Performance of spouted bed on drying of foliar fertilizer: analysis of yield and powder retention


  • Ana Carolina Ribeiro Stoppe
  • Mário Sérgio da Luz Universidade Federal do Triângulo Mineiro - UFTM
  • José Luiz Vieira Neto Universidade Federal do Triângulo Mineiro - UFTM
  • KASSIA GRACIELE DOS SANTOS Federal University of Triângulo Mineiro



Foliar nutrition, Spouting, Microgranulation, Agroindustry


Foliar fertilization is one of the most important management techniques used to improve crop productivity and quality. To increase the efficiency of fertilization, the fertilizer must be highly soluble. The drying of paste and solutions in spouted bed can change the powder structure, making it more soluble. However, depending on the operational conditions, the powder yield produced in this operation may be low. As such, the goal of this research was to investigate the impact of operational conditions on powder yield and powder losses caused by adhesion on the walls of the bed and cyclone, on particle surface, on the exhaust tube, filter, and filter overflow. To accomplish this, a 23factorial design was used. The results of powder yield (between 2.3 and 26.6%.) were like those obtained in other spouted bed applications, but lower when compared to spray-dryer. The higher powder retention occurred on the surface of inert particle and at the bed wall. A high level of instability was observed during spouting, which may have increased the powder adherence at the equipment's walls. The powder obtained after drying was solubilized about 5.9 times fast than the original fertilizer, demonstrating that the technique is promising if the bed stability is maintained.

Biografia do Autor

Ana Carolina Ribeiro Stoppe

Master's in Technological Innovation, Federal University of Triângulo Mineiro, Uberaba-MG, Brazil.

Mário Sérgio da Luz, Universidade Federal do Triângulo Mineiro - UFTM

Professor of the Professional Master's Program in Technological Innovation, Universidade Federal do Triângulo Mineiro, Uberaba-MG, Brazil.

José Luiz Vieira Neto, Universidade Federal do Triângulo Mineiro - UFTM

Professor of the Undergraduate Course in Chemical Engineering, Federal University of Triângulo Mineiro, Uberaba-MG, Brazil.

KASSIA GRACIELE DOS SANTOS, Federal University of Triângulo Mineiro

Possui graduação (2006), mestrado (2008) e doutorado (2011) em Eng. Química pela Universidade Federal de Uberlândia - UFU. Foi pesquisadora bolsista de Pós-Doutorado PNPD/Capes (2011 a 2013) atuando UFU. Atualmente é Professora no curso de Engenharia Química na Universidade Federal do Triângulo Mineiro - UFTM. Tem experiência na área de Engenharia Química, atuando principalmente nos seguintes temas: secagem de resíduos, leito de jorro, pirólise de biomassa, fluidodinâmica computacional (CFD), escoamento multifásico granular, clarificação de lecitina de soja, energias renováveis. Ganhadora do Prêmio Capes de Tese de Doutorado 2012, da área de Engenharias II.


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Como Citar

Stoppe, A. C. R., Luz, M. S. da, Vieira Neto, J. L., & SANTOS, K. G. dos. (2023). Performance of spouted bed on drying of foliar fertilizer: analysis of yield and powder retention. Revista Brasileira De Ciência, Tecnologia E Inovação, 7(2), 39–53.