Ven1401007 - 1 VEN 140-Spring 2010 Distilled Beverage Technology The Volatility of Secondary Products Roger Boulton 3154 RMI North

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Unformatted text preview: 1 VEN 140 -Spring 2010 Distilled Beverage Technology The Volatility of Secondary Products Roger Boulton 3154 RMI North rbboulton@ucdavis.edu Outline • Trace Component Volatility • K Values • Class of Volatiles • Effect of Ethanol • Significance of K=1 • Influence of Ethanol Concentration on order of Elution, and Position in Columns 2 Duclaux’s Equation The one of the earliest attempts to describe the volatility of minor components in water and ethanol water mixtures is the work of Duclaux (1895). ya = C * xa . yb (xa + xb) where ya and yb, xa and xb represent the volume per cent of the alcohol and water in the vapor and liquid phases, respectively. The value of C varies for dilute solutions of the alcohols from 10.9 for methanol to 50 for isoamyl alcohol, and 61 for capryl alcohol Sorel’s Equation Sorel (1892, 1894) performed distillations of ethanol water mixtures in a small copper retort still. After collecting 40 equal fractions he developed plots of the volume remaining, V, versus the concentration of the...
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This note was uploaded on 09/29/2010 for the course VEN 91866 taught by Professor Davidblock during the Spring '09 term at UC Davis.

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Ven1401007 - 1 VEN 140-Spring 2010 Distilled Beverage Technology The Volatility of Secondary Products Roger Boulton 3154 RMI North

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