsson S. H. Clarifying sub-processes in continuous ring die pelletizing through die temperature control. Fuel Processing Technology. 2014;123:122-126. DOI: https://doi.org/10.1016/j.fuproc.2014.02.008Segerstrom M., Larsson S. H. Clarifying sub-processes in continuous ring die pelletizing through die temperature control. Fuel Processing Technology. 2014;123:122-126. DOI: https://doi.org/10.1016/j.fuproc.2014.02.008Abdollahi M. R., Ravindran V., Wester T. J., Ravindran G., Thomas D. V. Influence of conditioning temperature on performance, apparent metabolisable energy, ileal digestibility of starch and nitrogen and the quality of pellets, in broiler starters fed corn and sorghum-based diets. Animal Feed Science and Technology. 2010;162(3-4):106-115. DOI: https://doi.org/10.1016/j.anifeedsci.2010.08.017Abdollahi M. R., Ravindran V., Wester T. J., Ravindran G., Thomas D. V. Influence of conditioning temperature on performance, apparent metabolisable energy, ileal digestibility of starch and nitrogen and the quality of pellets, in broiler starters fed corn and sorghum-based diets. Animal Feed Science and Technology. 2010;162(3-4):106-115. DOI: https://doi.org/10.1016/j.anifeedsci.2010.08.017Kulig R., Laskowski J. Effect of conditioning parameters on pellet temperature and energy consumption in the process of plant material pressing. Teka Komisji Motoryzacji i Energetyki Rolnictwa. 2008;8a:105-111. URL: https://www.researchgate.net/publication/237283167_EFFECT_OF_CONDITIONING_PARAMETERS_ON_PELLET_TEMPERATURE_AND_ENERGY_CONSUMPTION_IN_THE_PROCESS_OF_PLANT_MATERIAL_PRESSINGKulig R., Laskowski J. Effect of conditioning parameters on pellet temperature and energy consumption in the process of plant material pressing. Teka Komisji Motoryzacji i Energetyki Rolnictwa. 2008;8a:105-111. URL: https://www.researchgate.net/publication/237283167_EFFECT_OF_CONDITIONING_PARAMETERS_ON_PELLET_TEMPERATURE_AND_ENERGY_CONSUMPTION_IN_THE_PROCESS_OF_PLANT_MATERIAL_PRESSINGNetto M. T., Massuquetto A., Krabbe E. L., Surek D., Oliveira S. G., Maiorka A. Effect of conditioning temperature on pellet quality, diet digestibility, and broiler performance. Journal of Applied Poultry Research. 2019;28(4):963-973. DOI: https://doi.org/10.3382/japr/pfz056Netto M. T., Massuquetto A., Krabbe E. L., Surek D., Oliveira S. G., Maiorka A. Effect of conditioning temperature on pellet quality, diet digestibility, and broiler performance. Journal of Applied Poultry Research. 2019;28(4):963-973. DOI: https://doi.org/10.3382/japr/pfz056Dos Santos R. O. F., Bassi L. S., Schramm V. G., da Rocha C., Dahlke F., Krabbe E. L., Maiorka A. Effect of conditioning temperature and retention time on pellet quality, ileal digestibility, and growth performance of broiler chickens. Livestock Science. 2020;240:104110. DOI: https://doi.org/10.1016/j.livsci.2020.104110Dos Santos R. O. F., Bassi L. S., Schramm V. G., da Rocha C., Dahlke F., Krabbe E. L., Maiorka A. Effect of conditioning temperature and retention time on pellet quality, ileal digestibility, and growth performance of broiler chickens. Livestock Science. 2020;240:104110. DOI: https://doi.org/10.1016/j.livsci.2020.104110Picchio R., Latterini F., Venanzi R., Stefanoni W., Suardi A., Tocci D., Pari L. Pellet production from woody and non-woody feedstocks: A review on biomass quality evaluation. Energies. 2020;13(11):2937. DOI: https://doi.org/10.3390/en13112937Picchio R., Latterini F., Venanzi R., Stefanoni W., Suardi A., Tocci D., Pari L. Pellet production from woody and non-woody feedstocks: A review on biomass quality evaluation. Energies. 2020;13(11):2937. DOI: https://doi.org/10.3390/en13112937Благов Д. А., Митрофанов С. В., Панферов Н. С., Тетерин В. С., Пестряков Е. В. Пресс-грануляторы, технические особенности, влияние гранулирования на качественные показатели корма. Кормление сельскохозяйственных животных и кормопроизводство. 2020;(9):57-66. DOI: https://doi.org/10.33920/sel-05-2009-06Blagov D. A., Mitrofanov S. V., Panferov N. S., Teterin V. S., Pestryakov E. V. Press granulators, technical features, influence of granulation on qualitative characteristics of feed. Kormlenie sel'skokhozyaystvennykh zhivotnykh i kormoproizvodstvo. 2020;(9):57-66. (In Russ.). DOI: https://doi.org/10.33920/sel-05-2009-06Agar D. A., Rudolfsson M., Kalen G., Campargue M., Perez D. D. S., Larsson S. H. A systematic study of ring-die pellet production from forest and agricultural biomass. Fuel Processing Technology. 2018;180:47-55. DOI: https://doi.org/10.1016/j.fuproc.2018.08.006Agar D. A., Rudolfsson M., Kalen G., Campargue M., Perez D. D. S., Larsson S. H. A systematic study of ring-die pellet production from forest and agricultural biomass. Fuel Processing Technology. 2018;180:47-55. DOI: https://doi.org/10.1016/j.fuproc.2018.08.006Crawford N. C., Ray A. E., Yancey N. A., Nagle N. Evaluating the pelletization of “pure” and blended lignocellulosic biomass feedstocks. Fuel Processing Technology. 2015;140:46-56. DOI: https://doi.org/10.1016/j.fuproc.2015.08.023Crawford N. C., Ray A. E., Yancey N. A., Nagle N. Evaluating the pelletization of “pure” and blended lignocellulosic biomass feedstocks. Fuel Processing Technology. 2015;140:46-56. DOI: https://doi.org/10.1016/j.fuproc.2015.08.023Whittaker C., Shield I. Factors affecting wood, energy grass and straw pellet durability – A review. Renewable and Sustainable Energy Reviews. 2017;71:1-11. DOI: https://doi.org/10.1016/j.rser.2016.12.119Whittaker C., Shield I. Factors affecting wood, energy grass and straw pellet durability – A review. Renewable and Sustainable Energy Reviews. 2017;71:1-11. DOI: https://doi.org/10.1016/j.rser.2016.12.119Faborode M. O., O’Callaghan J. R. Theoretical analysis of the compression of fibrous agricultural materials. Journal of Agricultural Engineering Research. 1986;35(3):175-191. DOI: https://doi.org/10.1016/S0021-8634(86)80055-5Faborode M. O., O’Callaghan J. R. Theoretical analysis of the compression of fibrous agricultural materials. Journal of Agricultural Engineering Research. 1986;35(3):175-191. DOI: https://doi.org/10.1016/S0021-8634(86)80055-5Mani S., Tabil L. G., Sokhansanj S. Evaluation of compaction equations applied to four biomass species. Canadian Biosystems Engineering. 2004;46(3):55-61. URL: https://library.csbe-scgab.ca/docs/journal/46/c0404.pdfMani S., Tabil L. G., Sokhansanj S. Evaluation of compaction equations applied to four biomass species. Canadian Biosystems Engineering. 2004;46(3):55-61. URL: https://library.csbe-scgab.ca/docs/journal/46/c0404.pdfAlakangas E., Paju P. Wood pellets in Finland – technology, economy, and market. OPET Report 5. Jyväskylä: VTT Processes, 2002. 85 p. URL: https://cris.vtt.fi/ws/files/52184787/wood_pellet_in_finland_compress.pdfAlakangas E., Paju P. Wood pellets in Finland – technology, economy, and market. OPET Report 5. Jyväskylä: VTT Processes, 2002. 85 p. URL: https://cris.vtt.fi/ws/files/52184787/wood_pellet_in_finland_compress.pdfJackson J., Turner A., Mark T., Montross M. Densification of biomass using a pilot scale flat ring roller pellet mill. Fuel Processing Technology. 2016;148:43-49. DOI: https://doi.org/10.1016/j.fuproc.2016.02.024Jackson J., Turner A., Mark T., Montross M. Densification of biomass using a pilot scale flat ring roller pellet mill. Fuel Processing Technology. 2016;148:43-49. DOI: https://doi.org/10.1016/j.fuproc.2016.02.024Nielsen N. P. K., Gardner D., Poulsen T., Felby C. Importance of temperature, moisture content, and species for the conversion process of wood residues into fuel pellets. Wood and Fiber Science. 2009;41(4):414-425. URL: https://wfs.swst.org/index.php/wfs/article/view/469/469Nielsen N. P. K., Gardner D., Poulsen T., Felby C. Importance of temperature, moisture content, and species for the conversion process of wood residues into fuel pellets. Wood and Fiber Science. 2009;41(4):414-425. URL: https://wfs.swst.org/index.php/wfs/article/view/469/469Кувшинов В. В., Муханов Н. В., Телегин И. А., Марченко С. А. Поведение системы «канал матрицыспрессованные монолиты» в процессе их нагрева. Аграрный вестник Верхневолжья. 2020;(4):85-90. DOI: https://doi.org/10.35523/2307-5872-2020-33-4-85-90Kuvshinov V. V., Mukhanov N. V., Telegin I. A., Marchenko S. A. Behavior of the "matrix channel -pressed monoliths" system during their heating. Agrarnyy vestnik Verkhnevolzh'ya = Agrarian Journal of Upper Volga Region. 2020;(4):85-90. (In Russ.). DOI: https://doi.org/10.35523/2307-5872-2020-33-4-85-90Serrano C., Monedero E., Lapuerta M., Portero H. Effect of moisture content, particle size and pine addition on quality parameters of barley straw pellets. Fuel Processing Technology. 2011;92(3):699-706. DOI: https://doi.org/10.1016/j.fuproc.2010.11.031Serrano C., Monedero E., Lapuerta M., Portero H. Effect of moisture content, particle size and pine addition on quality parameters of barley straw pellets. Fuel Processing Technology. 2011;92(3):699-706. DOI: https://doi.org/10.1016/j.fuproc.2010.11.031Mostafa M. E., Hu S., Wang Y., Su S., Fu X., Elsayed S. A., Xiang J. The significance of pelletization operating conditions: An analysis of physical and mechanical characteristics as well as energy consumption of biomass pellets. Renewable and Sustainable Energy Reviews. 2019;105:332-348. DOI: https://doi.org/10.1016/j.rser.2019.01.053Mostafa M. E., Hu S., Wang Y., Su S., Fu X., Elsayed S. A., Xiang J. The significance of pelletization operating conditions: An analysis of physical and mechanical characteristics as well as energy consumption of biomass pellets. Renewable and Sustainable Energy Reviews. 2019;105:332-348. DOI: https://doi.org/10.1016/j.rser.2019.01.053Tumuluru J. S. Effect of process variables on the density and durability of the pellets made from high moisture corn stover. Biosystems Engineering. 2014;119:44-57. DOI: https://doi.org/10.1016/j.biosystemseng.2013.11.012Tumuluru J. S. Effect of process variables on the density and durability of the pellets made from high moisture corn stover. Biosystems Engineering. 2014;119:44-57. DOI: https://doi.org/10.1016/j.biosystemseng.2013.11.012Safran B., Radmanovic K., Jug M., Lucic Beljo R., Lojen T., Risovic S. Influence of pressing temperature and additive on mechanical properties of wood pellets. Natural Resources, Green Technology & Sustainable Development. 2018;3:141-148. URL: https://www.sumins.hr/wp-content/uploads/2019/07/green3-proceedings.pdfSafran B., Radmanovic K., Jug M., Lucic Beljo R., Lojen T., Risovic S. Influence of pressing temperature and additive on mechanical properties of wood pellets. Natural Resources, Green Technology & Sustainable Development. 2018;3:141-148. URL: https://www.sumins.hr/wp-content/uploads/2019/07/green3-proceedings.pdfКошак Ж., Кошак А. Влияние состава комбикормов на удельную энергоемкость процесса гранулирования. Комбикорма. 2012;(2):63-64. Режим доступа: https://kombi-korma.ru/sites/default/files/2/2_12/02_2012_063-064.pdfKoshak Zh., Koshak A. Influence of feed composition on the specific energy intensity of the pelleting process. Kombikorma. 2012;(2):63-64. (In Russ.). URL: https://kombi-korma.ru/sites/default/files/2/2_12/02_2012_063-064.pdfКлименко А., Гущева-Митропольская А. Качество гранул: проблемы и предложения по их решению. Комбикорма. 2016;(7-8):40-42. Режим доступа: https://kombi-korma.ru/sites/default/files/2/7-8_16/07-08_2016_40-42.pdfKlimenko A., Gushcheva-Mitropolskaya A. Pellet quality: problems and solutions. Kombikorma. 2016;(7-8):40-42. (In Russ.). URL: https://kombi-korma.ru/sites/default/files/2/7-8_16/07-08_2016_40-42.pdfIvanov M. Feed pellet quality and productivity. Borregaard LignoTech, 2017. URL: https://vk.cc/chs8F1Ivanov M. Feed pellet quality and productivity. Borregaard LignoTech, 2017. URL: https://vk.cc/chs8F1Nielsen S. K., Mando M. Experimental and numerical investigation of die designs in biomass pelleting and the effect on layer formation in pellets. Biosystems Engineering. 2020;198:185-197. DOI: https://doi.org/10.1016/j.biosystemseng.2020.08.010Nielsen S. K., Mando M. Experimental and numerical investigation of die designs in biomass pelleting and the effect on layer formation in pellets. Biosystems Engineering. 2020;198:185-197. DOI: https://doi.org/10.1016/j.biosystemseng.2020.08.010Mediavilla I., Esteban L. S., Fernandez M. J. Optimisation of pelletisation conditions for poplar energy crop. Fuel Processing Technology. 2012;104:7-15. DOI: https://doi.org/10.1016/j.fuproc.2012.05.031Mediavilla I., Esteban L. S., Fernandez M. J. Optimisation of pelletisation conditions for poplar energy crop. Fuel Processing Technology. 2012;104:7-15. DOI: https://doi.org/10.1016/j.fuproc.2012.05.031Misljenovic N., Colovic R., Vukmirovic D., Brlek T., Bringas C. S. The effects of sugar beet molasses on wheat straw pelleting and pellet quality. A comparative study of pelleting by using a single pellet press and a pilot-scale pellet press. Fuel Processing Technology. 2016;144:220-229. DOI: https://doi.org/10.1016/j.fuproc.2016.01.001Misljenovic N., Colovic R., Vukmirovic D., Brlek T., Bringas C. S. The effects of sugar beet molasses on wheat straw pelleting and pellet quality. A comparative study of pelleting by using a single pellet press and a pilot-scale pellet press. Fuel Processing Technology. 2016;144:220-229. DOI: https://doi.org/10.1016/j.fuproc.2016.01.001Hu J., Lei T., Shen S., Zhang Q. Specific energy consumption regression and process parameters optimization in wet-briquetting of rice straws at normal temperature. BioResources. 2013;8(1):663-675. URL: https://vk.cc/cjosiFHu J., Lei T., Shen S., Zhang Q. Specific energy consumption regression and process parameters optimization in wet-briquetting of rice straws at normal temperature. BioResources. 2013;8(1):663-675. URL: https://vk.cc/cjosiFNielsen S. K., Mandø M., Rosenørn A. B. 1D Model for investigation of energy consumption and wear in die designs used for biomass pelleting. European Biomass Conference and Exhibition Proceedings. 2018;26:550-558. DOI: https://doi.org/10.5071/26thEUBCE2018-2CO.13.1Nielsen S. K., Mandø M., Rosenørn A. B. 1D Model for investigation of energy consumption and wear in die designs used for biomass pelleting. European Biomass Conference and Exhibition Proceedings. 2018;26:550-558. DOI: https://doi.org/10.5071/26thEUBCE2018-2CO.13.1Wu K., Shi S. J., Wang Y. L., Peng B. B. FEA simulation of extruding feed through die hole in pelleting process. Applied Mechanics and Materials. 2011;109:350-354. DOI: https://doi.org/10.4028/www.scientific.net/AMM.109.350Wu K., Shi S. J., Wang Y. L., Peng B. B. FEA simulation of extruding feed through die hole in pelleting process. Applied Mechanics and Materials. 2011;109:350-354. DOI: https://doi.org/10.4028/www.scientific.net/AMM.109.350Януков Н., Волков А., Лукина Д., Прохорова Л., Брыгин В. Повышение эффективности работы матричного пресс-гранулятора. Комбикорма. 2020;(2):43-45. DOI: https://doi.org/10.25741/2413-287X-2020-02-2-093Yanukov N., Volkov A., Lukina D., Prokhorova L., Brygin V. Improving the efficiency of the die pelletizer. Kombikorma. 2020;(2):43-45. (In Russ.). DOI: https://doi.org/10.25741/2413-287X-2020-02-2-093Thek G., Obernberger I. The Pellet Handbook: The production and thermal utilization of biomass pellets. London: Routledge, 2010. 592 p. DOI: https://doi.org/10.4324/9781849775328Thek G., Obernberger I. The Pellet Handbook: The production and thermal utilization of biomass pellets. London: Routledge, 2010. 592 p. DOI: https://doi.org/10.4324/9781849775328Monedero E., Portero H., Lapuerta M. Pellet blends of poplar and pine sawdust: Effects of material composition, additive, moisture content and compression die on pellet quality. Fuel Processing Technology. 2015;132:15-23. DOI: https://doi.org/10.1016/j.fuproc.2014.12.013Monedero E., Portero H., Lapuerta M. Pellet blends of poplar and pine sawdust: Effects of material composition, additive, moisture content and compression die on pellet quality. Fuel Processing Technology. 2015;132:15-23. DOI: https://doi.org/10.1016/j.fuproc.2014.12.013Stelte W., Clemons C., Holm J. K., Ahrenfeldt J., Henriksen U. B., Sanadi A. R. Fuel pellets from wheat straw: the effect of lignin glass transition and surface waxes on pelletizing properties. Bioenergy Research. 2012;5(2):450-458. DOI: https://doi.org/10.1007/s12155-011-9169-8Stelte W., Clemons C., Holm J. K., Ahrenfeldt J., Henriksen U. B., Sanadi A. R. Fuel pellets from wheat straw: the effect of lignin glass transition and surface waxes on pelletizing properties. Bioenergy Research. 2012;5(2):450-458. DOI: https://doi.org/10.1007/s12155-011-9169-8Adapa P., Tabil L., Schoenau G., Opoku A. Pelleting characteristics of selected biomass with and without steam explosion pretreatment. International Journal of Agricultural and Biological Engineering. 2010;3(3):62-79. DOI: https://doi.org/10.3965/j.issn.1934-6344.2010.03.062-079Adapa P., Tabil L., Schoenau G., Opoku A. Pelleting characteristics of selected biomass with and without steam explosion pretreatment. International Journal of Agricultural and Biological Engineering. 2010;3(3):62-79. DOI: https://doi.org/10.3965/j.issn.1934-6344.2010.03.062-079Theerarattananoon K., Xu F., Wilson J., Ballard R., Mckinney L., Staggenborg S., Vadlani P., Pei Z. J., Wang D. Physical properties of pellets made from sorghum stalk, corn stover, wheat straw, and big bluestem. Industrial Crops and Products. 2011;33(2):325-332. DOI: https://doi.org/10.1016/j.indcrop.2010.11.014Theerarattananoon K., Xu F., Wilson J., Ballard R., Mckinney L., Staggenborg S., Vadlani P., Pei Z. J., Wang D. Physical properties of pellets made from sorghum stalk, corn stover, wheat straw, and big bluestem. Industrial Crops and Products. 2011;33(2):325-332. DOI: https://doi.org/10.1016/j.indcrop.2010.11.014Puig-Arnavat M., Ahrenfeldt J., Henriksen U. B. Validation of a multiparameter model to investigate torrefied biomass pelletization behavior. Energy and Fuels. 2017;31(2):1644-1649. DOI: https://doi.org/10.1021/acs.energyfuels.6b02895Puig-Arnavat M., Ahrenfeldt J., Henriksen U. B. Validation of a multiparameter model to investigate torrefied biomass pelletization behavior. Energy and Fuels. 2017;31(2):1644-1649. DOI: https://doi.org/10.1021/acs.energyfuels.6b02895Holm J. K., Stelte W., Posselt D., Ahrenfeldt J., Henriksen U. B. Optimization of a multiparameter model for biomass pelletization to investigate temperature dependence and to facilitate fast testing of pelletization behavior. Energy and Fuels. 2011;25(8):3706-3711. DOI: https://doi.org/10.1021/ef2005628Holm J. K., Stelte W., Posselt D., Ahrenfeldt J., Henriksen U. B. Optimization of a multiparameter model for biomass pelletization to investigate temperature dependence and to facilitate fast testing of pelletization behavior. Energy and Fuels. 2011;25(8):3706-3711. DOI: https://doi.org/10.1021/ef2005628Kaliyan N., Vance Morey R. Factors affecting strength and durability of densified biomass products. Biomass and Bioenergy. 2009;33(3):337-359. DOI: https://doi.org/10.1016/j.biombioe.2008.08.005Kaliyan N., Vance Morey R. Factors affecting strength and durability of densified biomass products. Biomass and Bioenergy. 2009;33(3):337-359. DOI: https://doi.org/10.1016/j.biombioe.2008.08.005Shuijuan S., Kai W., Binbin P., Shuanhu W., Yu S. Mechanical model and FEA of ring die of three-roller pellet mill. In: 2010 International Conference on Mechanic Automation and Control Engineering. IEEE, 2010. pp. 76-80. DOI: https://doi.org/10.1109/MACE.2010.5535988Shuijuan S., Kai W., Binbin P., Shuanhu W., Yu S. Mechanical model and FEA of ring die of three-roller pellet mill. In: 2010 International Conference on Mechanic Automation and Control Engineering. IEEE, 2010. pp. 76-80. DOI: https://doi.org/10.1109/MACE.2010.5535988Holm J. K., Henriksen U. B., Hustad J. E., Sorensen L. H. Toward an understanding of controlling parameters in softwood and hard-wood pellets production. Energy and Fuels. 2006;20(6):2686-2694. DOI: https://doi.org/10.1021/ef0503360Holm J. K., Henriksen U. B., Hustad J. E., Sorensen L. H. Toward an understanding of controlling parameters in softwood and hard-wood pellets production. Energy and Fuels. 2006;20(6):2686-2694. DOI: https://doi.org/10.1021/ef0503360Xia X., Sun Y., Wu K., Jiang Q. Modeling of a straw ring-die briquetting process. BioResources. 2014;9(4):6316-6328. DOI: https://doi.org/10.15376/biores.9.4.6316-6328Xia X., Sun Y., Wu K., Jiang Q. Modeling of a straw ring-die briquetting process. BioResources. 2014;9(4):6316-6328. DOI: https://doi.org/10.15376/biores.9.4.6316-6328Полищук В. Ю., Панов Е. И., Василевская С. П. Определение влияния на энергоемкость гранулирования радиусов рабочих органов пресс-гранулятора. Тракторы и сельхозмашины. 2019;(6):86-92. DOI: https://doi.org/10.31992/0321-4443-2019-6-86-92Polishchuk V. Yu., Panov E. I., Vasilevskaya S. P. Determination of the effect on the energy intensity of granulation of the radii of the working bodies of the press granulator. Traktory i sel'khozmashiny. 2019;(6):86-92. (In Russ.). DOI: https://doi.org/10.31992/0321-4443-2019-6-86-92Wu K., Shi S., Ding W., Peng B., Sun Y. Influence of die speed on the energy consumption in the pelleting process. 2010 International Conference on Computing, Control and Industrial Engineering. IEEE, 2010. pp. 247-250. DOI: https://doi.org/10.1109/CCIE.2010.70Wu K., Shi S., Ding W., Peng B., Sun Y. Influence of die speed on the energy consumption in the pelleting process. 2010 International Conference on Computing, Control and Industrial Engineering. IEEE, 2010. pp. 247-250. DOI: https://doi.org/10.1109/CCIE.2010.70

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