Faculty Advisor

Timko, Michael T.

Abstract

This project examines the extraction efficiency of n-butanol, isobutanol, n-pentanol, and n-hexanol from aqueous solutions using supercritical CO2. The effect of varying scCO2 flow rates, initial alcohol concentration, and alcohol chain length on extraction efficiency was determined. Low scCO2 flow rates, high initial alcohol concentration, and longer alcohol chain length represented the most efficient extraction conditions. Overall mass transfer coefficients for each condition were estimated using a two-film mass transfer model. Additionally, the partition coefficient for each condition was calculated. Based on these findings, it was determined that extraction runs of longer chain alcohols at low scCO2 flow rates are more likely to be equilibrium limited.

Publisher

Worcester Polytechnic Institute

Date Accepted

March 2017

Major

Chemical Engineering

Project Type

Major Qualifying Project

Accessibility

Unrestricted

Advisor Department

Chemical Engineering

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