Oil-Water Separation using Membranes Manufactured from Cellulose / Ionic Liquid Solutions

Dooli Kim, Sara Livazovic, Gheorghe Falca, Suzana Pereira Nunes

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


Membrane processes are currently essential for seawater desalination and their implementation in sustainable separations in the chemical industry is rapidly growing. The sustainability of the membrane manufacture itself has been however frequently questioned and needs to be improved. Ionic liquids are promising alternative solvent for membrane manufacture. We discuss general aspects of toxicity and recyclability compared to common organic solvents and take advantage of their unique capability of dissolution of polymers like cellulose, a natural and biodegradable polymer. Cellulose membranes were prepared from solutions in 1-ethyl-3-methylimidazolium acetate as flat-sheet and hollow fibers. The membranes performances were evaluated for oil and water separation, analyzing the influence of anionic, cationic and neutral surfactants added to emulsions with different oil content.
Original languageEnglish (US)
Pages (from-to)5649-5659
Number of pages11
JournalACS Sustainable Chemistry & Engineering
Issue number6
StatePublished - Nov 12 2018


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