Oil extraction from the sunflower seeds, mechanism and kinetics of the process

Mass Transfer in the Solid-Liquid System: Mechanism and Kinetics of the Extraction Process

“…3). Such dependence, as shown by experimental studies conducted on many objects of mineral raw materials, does exist [1][2][3], which indicates a satisfactory alignment of the theory with practice. It should be noted that the kinetic dependences shown in Figs.…”

“…To establish the mechanism of the slowest stage of the extraction process and to experimentally determine the diffusion coefficients, we used the equation obtained by the authors in [2,5]…”

“…Among these mechanisms of the extraction processes, there is no external diffusion mechanism, since for the particles in the form of a sphere Bi >> 1 [2,5] and the condition Bi << 1 is not realized.…”

“…Mass exchange processes in the solid-liquid system are associated with the extraction of the target components from mineral (uranium, gold, aluminum) and vegetable (oil, target components) raw materials and are widely used in various industries, such as hydrometallurgical, chemical, food, pharmaceutical and others [1][2][3][4][5][6][7][8][9][10][12][13][14][15][16][17][18][19]. A characteristic feature of the target components removal from porous structures by traditional methods is low degree of extraction: 70-72 % in hydrometallurgy, 30-80 % in food industry, 35-50 % in pharmaceutical industry.…”

“…The influence of the raw material dispersion in the process of extraction on the kinetics of the process is shown in Figs. 6 and 7 when extracting oil from amaranth seed and amaranth hybrid [2,8,9] at different temperatures. Similar dependencies were obtained for extracting the target components from mineral raw materials (sulfur from ore).…”