Designing of bacterial cellulose-based superhydrophilic/underwater superoleophobic membrane for oil/water separation
| Autor: | Xue-Qing Zhao, Yun-Xia Duan, Cheng Zhong, Shiru Jia, Xiang-Jun Zhao, Fazli Wahid |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Indoles Polymers and Plastics Polymers Nanofibers 02 engineering and technology Wastewater 010402 general chemistry 01 natural sciences Water Purification chemistry.chemical_compound Superhydrophilicity Materials Testing Spectroscopy Fourier Transform Infrared Materials Chemistry Underwater Cellulose Bacteria Organic Chemistry Reproducibility of Results Water Membranes Artificial Hydrogen-Ion Concentration 021001 nanoscience & nanotechnology Silicon Dioxide 0104 chemical sciences Membrane Petrochemical Chemical engineering chemistry Bacterial cellulose Nanofiber Emulsion 0210 nano-technology Hydrophobic and Hydrophilic Interactions Oils |
| Zdroj: | Carbohydrate polymers. 257 |
| ISSN: | 1879-1344 |
| Popis: | 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 (SiO2-MPs), which was further modified by bio-inspired polydopamine (PDA) coatings. The composite membrane exhibited SiO2-MPs dependent o/w separation with a high separation efficiency of >99.9 % and a high flux rate of ∼10,660 Lm−2 h-1 while applying a small negative pressure (0.3−0.5 bar). The membrane with different content of SiO2-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−2 h-1 on an ultra-low pressure |
| Databáze: | OpenAIRE |
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