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Designing of bacterial cellulose-based superhydrophilic/underwater superoleophobic membrane for oil/water separation.
- Source :
-
Carbohydrate polymers [Carbohydr Polym] 2021 Apr 01; Vol. 257, pp. 117611. Date of Electronic Publication: 2021 Jan 05. - Publication Year :
- 2021
-
Abstract
- The oil/water (o/w) separation is a global challenge because of the increasing water contamination by oil spill accidents, and oil-containing wastewater produced by food, textile, and petrochemical industries. In this study, we have developed bacterial cellulose (BC) based superhydrophilic/underwater superoleophobic (SUS) membrane for o/w separation. The membrane was designed through a facile method by blending BC nanofibers with silica microparticles (SiO <subscript>2</subscript> -MPs), which was further modified by bio-inspired polydopamine (PDA) coatings. The composite membrane exhibited SiO <subscript>2</subscript> -MPs dependent o/w separation with a high separation efficiency of >99.9 % and a high flux rate of ∼10,660 Lm <superscript>-2</superscript> h <superscript>-1</superscript> while applying a small negative pressure (0.3-0.5 bar). The membrane with different content of SiO <subscript>2</subscript> -MPs also showed the potential to separate oil-in-water emulsion with the highest oil rejection of 98.2 % and the highest flux rate of ∼1250 Lm <superscript>-2</superscript> h <superscript>-1</superscript> on an ultra-low pressure <0.1 bar. Moreover, the membrane showed antifouling properties, recyclability, and stability in harsh conditions.<br /> (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Subjects :
- Hydrogen-Ion Concentration
Hydrophobic and Hydrophilic Interactions
Indoles chemistry
Materials Testing
Membranes, Artificial
Nanofibers chemistry
Polymers chemistry
Reproducibility of Results
Silicon Dioxide chemistry
Spectroscopy, Fourier Transform Infrared
Water Purification methods
Bacteria metabolism
Cellulose chemistry
Oils chemistry
Wastewater chemistry
Water chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1879-1344
- Volume :
- 257
- Database :
- MEDLINE
- Journal :
- Carbohydrate polymers
- Publication Type :
- Academic Journal
- Accession number :
- 33541642
- Full Text :
- https://doi.org/10.1016/j.carbpol.2020.117611