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Session Number – 2793

Curricular Innovation in the Chemical Engineering Separation Process Course – Membrane Distillation Module – Materials and Processes

Manohar Nekkanti and Alan Fuchs

Chemical Engineering Division University of Nevada, Reno Reno, Nevada 89557, USA.

Introduction:

Membrane distillation (MD) is a novel process that is being investigated as a low cost, energy saving alternative as compared to conventional separation processes like distillation & reverse osmosis. It is believed that this process offers an educational opportunity for the undergraduate chemical engineering curriculum. MD is a thermally driven process in which a microporous hydrophobic membrane separates a warm solution from a cooler chamber containing either liquid or gas. The separation mechanism is based on vapor- liquid equilibrium. Since this is one of the newest membrane processes it has not yet been introduced into the undergraduate/graduate curriculum. No mention of membrane distillation appears in separations textbooks such as “Separation Process Principles” by Seader and Henley, “Transport Processes and Unit Operations” by C J Geankoplis, “Separation Processes” by C. Judson King, “Unit Operations in Chemical Engineering” by McCabe, W. L. Smith and P. Harriott and “Equilibrium Staged Separations” by Philip C Wankat. The solutions used in MD are preferably aqueous and sufficiently dilute to prevent wetting of the hydrophobic membrane. In the literature, effects Figure 1. Various models of membrane distillation. such as the use of various solvent and non-solvent “Proceedings of the 2002 American Society for Engineering Education Annual Conference & Exposition Copyright © 2002, American Society for Engineering Education”

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Nekkanti, M., & Fuchs, A. (2002, June), Curricular Innovation In The Chemical Engineering Separation Process Course Membrane Distillation Module Ials And Processes Paper presented at 2002 Annual Conference, Montreal, Canada. 10.18260/1-2--10937