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

Krzysztof Michałek, Jan Krzysztoforski, Marek Henczka, Manuel Nunes Da Ponte, Ewa Bogel-Lukasik

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number3300
Pages (from-to)115-122
Number of pages8
JournalJournal of Supercritical Fluids
Volume102
DOIs
Publication statusPublished - 2015

Keywords

  • "Greener" solvents
  • Cleaning
  • Extraction
  • Separation
  • Supercritical carbon dioxide

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