Nanobiotechnologies and chemical technologies 

Selection of optimal technological parameters for obtaining encapsulated organic-mineral fertilizers with nanoporous structure
Vakal S.V.1, Vakal V.S.1, Artyukhov A.E.2, Shkola V.Y.2, Yanovska G.O. 2
1 Scientific-Research Institute of Mineral Fertilizers and Pigments of the Sumy State University, 12, Kharkovskaya Str., Sumy, 40012, Ukraine
2 Sumy State University, Rymskogo-Korsakova str., 2, Sumy-40007, Ukraine. e-mail: yanovskaanna@gmail.com

Fig. 1. Сonstructive calculation of the   organic-mineral fertilizers obtaining process	
The creation of organic-mineral fertilizers with a developed porous structure requires a systematic approach to determining the optimal technological parameters for implementing the process. In addition, it is necessary to carry out an optimization calculation of the design of the main apparatus as part of the technological scheme - a disc granulator. The main design parameters that require the calculation and optimal selection of the size of the disc granulator are presented in fig. 1.
An important subject of study is the study of the effect of the composition of the organic shell and the binder on the characteristics of nanopores.
The selection of the optimal technological parameters for the production of organic-mineral fertilizers is carried out in such a way as to ensure the developed nanoporous structure of the granule shell and reliable attachment of the shell to the core. In this case, the boundary layer must also have nanoporous properties to ensure gradual penetration of moisture to the core during the dissolution of the organic shell.

Acknowledgement: Grant number 0120U102003 “Process of formation of the novel ecologically safe fertilizers with prolonged action based on the phosphorite deposits raw materials“.