THE DETERMINATION OF KINETIC REGULARITIES OF SEPARATION OF WATER-EMULSION SPINACH SUSPENSION IN THE FIELD OF GRAVITATIONAL AND CENTRIFUGAL FORCES

Chlorophyll is a green plant pigment that is highly soluble in fats. This pigment substance, called the food dye chlorophyll and related to food premixes, is obtained by various physicochemical methods from raw materials, usually of plant origin. This food coloring is allowed in almost ail countries of the world and is considered harmless to health. In known methods for producing chlorophyll, preparation of plant material that is inefficient from the point of view of energy conservation is used for extraction by thermal drying, therefore, it is proposed to remove part of the free moisture from the crushed material by mechanical means. To solve the problem of the most complete extraction of chlorophyll from crushed spinach leaves, it is advisable to subject them to preliminary short-term soaking in water I organic reagent emulsion under ultrasonic treatment, and then remove part of the moisture, for example, by filtering centrifugation. After implementing the process of mechanical separation of the emulsion from the crushed spinach leaves and their extraction, the obtained precipitate having reduced moisture is a prepared material for extracting chlorophyll from it. To rationalize the filtration process, it is necessary to evaluate the structural and mechanical properties of the deposited materials in order to determine the sediment resistance, the choice of material and the resistance of the filtering partition depending on the driving force of the process by solving the kinetic differential filtration equation. This article discusses an important stage in the preparation of plant materials for the extraction of chlorophyll, namely, the mechanical removal of moisture from a precipitate consisting of finely ground spinach leaves, which is formed as a result of partial separation of the emulsion after the soaking step. Using experimental data and the dependence on the speed of rotation of the working body of the centrifuge, after a series of experiments, generalized equations were obtained for calculat- ing the specific resistance of the sediment depending on the angular velocity or the corresponding pressure drop for use in engineering calculations of filtering centrifuges.

spinach, chlorophyll, filtration rate, kinetics, spin, sludge resistance, centrifugation

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