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Use of bacterial cellulose and crosslinked cellulose nanofibers membranes for removal of oil from oil-in-water emulsions
Cellulose and Paper Department & Centre of Excellence for Advanced Sciences, National Research Centre.
Cellulose and Paper Department & Centre of Excellence for Advanced Sciences, National Research Centre.
Cellulose and Paper Department & Centre of Excellence for Advanced Sciences, National Research Centre.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-6247-5963
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2017 (English)In: Polymers, ISSN 2073-4360, E-ISSN 2073-4360, Vol. 9, no 9, 388Article in journal (Refereed) Published
Abstract [en]

Never-dried bacterial cellulose (BC) and crosslinked cellulose nanofibers (CNF) were used for the removal of oil from stabilized and non-stabilized oil-in-water emulsions with droplet sizes less than 1 µm. The CNF membranes were exchanged with isopropyl alcohol before drying. The microscopic structure of the prepared membranes was evaluated using scanning electron microscopy (SEM); the water flux and the rejection of oil were evaluated using a dead-end filtration cell. BC harvested after different incubation time periods (2 to 10 days) did not show a change in the width of the nanofibers, but only the thickness of the membranes was increased. Pure water flux was not affected as a result of increasing thicknesses of BC membranes harvested after 4–10 days while BC harvested after two days had significantly higher water flux than the others. BC showed a higher flux and efficiency in removing oil from oil emulsions than CNF membranes. Removal of oil by the different membranes from the non-stabilized oil emulsion was more efficient than from the stabilized one.

Place, publisher, year, edition, pages
MDPI AG , 2017. Vol. 9, no 9, 388
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-65492DOI: 10.3390/polym9090388Scopus ID: 2-s2.0-85028328963OAI: oai:DiVA.org:ltu-65492DiVA: diva2:1138409
Note

Validerad;2017;Nivå 2;2017-05-05 (andbra)

Available from: 2017-09-05 Created: 2017-09-05 Last updated: 2017-09-05Bibliographically approved

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