Filtration Performance of Ultrathin Electrospun Cellulose Acetate Filters Doped with TiO2 and Activated Charcoal
| العنوان: | Filtration Performance of Ultrathin Electrospun Cellulose Acetate Filters Doped with TiO2 and Activated Charcoal |
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| المؤلفون: | Yilun Gao, Jinhan Mo, Alireza Afshari, Roberta Orlando, Peter Fojan |
| المصدر: | Orlando, R, Gao, Y, Fojan, P, Mo, J & Afshari, A 2021, ' Filtration performance of ultrathin electrospun cellulose acetate filters doped with TiO 2 and activated charcoal ', Buildings, vol. 11, no. 11, 557 . https://doi.org/10.3390/buildings11110557 Buildings, Vol 11, Iss 557, p 557 (2021) Buildings Volume 11 Issue 11 |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, Cellulose acetate, Air filters, Particle pollution, law.invention, air filters, chemistry.chemical_compound, law, Architecture, activated charcoal, electrospinning, Filtration, Civil and Structural Engineering, Air filter, cellulose acetate, Building construction, Electrospinning, titanium dioxide, technology, industry, and agriculture, Building and Construction, Filter (aquarium), chemistry, Chemical engineering, Activated charcoal, particle pollution, Titanium dioxide, Particle, TH1-9745 |
| الوصف: | Air filters are crucial components of a building ventilation system that contribute to improving indoor air quality, but they are typically associated with relatively high pressure drops. The purpose of the study is to evaluate the effect of additives on ultrathin electrospun filters, the pressure drop, and the particle removal efficiency of uniformly charged particles. The fibres were electrospun under optimised conditions that resulted in a fast-fabricating process due to the properties of the cellulose acetate solution. Different ultrathin electrospun fibre filters based on cellulose acetate (CA) were fabricated: a pure CA electrospun fibre filter, two filters based on CA fibres separately doped with activated charcoal (AC) and titanium dioxide (TiO2), respectively, and a composite filter where the two additives, AC and TiO2, were embedded between two CA fibres layers. The ultrathin filters exhibited a low pressure drop of between 63.0 and 63.8 Pa at a face velocity of 0.8 m s−1. The filtration performance of uniformly charged particles showed a removal efficiency above 70% for particle sizes between 0.3 and 0.5 μm for all filters, rising above 90% for larger particles between 1 and 10 μm, which translates to the average sizes of pollens and other allergenic contaminant particles. Due to the positive impact on the fibre morphology caused by the additives, the composite filter showed the highest filtration performance among the produced filters, reaching 82.3% removal efficiency towards smaller particles and a removal of up to 100% for particle sizes between 5 and 10 μm. Furthermore, cellulose acetate itself is not a source of microparticles and is fully biodegradable compared to other polymers commonly used for filters. These ultrathin electrospun filters are expected to be practical in applications for better building environments. |
| وصف الملف: | application/pdf |
| تدمد: | 2075-5309 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0f2a250fdad49e0e9b985951bc3e5ab https://doi.org/10.3390/buildings11110557 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....f0f2a250fdad49e0e9b985951bc3e5ab |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20755309 |
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