Electrostatic Transparent Air Filter Membranes Composed of Metallized Microfibers for Particulate Removal

2019 ◽  
Vol 11 (29) ◽  
pp. 26323-26332 ◽  
Author(s):  
Min-Woo Kim ◽  
Seongpil An ◽  
Hyunjun Seok ◽  
Sam S. Yoon ◽  
Alexander L. Yarin
Keyword(s):  
Air Filter ◽  
Particulate Removal

VELOCITY DISTRIBUTION EFFECTS IN AIR FILTER TESTING

2001 ◽  
Vol 19 (1) ◽  
pp. 1-21 ◽  
Author(s):  
FRANK CHAMBERS ◽  
ABDEL AL-SARKHI ◽  
SHENGHONG YAO
Keyword(s):  
Velocity Distribution ◽  
Air Filter

Clogging in Irrigation Systems Reusing Pond Effluents and its Prevention

1987 ◽  
Vol 19 (12) ◽  
pp. 323-328 ◽  
Author(s):  
A. Adin
Keyword(s):  
Size Range ◽  
Small Scale ◽  
Main Obstacle ◽  
Reservoir Systems ◽  
Deep Reservoir ◽  
Particulate Removal ◽  
Oxidation Ponds ◽  
Surface Filtration ◽  
Granular Filtration ◽  
Low Rate

The clogging of emitters, orifices or laterals has turned out to be the main obstacle for further use of low rate applicators in wastewater irrigation. Granular filtration and screen filtration were studied and compared for particulate removal using small-scale pilot experiments. The removal ratio of particles larger than 10 µm in direct granular filtration was relatively large while smaller particles showed little removal. Particles in the 10-60µm size range were removed by 40–50 percent in depth and by 80 percent when surface filtration prevailed. Screen filters removed only 1–2 percent of the material but this was sufficient to cause their clogging. A release of particles from the screen into the effluent was observed, resulting in greater number of larger particles and thus greater clogging potential down the irrigation line. Deep-bed granular coarse media filters may serve for the control of particle size in effluents of oxidation ponds - deep reservoir systems while the conventional strainers are less recommended for this purpose.

scholarly journals Air filtration improvement of konjac glucomannan-based aerogel air filters through physical structure design

2021 ◽  
Author(s):  
Hong Qian ◽  
Ying Fang ◽  
Kao Wu ◽  
Hao Wang ◽  
Bin Li ◽  
...  
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Surface Area ◽  
Physical Structure ◽  
Structure Design ◽  
Air Filtration ◽  
Air Filters ◽  
Air Filter ◽  
Purification Time

Abstract This study presents two methods to improve the air filtration performance of konjac glucomannan (KGM)-based aerogel air filters through physical structure design by changing the pore-size distribution and the surface area, using an air purifier. Results indicated that KGM-based aerogels had a comparable filtration effect with the commercial air filter with a longer purification time. This purification time could be shortened by over 50%, by changing the pore-size distribution from large size to small size or increase the surface area with the fold structure. This should boost the development of polysaccharide-based aerogel used as the air filter.

Synthesis of CTAB-Functionalized Large-Scale Nanofibers Air Filter Media for Efficient PM2.5 Capture Capacity with Low Airflow Resistance

2021 ◽  
Vol 3 (2) ◽  
pp. 937-948
Author(s):  
Agasthiyaraj Lakshmanan ◽  
Deepak S. Gavali ◽  
Ranjit Thapa ◽  
Debabrata Sarkar
Keyword(s):  
Large Scale ◽  
Filter Media ◽  
Airflow Resistance ◽  
Air Filter ◽  
Capture Capacity

scholarly journals Eco-Friendly Poly(Vinyl Alcohol) Nanofiber-Based Air Filter for Effectively Capturing Particulate Matter

2021 ◽  
Vol 11 (9) ◽  
pp. 3831
Author(s):  
Han-Jung Kim ◽  
Dong-In Choi ◽  
Sang-Keun Sung ◽  
Su-Han Lee ◽  
Sang-Jin Kim ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Quality Factor ◽  
Vinyl Alcohol ◽  
Nonwoven Fabric ◽  
Poly Vinyl Alcohol ◽  
Contamination Level ◽  
Plastic Pollution ◽  
Air Filters ◽  
Air Filter ◽  
Filter Surface

Due to the increasing use of polypropylene-based nonwoven dust masks and air filters, environmental problems that occur due to the plastic pollution resulting from the disposal of these materials have also increased. Hence, an eco-friendly air filter based on PVA nanofibers (NFs) was fabricated by electrospinning on a nonwoven fabric, and its performance was evaluated as a filter capable of blocking or capturing particulate matter. The quality factor of the optimized PVA NF-based air filter was found to be 0.010606 Pa−1, which is lower than that of a HEPA filter (0.015394 Pa−1), but higher than that of a cabin air filter (0.010517 Pa−1) and a dust mask (0.009102 Pa−1). The contamination level of the PVA NF-based filter was analyzed by optical and structural analyses of the filter surface. Finally, the filter was soaked in water to selectively remove the contaminated PVA NF layer, and the remaining nonwoven fabric was able to be reused to make the filter.

scholarly journals Co-existing “spear-and-shield” air filter: anchoring proteinaceous pathogen and self-sterilized nanocoating for combating viral pandemic

2021 ◽  
pp. 130763
Author(s):  
Daheui Choi ◽  
Moonhyun Choi ◽  
Hyejoong Jeong ◽  
Jiwoong Heo ◽  
Taihyun Kim ◽  
...  
Keyword(s):  
Air Filter
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