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- W1969066162 abstract "Abstract The ultrasonic extraction of cottonseed with ethyl alcohol is studied. Several treating systems are evaluated with the seed in different positions in regard to the ultrasonic field. A calorimetric method was used for measuring the ultrasonic power to the treating vessels. The ultrasonic field had a frequency of 26 Kc/sec, and there was a power range from 0 to 2 watts/cm 2 . The temperature was varied between 25 and 75C for a set of runs, and a solvent flow rate of about 1 ml/sec was used for most runs. It appears that the temperature effect is the same for runs with and without ultrasonics. A capillary flow mechanism is discussed to explain the temperature effect. Only the extraction without ultrasonics could be predicted by the latter model at a given temperature level. Considerable improvement in the extraction rate was obtained when the ultrasonic pressure gradient was used parallel to the main solid liquid interface. A generalized empirical equation is presented, relating the rate of extraction to the calorimetric power to the extraction vessel, the total area normal to the ultrasonic field, and the seed loading for a particular geometry. By using Fick's law of diffusion and a simplified physical model, the data are also presented as an equation of the diffusion coefficient as a function of the calorimetrically measured ultrasonic power, the total area in the path of the ultrasonic field, and the seed loading." @default.
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- W1969066162 date "1967-10-01" @default.
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- W1969066162 title "Alcoholic extraction of oilseed with the aid of ultrasonics" @default.
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- W1969066162 doi "https://doi.org/10.1007/bf02901256" @default.
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