Dissemin is shutting down on January 1st, 2025

Published in

Elsevier, Journal of Supercritical Fluids, (102), p. 115-122

DOI: 10.1016/j.supflu.2015.04.011

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Cleaning of microfiltration membranes from industrial contaminants using "greener" alternatives in a continuous mode

This paper is available in a repository.
This paper is available in a repository.

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Abstract

This work presents a sufficient cleaning of microfiltration membranes from industrial contaminants (oils) using supercritical fluids as alternative to industrial use of organic solvents used near their high boiling points. Supercritical carbon dioxide either as pure or with an insignificant addition of “greener” solvents such as ethyl alcohol or isopropyl alcohol were applied in this study. The cleaning process was investigated in a high pressure system with a continuous solvent flow and solvent recirculation. The effect of system pressure, temperature, solvent flow rate, solvent composition, cleaning time and type of the contaminant on cleaning efficiency was analysed. Powerful, “greener” solvents combined with CO2 gave satisfactory results in removing oils from membranes allowing to increase the process rate and cleaning efficiency, as well as reduce energy consumption of the process.