Author(s)

Pavlo Kostetskyy

Date Approved

1-21-2012

Document Type

Thesis

Degree Name

M.S. Engineering

Department

Chemical Engineering

College

Henry M. Rowan College of Engineering

First Advisor

Hesketh, Robert

Subject(s)

Algal biofuels;Membranes (Technology);Mass transfer

Disciplines

Chemical Engineering

Abstract

Studies on absorption of CO2 into an aqueous solution using hydrophobic microporous hollow fiber membranes (HFM's) were performed. The use of HFM's for CO2 transfer could significantly improve the biomass growth rate in a photobioreactor for algal biofuel production. The membrane modules were operated in a sealed-end, parallel flow configuration. Several modules were constructed that ranged in interfacial surface area from 466 to 1397 m2/m3. The mass transfer coefficients were calculated based on a model of the system that included a prediction of the internal axial gas concentrations within the fiber lumen. This model was validated by measuring bulk gas velocity within fiber lumen. A trend of increasing mass transfer coefficients with internal pressure was observed. A correlation for predicting this effect was developed.

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