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- W2555954681 abstract "In this work algorithms of calculation of intra diffusive kinetics of process of extraction of the birch bark differing in difficult capillary and porous anisotropic structure are considered. Possibility of calculation of process of extraction of the extractive substances (ES) and betulin from birch bark at constant values of coefficient of internal diffusion is experimentally confirmed, dependencies of coefficients of internal diffusion on the birch bark sizes are established. The effective new way of allocation of betulin from birch bark with the use of microwave field allowing reducing at 10-15 times process duration in comparison with traditional methods of extraction is developed. Influence of key parameters on microwave extraction process is studied: type of solvent, concentration of ethyl alcohol, power consumption, the intensity of hashing and liquid module of the process. The empirical equation for the mathematical description of process is received and optimum values of parameters of allocation of betulin are defined: concentration of ethyl alcohol of 86%, duration of process is 6-7 min., liquid the module 1:20, power consumption of 16 kW· h/kg birch bark or 67 kW · h/kg betulin." @default.
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- W2555954681 date "2015-01-01" @default.
- W2555954681 modified "2023-09-27" @default.
- W2555954681 title "INDUSTRIAL BIRCH-BARK ALCOHOL-BASED EXTRACTION" @default.
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