Title: Overcoming any configuration limitation: an alternative operation mode for pervaporation and vapour permeation
Authors: Genduso, Giuseppe ×
Luis, Patricia
Van der Bruggen, Bart #
Issue Date: 5-Feb-2015
Publisher: Published for the Society of Chemical Industry by Blackwell Scientific Publications
Series Title: Journal of Chemical Technology and Biotechnology vol:91 issue:4 pages:948-957
Abstract: BACKGROUND: Membranes are the core and the main limitation of pervaporation. For example, in certain cases (more often for organic-organic mixtures) a pure product is not attainable as permeate of a single stage and a series of membrane stages spaced by a condenser is required, making the process economically unacceptable.
RESULTS: In this work it is discussed the use of an alternative approach by exploring the multi-stage-batch-pervaporation (MSBP) unit operation. Here, the permeate obtained after each batch-stage is recycled back to the feed tank in order to increase the permeate product purity in a following stage. The separation of methanol-methyl acetate mixtures was chosen as a case study.
Simulations demonstrate how a multi-stage-batch-pervaporation unit is able to meet product purity requirements, by varying the stage-termination condition and the number of stages, employing a single membrane-module and a single condenser.
Moreover, a new way to visualize pervaporation separation performance of different membranes is proposed, to be used in replacement of the pervaporation separation index (PSI) analysis.
CONCLUSION: Being very flexible, the multi-stage-batch-pervaporation unit operation could be of benefit for all small batch productions, even when using medium-low performance membranes. Fractions of continuous productions could also be suitable for multi-stage-batch-pervaporation systems.
ISSN: 0268-2575
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Process Engineering for Sustainable Systems Section
× corresponding author
# (joint) last author

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