Journal
MEMBRANES
Volume 12, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/membranes12020110
Keywords
polyvinylidene difluoride; zinc oxide nanoparticles; antibacterial; biofouling; anti-fouling membrane
Categories
Funding
- Ministry of Education Malaysia under the Malaysia Research University Network (MRUN) Grant [R.J130000.7809.4L867]
- Higher Institution Centre of Excellence Scheme [R.J090301.7809.4J430, Q.J130000.2409.08G34]
- Collaborative Research Grant (CRG) [R.J130000.7351.4B418]
- Professional Development Research University (PDRU) Grant
- JICA Technical Cooperation Project for ASEAN University Network/Southeast Asia Engineering Education Development Network (JICA Project for AUN/SEED-Net) via the Collaborative Education Program for Water and Wastewater Treatment Engineering Research Consort [R.J130000.7309.4B647]
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The study fabricated antibacterial hollow fiber membranes with zinc oxide nanoparticles, improving membrane anti-biofouling characteristics and achieving good pure water flux and protein rejection rate.
The addition of antibacterial material to hollow fiber membranes improves the membrane anti-biofouling characteristics. Antibacterial membranes were fabricated in this study to improve membrane function while also extending membrane lifetime. Neat polyvinylidene difluoride (PVDF) and PVDF hollow fiber membrane with the incorporation of antibacterial agent zinc oxide (ZnO) nanoparticles with various loading (2.5-7.5 wt.%) were fabricated by using dry/wet spinning method. The membrane structure, particle distribution, functional group, hydrophilicity, and pore size of each membrane were all assessed. The result shows that all ZnO/PVDF hollow fiber membranes have the asymmetric structure with even dispersion of ZnO nanoparticles throughout the membranes. The results showed that increased ZnO loadings considerably improved membrane hydrophilicity, and average pore size, in addition to good performance of pure water flux. Antibacterial testing shows that ZnO incorporated in the membrane matrix and membrane surfaces prevents bacteria that cause biofouling from adhering to the membrane. ZnO/PVDF membrane recorded excellent bovine serum albumin (BSA) rejection at 93.4% +/- 0.4 with flux recovery rate at 70.9% +/- 2.1. These results suggest that antibacterial ZnO/PVDF hollow fiber membranes are promising in relation to reducing biofouling for various water and wastewater treatment.
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